1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -passes=instcombine -S | FileCheck %s
4 target datalayout = "e-p:64:64-p1:16:16-p2:32:32:32-p3:64:64:64-f16:32"
6 %intstruct = type { i32 }
7 %pair = type { i32, i32 }
8 %struct.B = type { double }
9 %struct.A = type { %struct.B, i32, i32 }
10 %struct.C = type { [7 x i8] }
13 @Global = external global [10 x i8]
14 @Global_as1 = external addrspace(1) global [10 x i8]
16 declare void @use(ptr)
17 declare void @use.i64(i64)
19 ; Test noop elimination
20 define ptr @test1(ptr %I) {
21 ; CHECK-LABEL: @test1(
22 ; CHECK-NEXT: ret ptr [[I:%.*]]
27 define ptr addrspace(1) @test1_as1(ptr addrspace(1) %I) {
28 ; CHECK-LABEL: @test1_as1(
29 ; CHECK-NEXT: ret ptr addrspace(1) [[I:%.*]]
31 ret ptr addrspace(1) %I
34 ; Test noop elimination
35 define ptr @test2(ptr %I) {
36 ; CHECK-LABEL: @test2(
37 ; CHECK-NEXT: ret ptr [[I:%.*]]
39 %A = getelementptr i32, ptr %I
43 ; Test that two array indexing geps fold
44 define ptr @test3(ptr %I) {
45 ; CHECK-LABEL: @test3(
46 ; CHECK-NEXT: [[B:%.*]] = getelementptr i8, ptr [[I:%.*]], i64 84
47 ; CHECK-NEXT: ret ptr [[B]]
49 %A = getelementptr i32, ptr %I, i64 17
50 %B = getelementptr i32, ptr %A, i64 4
54 ; Test that two getelementptr insts fold
55 define ptr @test4(ptr %I) {
56 ; CHECK-LABEL: @test4(
57 ; CHECK-NEXT: [[A:%.*]] = getelementptr i8, ptr [[I:%.*]], i64 4
58 ; CHECK-NEXT: ret ptr [[A]]
60 %A = getelementptr { i32 }, ptr %I, i64 1
64 define void @test5(i8 %B) {
65 ; This should be turned into a constexpr instead of being an instruction
66 ; CHECK-LABEL: @test5(
67 ; CHECK-NEXT: store i8 [[B:%.*]], ptr getelementptr inbounds (i8, ptr @Global, i64 4), align 1
68 ; CHECK-NEXT: ret void
70 %A = getelementptr [10 x i8], ptr @Global, i64 0, i64 4
75 define void @test5_as1(i8 %B) {
76 ; This should be turned into a constexpr instead of being an instruction
77 ; CHECK-LABEL: @test5_as1(
78 ; CHECK-NEXT: store i8 [[B:%.*]], ptr addrspace(1) getelementptr inbounds (i8, ptr addrspace(1) @Global_as1, i16 4), align 1
79 ; CHECK-NEXT: ret void
81 %A = getelementptr [10 x i8], ptr addrspace(1) @Global_as1, i16 0, i16 4
82 store i8 %B, ptr addrspace(1) %A
86 %as1_ptr_struct = type { ptr addrspace(1) }
87 %as2_ptr_struct = type { ptr addrspace(2) }
89 @global_as2 = addrspace(2) global i32 zeroinitializer
90 @global_as1_as2_ptr = addrspace(1) global %as2_ptr_struct { ptr addrspace(2) @global_as2 }
92 ; This should be turned into a constexpr instead of being an instruction
93 define void @test_evaluate_gep_nested_as_ptrs(ptr addrspace(2) %B) {
94 ; CHECK-LABEL: @test_evaluate_gep_nested_as_ptrs(
95 ; CHECK-NEXT: store ptr addrspace(2) [[B:%.*]], ptr addrspace(1) @global_as1_as2_ptr, align 4
96 ; CHECK-NEXT: ret void
98 store ptr addrspace(2) %B, ptr addrspace(1) @global_as1_as2_ptr
102 @arst = addrspace(1) global [4 x ptr addrspace(2)] zeroinitializer
104 define void @test_evaluate_gep_as_ptrs_array(ptr addrspace(2) %B) {
105 ; CHECK-LABEL: @test_evaluate_gep_as_ptrs_array(
106 ; CHECK-NEXT: store ptr addrspace(2) [[B:%.*]], ptr addrspace(1) getelementptr inbounds (i8, ptr addrspace(1) @arst, i16 8), align 4
107 ; CHECK-NEXT: ret void
110 %A = getelementptr [4 x ptr addrspace(2)], ptr addrspace(1) @arst, i16 0, i16 2
111 store ptr addrspace(2) %B, ptr addrspace(1) %A
115 ; This should be turned into a constexpr instead of being an instruction
116 define void @test_overaligned_vec(i8 %B) {
117 ; CHECK-LABEL: @test_overaligned_vec(
118 ; CHECK-NEXT: store i8 [[B:%.*]], ptr getelementptr inbounds (i8, ptr @Global, i64 2), align 1
119 ; CHECK-NEXT: ret void
121 %A = getelementptr <2 x half>, ptr @Global, i64 0, i64 1
126 define ptr @test7(ptr %I, i64 %C, i64 %D) {
127 ; CHECK-LABEL: @test7(
128 ; CHECK-NEXT: [[A:%.*]] = getelementptr i32, ptr [[I:%.*]], i64 [[C:%.*]]
129 ; CHECK-NEXT: [[B:%.*]] = getelementptr i32, ptr [[A]], i64 [[D:%.*]]
130 ; CHECK-NEXT: ret ptr [[B]]
132 %A = getelementptr i32, ptr %I, i64 %C
133 %B = getelementptr i32, ptr %A, i64 %D
137 define ptr @test8(ptr %X) {
138 ;; Fold into the cast.
139 ; CHECK-LABEL: @test8(
140 ; CHECK-NEXT: ret ptr [[X:%.*]]
145 define i32 @test9() {
146 ; CHECK-LABEL: @test9(
147 ; CHECK-NEXT: ret i32 8
149 %A = getelementptr { i32, double }, ptr null, i32 0, i32 1
150 %B = ptrtoint ptr %A to i32
154 define i1 @test10(ptr %x, ptr %y) {
155 ; CHECK-LABEL: @test10(
156 ; CHECK-NEXT: [[T4:%.*]] = icmp eq ptr [[X:%.*]], [[Y:%.*]]
157 ; CHECK-NEXT: ret i1 [[T4]]
159 %t1 = getelementptr { i32, i32 }, ptr %x, i32 0, i32 1
160 %t3 = getelementptr { i32, i32 }, ptr %y, i32 0, i32 1
161 %t4 = icmp eq ptr %t1, %t3
165 define i1 @test10_addrspacecast(ptr %x, ptr addrspace(3) %y) {
166 ; CHECK-LABEL: @test10_addrspacecast(
167 ; CHECK-NEXT: [[T1:%.*]] = getelementptr i8, ptr [[X:%.*]], i64 4
168 ; CHECK-NEXT: [[T3:%.*]] = getelementptr i8, ptr addrspace(3) [[Y:%.*]], i64 4
169 ; CHECK-NEXT: [[T3_C:%.*]] = addrspacecast ptr addrspace(3) [[T3]] to ptr
170 ; CHECK-NEXT: [[T4:%.*]] = icmp eq ptr [[T1]], [[T3_C]]
171 ; CHECK-NEXT: ret i1 [[T4]]
173 %t1 = getelementptr { i32, i32 }, ptr %x, i32 0, i32 1
174 %t3 = getelementptr { i32, i32 }, ptr addrspace(3) %y, i32 0, i32 1
175 %t3.c = addrspacecast ptr addrspace(3) %t3 to ptr
176 %t4 = icmp eq ptr %t1, %t3.c
180 define i1 @test11(ptr %X) {
181 ; CHECK-LABEL: @test11(
182 ; CHECK-NEXT: [[Q:%.*]] = icmp eq ptr [[X:%.*]], null
183 ; CHECK-NEXT: ret i1 [[Q]]
185 %P = getelementptr { i32, i32 }, ptr %X, i32 0, i32 0
186 %Q = icmp eq ptr %P, null
192 define i32 @test12(ptr %a) {
193 ; CHECK-LABEL: @test12(
195 ; CHECK-NEXT: [[G3:%.*]] = getelementptr i8, ptr [[A:%.*]], i64 8
196 ; CHECK-NEXT: store i32 10, ptr [[G3]], align 4
197 ; CHECK-NEXT: ret i32 10
200 %g3 = getelementptr %struct.A, ptr %a, i32 0, i32 1
201 store i32 10, ptr %g3, align 4
205 %g5 = getelementptr %struct.A, ptr %a, i32 0, i32 1
206 %a_a = load i32, ptr %g5, align 4
212 %S = type { i32, [ 100 x i32] }
213 define i1 @test13(i64 %X, ptr %P) {
214 ; CHECK-LABEL: @test13(
215 ; CHECK-NEXT: [[C:%.*]] = icmp eq i64 [[X:%.*]], -1
216 ; CHECK-NEXT: ret i1 [[C]]
218 %A = getelementptr inbounds %S, ptr %P, i32 0, i32 1, i64 %X
219 %C = icmp eq ptr %A, %P
223 define <2 x i1> @test13_vector(<2 x i64> %X, <2 x ptr> %P) nounwind {
224 ; CHECK-LABEL: @test13_vector(
225 ; CHECK-NEXT: [[C:%.*]] = icmp eq <2 x i64> [[X:%.*]], splat (i64 -1)
226 ; CHECK-NEXT: ret <2 x i1> [[C]]
228 %A = getelementptr inbounds %S, <2 x ptr> %P, <2 x i64> zeroinitializer, <2 x i32> <i32 1, i32 1>, <2 x i64> %X
229 %B = getelementptr inbounds %S, <2 x ptr> %P, <2 x i64> <i64 0, i64 0>, <2 x i32> <i32 0, i32 0>
230 %C = icmp eq <2 x ptr> %A, %B
234 define <2 x i1> @test13_vector2(i64 %X, <2 x ptr> %P) nounwind {
235 ; CHECK-LABEL: @test13_vector2(
236 ; CHECK-NEXT: [[DOTSPLATINSERT:%.*]] = insertelement <2 x i64> poison, i64 [[X:%.*]], i64 0
237 ; CHECK-NEXT: [[TMP1:%.*]] = shl <2 x i64> [[DOTSPLATINSERT]], <i64 2, i64 0>
238 ; CHECK-NEXT: [[TMP2:%.*]] = icmp eq <2 x i64> [[TMP1]], <i64 -4, i64 poison>
239 ; CHECK-NEXT: [[C:%.*]] = shufflevector <2 x i1> [[TMP2]], <2 x i1> poison, <2 x i32> zeroinitializer
240 ; CHECK-NEXT: ret <2 x i1> [[C]]
242 %A = getelementptr inbounds %S, <2 x ptr> %P, <2 x i64> zeroinitializer, <2 x i32> <i32 1, i32 1>, i64 %X
243 %B = getelementptr inbounds %S, <2 x ptr> %P, <2 x i64> <i64 0, i64 0>, <2 x i32> <i32 0, i32 0>
244 %C = icmp eq <2 x ptr> %A, %B
248 define <2 x i1> @test13_fixed_fixed(i64 %X, ptr %P, <2 x i64> %y) nounwind {
249 ; CHECK-LABEL: @test13_fixed_fixed(
250 ; CHECK-NEXT: [[DOTSPLATINSERT:%.*]] = insertelement <2 x i64> poison, i64 [[X:%.*]], i64 0
251 ; CHECK-NEXT: [[TMP1:%.*]] = shl <2 x i64> [[DOTSPLATINSERT]], <i64 3, i64 0>
252 ; CHECK-NEXT: [[A_IDX:%.*]] = shufflevector <2 x i64> [[TMP1]], <2 x i64> poison, <2 x i32> zeroinitializer
253 ; CHECK-NEXT: [[B_IDX:%.*]] = shl nsw <2 x i64> [[Y:%.*]], splat (i64 4)
254 ; CHECK-NEXT: [[C:%.*]] = icmp eq <2 x i64> [[A_IDX]], [[B_IDX]]
255 ; CHECK-NEXT: ret <2 x i1> [[C]]
257 %A = getelementptr inbounds <2 x i64>, ptr %P, <2 x i64> zeroinitializer, i64 %X
258 %B = getelementptr inbounds <2 x i64>, ptr %P, <2 x i64> %y
259 %C = icmp eq <2 x ptr> %A, %B
263 define <2 x i1> @test13_fixed_scalable(i64 %X, ptr %P, <2 x i64> %y) nounwind {
264 ; CHECK-LABEL: @test13_fixed_scalable(
265 ; CHECK-NEXT: [[DOTSPLATINSERT:%.*]] = insertelement <2 x i64> poison, i64 [[X:%.*]], i64 0
266 ; CHECK-NEXT: [[TMP1:%.*]] = shl <2 x i64> [[DOTSPLATINSERT]], <i64 3, i64 0>
267 ; CHECK-NEXT: [[A_IDX:%.*]] = shufflevector <2 x i64> [[TMP1]], <2 x i64> poison, <2 x i32> zeroinitializer
268 ; CHECK-NEXT: [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
269 ; CHECK-NEXT: [[TMP3:%.*]] = shl i64 [[TMP2]], 4
270 ; CHECK-NEXT: [[DOTSPLATINSERT1:%.*]] = insertelement <2 x i64> poison, i64 [[TMP3]], i64 0
271 ; CHECK-NEXT: [[DOTSPLAT:%.*]] = shufflevector <2 x i64> [[DOTSPLATINSERT1]], <2 x i64> poison, <2 x i32> zeroinitializer
272 ; CHECK-NEXT: [[B_IDX:%.*]] = mul nsw <2 x i64> [[Y:%.*]], [[DOTSPLAT]]
273 ; CHECK-NEXT: [[C:%.*]] = icmp eq <2 x i64> [[A_IDX]], [[B_IDX]]
274 ; CHECK-NEXT: ret <2 x i1> [[C]]
276 %A = getelementptr inbounds <vscale x 2 x i64>, ptr %P, <2 x i64> zeroinitializer, i64 %X
277 %B = getelementptr inbounds <vscale x 2 x i64>, ptr %P, <2 x i64> %y
278 %C = icmp eq <2 x ptr> %A, %B
282 define <vscale x 2 x i1> @test13_scalable_scalable(i64 %X, ptr %P, <vscale x 2 x i64> %y) nounwind {
283 ; CHECK-LABEL: @test13_scalable_scalable(
284 ; CHECK-NEXT: [[DOTSPLATINSERT:%.*]] = insertelement <vscale x 2 x i64> poison, i64 [[X:%.*]], i64 0
285 ; CHECK-NEXT: [[DOTSPLAT:%.*]] = shufflevector <vscale x 2 x i64> [[DOTSPLATINSERT]], <vscale x 2 x i64> poison, <vscale x 2 x i32> zeroinitializer
286 ; CHECK-NEXT: [[A_IDX:%.*]] = shl nsw <vscale x 2 x i64> [[DOTSPLAT]], splat (i64 3)
287 ; CHECK-NEXT: [[TMP1:%.*]] = call i64 @llvm.vscale.i64()
288 ; CHECK-NEXT: [[TMP2:%.*]] = shl i64 [[TMP1]], 4
289 ; CHECK-NEXT: [[DOTSPLATINSERT1:%.*]] = insertelement <vscale x 2 x i64> poison, i64 [[TMP2]], i64 0
290 ; CHECK-NEXT: [[DOTSPLAT2:%.*]] = shufflevector <vscale x 2 x i64> [[DOTSPLATINSERT1]], <vscale x 2 x i64> poison, <vscale x 2 x i32> zeroinitializer
291 ; CHECK-NEXT: [[B_IDX:%.*]] = mul nsw <vscale x 2 x i64> [[Y:%.*]], [[DOTSPLAT2]]
292 ; CHECK-NEXT: [[C:%.*]] = icmp eq <vscale x 2 x i64> [[A_IDX]], [[B_IDX]]
293 ; CHECK-NEXT: ret <vscale x 2 x i1> [[C]]
295 %A = getelementptr inbounds <vscale x 2 x i64>, ptr %P, <vscale x 2 x i64> zeroinitializer, i64 %X
296 %B = getelementptr inbounds <vscale x 2 x i64>, ptr %P, <vscale x 2 x i64> %y
297 %C = icmp eq <vscale x 2 x ptr> %A, %B
298 ret <vscale x 2 x i1> %C
301 ; This is a test of icmp + shl nuw in disguise - 4611... is 0x3fff...
302 define <2 x i1> @test13_vector3(i64 %X, <2 x ptr> %P) nounwind {
303 ; CHECK-LABEL: @test13_vector3(
304 ; CHECK-NEXT: [[DOTSPLATINSERT:%.*]] = insertelement <2 x i64> poison, i64 [[X:%.*]], i64 0
305 ; CHECK-NEXT: [[TMP1:%.*]] = shl <2 x i64> [[DOTSPLATINSERT]], <i64 2, i64 0>
306 ; CHECK-NEXT: [[TMP2:%.*]] = icmp eq <2 x i64> [[TMP1]], <i64 4, i64 poison>
307 ; CHECK-NEXT: [[C:%.*]] = shufflevector <2 x i1> [[TMP2]], <2 x i1> poison, <2 x i32> zeroinitializer
308 ; CHECK-NEXT: ret <2 x i1> [[C]]
310 %A = getelementptr inbounds %S, <2 x ptr> %P, <2 x i64> zeroinitializer, <2 x i32> <i32 1, i32 1>, i64 %X
311 %B = getelementptr inbounds %S, <2 x ptr> %P, <2 x i64> <i64 0, i64 0>, <2 x i32> <i32 1, i32 1>, i64 1
312 %C = icmp eq <2 x ptr> %A, %B
316 define i1 @test13_as1(i16 %X, ptr addrspace(1) %P) {
317 ; CHECK-LABEL: @test13_as1(
318 ; CHECK-NEXT: [[C:%.*]] = icmp eq i16 [[X:%.*]], -1
319 ; CHECK-NEXT: ret i1 [[C]]
321 %A = getelementptr inbounds %S, ptr addrspace(1) %P, i16 0, i32 1, i16 %X
322 %C = icmp eq ptr addrspace(1) %A, %P
326 define <2 x i1> @test13_vector_as1(<2 x i16> %X, <2 x ptr addrspace(1)> %P) {
327 ; CHECK-LABEL: @test13_vector_as1(
328 ; CHECK-NEXT: [[C:%.*]] = icmp eq <2 x i16> [[X:%.*]], splat (i16 -1)
329 ; CHECK-NEXT: ret <2 x i1> [[C]]
331 %A = getelementptr inbounds %S, <2 x ptr addrspace(1)> %P, <2 x i16> <i16 0, i16 0>, <2 x i32> <i32 1, i32 1>, <2 x i16> %X
332 %B = getelementptr inbounds %S, <2 x ptr addrspace(1)> %P, <2 x i16> <i16 0, i16 0>, <2 x i32> <i32 0, i32 0>
333 %C = icmp eq <2 x ptr addrspace(1)> %A, %B
337 define i1 @test13_i32(i32 %X, ptr %P) {
338 ; CHECK-LABEL: @test13_i32(
339 ; CHECK-NEXT: [[C:%.*]] = icmp eq i32 [[X:%.*]], -1
340 ; CHECK-NEXT: ret i1 [[C]]
342 %A = getelementptr inbounds %S, ptr %P, i32 0, i32 1, i32 %X
343 %C = icmp eq ptr %A, %P
347 define i1 @test13_i16(i16 %X, ptr %P) {
348 ; CHECK-LABEL: @test13_i16(
349 ; CHECK-NEXT: [[C:%.*]] = icmp eq i16 [[X:%.*]], -1
350 ; CHECK-NEXT: ret i1 [[C]]
352 %A = getelementptr inbounds %S, ptr %P, i16 0, i32 1, i16 %X
353 %C = icmp eq ptr %A, %P
357 define i1 @test13_i128(i128 %X, ptr %P) {
358 ; CHECK-LABEL: @test13_i128(
359 ; CHECK-NEXT: [[TMP1:%.*]] = trunc i128 [[X:%.*]] to i64
360 ; CHECK-NEXT: [[C:%.*]] = icmp eq i64 [[TMP1]], -1
361 ; CHECK-NEXT: ret i1 [[C]]
363 %A = getelementptr inbounds %S, ptr %P, i128 0, i32 1, i128 %X
364 %C = icmp eq ptr %A, %P
369 @G = external global [3 x i8]
370 define ptr @test14(i32 %idx) {
371 ; CHECK-LABEL: @test14(
372 ; CHECK-NEXT: [[ZEXT:%.*]] = zext i32 [[IDX:%.*]] to i64
373 ; CHECK-NEXT: [[T:%.*]] = getelementptr i8, ptr @G, i64 [[ZEXT]]
374 ; CHECK-NEXT: ret ptr [[T]]
376 %zext = zext i32 %idx to i64
377 %t = getelementptr i8, ptr @G, i64 %zext
382 ; Test folding of constantexpr geps into normal geps.
383 @Array = external global [40 x i32]
384 define ptr @test15(i64 %X) {
385 ; CHECK-LABEL: @test15(
386 ; CHECK-NEXT: [[A:%.*]] = getelementptr i32, ptr @Array, i64 [[X:%.*]]
387 ; CHECK-NEXT: ret ptr [[A]]
389 %A = getelementptr i32, ptr @Array, i64 %X
393 define ptr @test_index_canon(ptr %X, i32 %Idx) {
394 ; CHECK-LABEL: @test_index_canon(
395 ; CHECK-NEXT: [[TMP1:%.*]] = sext i32 [[IDX:%.*]] to i64
396 ; CHECK-NEXT: [[R:%.*]] = getelementptr i32, ptr [[X:%.*]], i64 [[TMP1]]
397 ; CHECK-NEXT: ret ptr [[R]]
399 %R = getelementptr i32, ptr %X, i32 %Idx
403 define ptr @test_index_canon_inbounds(ptr %X, i32 %Idx) {
404 ; CHECK-LABEL: @test_index_canon_inbounds(
405 ; CHECK-NEXT: [[TMP1:%.*]] = sext i32 [[IDX:%.*]] to i64
406 ; CHECK-NEXT: [[R:%.*]] = getelementptr inbounds i32, ptr [[X:%.*]], i64 [[TMP1]]
407 ; CHECK-NEXT: ret ptr [[R]]
409 %R = getelementptr inbounds i32, ptr %X, i32 %Idx
413 define ptr @test_index_canon_nusw_nuw(ptr %X, i32 %Idx) {
414 ; CHECK-LABEL: @test_index_canon_nusw_nuw(
415 ; CHECK-NEXT: [[TMP1:%.*]] = sext i32 [[IDX:%.*]] to i64
416 ; CHECK-NEXT: [[R:%.*]] = getelementptr nusw nuw i32, ptr [[X:%.*]], i64 [[TMP1]]
417 ; CHECK-NEXT: ret ptr [[R]]
419 %R = getelementptr nusw nuw i32, ptr %X, i32 %Idx
423 define ptr @test_index_canon_const_expr_inbounds() {
424 ; CHECK-LABEL: @test_index_canon_const_expr_inbounds(
425 ; CHECK-NEXT: ret ptr getelementptr inbounds (i8, ptr @Global, i64 123)
427 ret ptr getelementptr inbounds (i8, ptr @Global, i32 123)
430 define ptr @test_index_canon_const_expr_nuw_nusw() {
431 ; CHECK-LABEL: @test_index_canon_const_expr_nuw_nusw(
432 ; CHECK-NEXT: ret ptr getelementptr nusw nuw (i8, ptr @Global, i64 123)
434 ret ptr getelementptr nusw nuw (i8, ptr @Global, i32 123)
437 define ptr @test_const_gep_gep_nuw() {
438 ; CHECK-LABEL: @test_const_gep_gep_nuw(
439 ; CHECK-NEXT: ret ptr getelementptr nuw (i8, ptr @Global, i64 246)
441 ret ptr getelementptr nuw (i8, ptr getelementptr nuw (i8, ptr @Global, i64 123), i64 123)
444 define ptr @test_const_gep_gep_nusw_no_overflow() {
445 ; CHECK-LABEL: @test_const_gep_gep_nusw_no_overflow(
446 ; CHECK-NEXT: ret ptr getelementptr nusw (i8, ptr @Global, i64 246)
448 ret ptr getelementptr nusw (i8, ptr getelementptr nusw (i8, ptr @Global, i64 123), i64 123)
451 define ptr @test_const_gep_gep_nusw_no_overflow_neg() {
452 ; CHECK-LABEL: @test_const_gep_gep_nusw_no_overflow_neg(
453 ; CHECK-NEXT: ret ptr getelementptr nusw (i8, ptr @Global, i64 -246)
455 ret ptr getelementptr nusw (i8, ptr getelementptr nusw (i8, ptr @Global, i64 -123), i64 -123)
458 define ptr @test_const_gep_gep_nusw_overflow() {
459 ; CHECK-LABEL: @test_const_gep_gep_nusw_overflow(
460 ; CHECK-NEXT: ret ptr getelementptr (i8, ptr @Global, i64 -2)
462 ret ptr getelementptr nusw (i8, ptr getelementptr nusw (i8, ptr @Global, i64 u0x7fffffffffffffff), i64 u0x7fffffffffffffff)
465 define i1 @test17(ptr %P, i32 %I, i32 %J) {
466 ; CHECK-LABEL: @test17(
467 ; CHECK-NEXT: [[C:%.*]] = icmp slt i32 [[I:%.*]], [[J:%.*]]
468 ; CHECK-NEXT: ret i1 [[C]]
470 %X = getelementptr inbounds i16, ptr %P, i32 %I
471 %Y = getelementptr inbounds i16, ptr %P, i32 %J
472 %C = icmp ult ptr %X, %Y
476 define i1 @test18(ptr %P, i32 %I) {
477 ; CHECK-LABEL: @test18(
478 ; CHECK-NEXT: [[C:%.*]] = icmp slt i32 [[I:%.*]], 0
479 ; CHECK-NEXT: ret i1 [[C]]
481 %X = getelementptr inbounds i16, ptr %P, i32 %I
482 %C = icmp ult ptr %X, %P
486 ; Larger than the pointer size for a non-zero address space
487 define i1 @test18_as1(ptr addrspace(1) %P, i32 %I) {
488 ; CHECK-LABEL: @test18_as1(
489 ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[I:%.*]], 32768
490 ; CHECK-NEXT: [[C:%.*]] = icmp ne i32 [[TMP1]], 0
491 ; CHECK-NEXT: ret i1 [[C]]
493 %X = getelementptr inbounds i16, ptr addrspace(1) %P, i32 %I
494 %C = icmp ult ptr addrspace(1) %X, %P
498 ; Smaller than the pointer size for a non-zero address space
499 define i1 @test18_as1_i32(ptr addrspace(1) %P, i32 %I) {
500 ; CHECK-LABEL: @test18_as1_i32(
501 ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[I:%.*]], 32768
502 ; CHECK-NEXT: [[C:%.*]] = icmp ne i32 [[TMP1]], 0
503 ; CHECK-NEXT: ret i1 [[C]]
505 %X = getelementptr inbounds i16, ptr addrspace(1) %P, i32 %I
506 %C = icmp ult ptr addrspace(1) %X, %P
510 ; Smaller than pointer size
511 define i1 @test18_i16(ptr %P, i16 %I) {
512 ; CHECK-LABEL: @test18_i16(
513 ; CHECK-NEXT: [[C:%.*]] = icmp slt i16 [[I:%.*]], 0
514 ; CHECK-NEXT: ret i1 [[C]]
516 %X = getelementptr inbounds i16, ptr %P, i16 %I
517 %C = icmp ult ptr %X, %P
521 ; Same as pointer size
522 define i1 @test18_i64(ptr %P, i64 %I) {
523 ; CHECK-LABEL: @test18_i64(
524 ; CHECK-NEXT: [[C:%.*]] = icmp slt i64 [[I:%.*]], 0
525 ; CHECK-NEXT: ret i1 [[C]]
527 %X = getelementptr inbounds i16, ptr %P, i64 %I
528 %C = icmp ult ptr %X, %P
532 ; Larger than the pointer size
533 define i1 @test18_i128(ptr %P, i128 %I) {
534 ; CHECK-LABEL: @test18_i128(
535 ; CHECK-NEXT: [[TMP1:%.*]] = and i128 [[I:%.*]], 9223372036854775808
536 ; CHECK-NEXT: [[C:%.*]] = icmp ne i128 [[TMP1]], 0
537 ; CHECK-NEXT: ret i1 [[C]]
539 %X = getelementptr inbounds i16, ptr %P, i128 %I
540 %C = icmp ult ptr %X, %P
544 define i32 @test19(ptr %P, i32 %A, i32 %B) {
545 ; CHECK-LABEL: @test19(
546 ; CHECK-NEXT: [[T10:%.*]] = icmp eq i32 [[A:%.*]], [[B:%.*]]
547 ; CHECK-NEXT: [[T11:%.*]] = zext i1 [[T10]] to i32
548 ; CHECK-NEXT: ret i32 [[T11]]
550 %t4 = getelementptr inbounds i32, ptr %P, i32 %A
551 %t9 = getelementptr inbounds i32, ptr %P, i32 %B
552 %t10 = icmp eq ptr %t4, %t9
553 %t11 = zext i1 %t10 to i32
557 define i32 @test20(ptr %P, i32 %A, i32 %B) {
558 ; CHECK-LABEL: @test20(
559 ; CHECK-NEXT: [[T6:%.*]] = icmp eq i32 [[A:%.*]], 0
560 ; CHECK-NEXT: [[T7:%.*]] = zext i1 [[T6]] to i32
561 ; CHECK-NEXT: ret i32 [[T7]]
563 %t4 = getelementptr inbounds i32, ptr %P, i32 %A
564 %t6 = icmp eq ptr %t4, %P
565 %t7 = zext i1 %t6 to i32
569 define i32 @test20_as1(ptr addrspace(1) %P, i32 %A, i32 %B) {
570 ; CHECK-LABEL: @test20_as1(
571 ; CHECK-NEXT: [[TMP1:%.*]] = trunc i32 [[A:%.*]] to i16
572 ; CHECK-NEXT: [[T6:%.*]] = icmp eq i16 [[TMP1]], 0
573 ; CHECK-NEXT: [[T7:%.*]] = zext i1 [[T6]] to i32
574 ; CHECK-NEXT: ret i32 [[T7]]
576 %t4 = getelementptr inbounds i32, ptr addrspace(1) %P, i32 %A
577 %t6 = icmp eq ptr addrspace(1) %t4, %P
578 %t7 = zext i1 %t6 to i32
583 define i32 @test21() {
584 ; CHECK-LABEL: @test21(
585 ; CHECK-NEXT: [[PBOB1:%.*]] = alloca [[INTSTRUCT:%.*]], align 8
586 ; CHECK-NEXT: [[RVAL:%.*]] = load i32, ptr [[PBOB1]], align 4
587 ; CHECK-NEXT: ret i32 [[RVAL]]
589 %pbob1 = alloca %intstruct
590 %pbob2 = getelementptr %intstruct, ptr %pbob1
591 %rval = load i32, ptr %pbob2
596 @A = global i32 1 ; <ptr> [#uses=1]
597 @B = global i32 2 ; <ptr> [#uses=1]
599 define i1 @test22() {
600 ; CHECK-LABEL: @test22(
601 ; CHECK-NEXT: [[C:%.*]] = icmp ult ptr getelementptr inbounds (i8, ptr @A, i64 4), getelementptr (i8, ptr @B, i64 8)
602 ; CHECK-NEXT: ret i1 [[C]]
604 %C = icmp ult ptr getelementptr (i32, ptr @A, i64 1),
605 getelementptr (i32, ptr @B, i64 2)
610 %X = type { [10 x i32], float }
612 define i1 @test23() {
613 ; CHECK-LABEL: @test23(
614 ; CHECK-NEXT: ret i1 false
616 %A = getelementptr %X, ptr null, i64 0, i32 0, i64 0 ; <ptr> [#uses=1]
617 %B = icmp ne ptr %A, null ; <i1> [#uses=1]
621 define void @test25() {
622 ; CHECK-LABEL: @test25(
624 ; CHECK-NEXT: unreachable
627 %t = getelementptr { i64, i64, i64, i64 }, ptr null, i32 0, i32 3
628 %t.upgrd.1 = load i64, ptr %t
629 %t8.ui = load i64, ptr null
630 %t8 = bitcast i64 %t8.ui to i64
631 %t9 = and i64 %t8, %t.upgrd.1
632 %sext = trunc i64 %t9 to i32
633 %t27.i = sext i32 %sext to i64
634 tail call void @foo25( i32 0, i64 %t27.i )
638 declare void @foo25(i32, i64)
642 define i1 @test26(ptr %arr) {
643 ; CHECK-LABEL: @test26(
644 ; CHECK-NEXT: ret i1 true
646 %X = getelementptr i8, ptr %arr, i32 1
647 %Y = getelementptr i8, ptr %arr, i32 1
648 %test = icmp uge ptr %X, %Y
652 %struct.__large_struct = type { [100 x i64] }
653 %struct.compat_siginfo = type { i32, i32, i32, { [29 x i32] } }
654 %struct.siginfo_t = type { i32, i32, i32, { { i32, i32, [0 x i8], %struct.sigval_t, i32 }, [88 x i8] } }
655 %struct.sigval_t = type { ptr }
657 define i32 @test27(ptr %to, ptr %from) {
658 ; CHECK-LABEL: @test27(
660 ; CHECK-NEXT: [[FROM_ADDR:%.*]] = alloca ptr, align 8
661 ; CHECK-NEXT: [[T344:%.*]] = load ptr, ptr [[FROM_ADDR]], align 8
662 ; CHECK-NEXT: [[T348:%.*]] = getelementptr i8, ptr [[T344]], i64 24
663 ; CHECK-NEXT: [[T351:%.*]] = load i32, ptr [[T348]], align 8
664 ; CHECK-NEXT: [[T360:%.*]] = call i32 asm sideeffect "...", "=r,ir,*m,i,0,~{dirflag},~{fpsr},~{flags}"(i32 [[T351]], ptr elementtype([[STRUCT___LARGE_STRUCT:%.*]]) null, i32 -14, i32 0) #[[ATTR0:[0-9]+]]
665 ; CHECK-NEXT: unreachable
668 %from_addr = alloca ptr
669 %t344 = load ptr, ptr %from_addr, align 8
670 %t345 = getelementptr %struct.siginfo_t, ptr %t344, i32 0, i32 3
671 %t346 = getelementptr { { i32, i32, [0 x i8], %struct.sigval_t, i32 }, [88 x i8] }, ptr %t345, i32 0, i32 0
672 %t348 = getelementptr { i32, i32, %struct.sigval_t }, ptr %t346, i32 0, i32 2
673 %t351 = load i32, ptr %t348, align 8
674 %t360 = call i32 asm sideeffect "...",
675 "=r,ir,*m,i,0,~{dirflag},~{fpsr},~{flags}"( i32 %t351, ptr elementtype(%struct.__large_struct) null, i32 -14, i32 0 )
680 %struct.x = type <{ i8 }>
681 @.str = internal constant [6 x i8] c"Main!\00"
682 @.str1 = internal constant [12 x i8] c"destroy %p\0A\00"
684 define i32 @test28() nounwind {
685 ; CHECK-LABEL: @test28(
687 ; CHECK-NEXT: [[ORIENTATIONS:%.*]] = alloca [1 x [1 x %struct.x]], align 8
688 ; CHECK-NEXT: [[T3:%.*]] = call i32 @puts(ptr noundef nonnull dereferenceable(1) @.str) #[[ATTR0]]
689 ; CHECK-NEXT: [[T45:%.*]] = getelementptr inbounds i8, ptr [[ORIENTATIONS]], i64 1
690 ; CHECK-NEXT: br label [[BB10:%.*]]
692 ; CHECK-NEXT: [[INDVAR:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INDVAR_NEXT:%.*]], [[BB10]] ]
693 ; CHECK-NEXT: [[T12_REC:%.*]] = xor i32 [[INDVAR]], -1
694 ; CHECK-NEXT: [[TMP0:%.*]] = sext i32 [[T12_REC]] to i64
695 ; CHECK-NEXT: [[T12:%.*]] = getelementptr inbounds [[STRUCT_X:%.*]], ptr [[T45]], i64 [[TMP0]]
696 ; CHECK-NEXT: [[T16:%.*]] = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str1, ptr nonnull [[T12]]) #[[ATTR0]]
697 ; CHECK-NEXT: [[T84:%.*]] = icmp eq ptr [[T12]], [[ORIENTATIONS]]
698 ; CHECK-NEXT: [[INDVAR_NEXT]] = add i32 [[INDVAR]], 1
699 ; CHECK-NEXT: br i1 [[T84]], label [[BB17:%.*]], label [[BB10]]
701 ; CHECK-NEXT: ret i32 0
704 %orientations = alloca [1 x [1 x %struct.x]]
705 %t3 = call i32 @puts( ptr @.str ) nounwind
706 %t45 = getelementptr inbounds [1 x [1 x %struct.x]], ptr %orientations, i32 1, i32 0, i32 0
710 %indvar = phi i32 [ 0, %entry ], [ %indvar.next, %bb10 ]
711 %t.0.reg2mem.0.rec = mul i32 %indvar, -1
712 %t12.rec = add i32 %t.0.reg2mem.0.rec, -1
713 %t12 = getelementptr inbounds %struct.x, ptr %t45, i32 %t12.rec
714 %t16 = call i32 (ptr, ...) @printf( ptr nonnull dereferenceable(1) @.str1, ptr %t12 ) nounwind
715 %t84 = icmp eq ptr %t12, %orientations
716 %indvar.next = add i32 %indvar, 1
717 br i1 %t84, label %bb17, label %bb10
723 declare i32 @puts(ptr)
725 declare i32 @printf(ptr, ...)
731 %T = type <{ i64, i64, i64 }>
732 define i32 @test29(ptr %start, i32 %X) nounwind {
733 ; CHECK-LABEL: @test29(
735 ; CHECK-NEXT: store i1 true, ptr poison, align 1
736 ; CHECK-NEXT: br i1 poison, label [[IF_THEN216:%.*]], label [[IF_END363:%.*]]
738 ; CHECK-NEXT: ret i32 1
740 ; CHECK-NEXT: ret i32 0
743 %t3 = load i64, ptr null
744 %add.ptr = getelementptr i8, ptr %start, i64 %t3
745 %t158 = load i32, ptr null
746 %add.ptr159 = getelementptr %T, ptr null, i32 %t158
747 %add.ptr212 = getelementptr i8, ptr %start, i32 %X
748 %cmp214 = icmp ugt ptr %add.ptr212, %add.ptr
749 br i1 %cmp214, label %if.then216, label %if.end363
760 define i32 @test30(i32 %m, i32 %n) nounwind {
761 ; CHECK-LABEL: @test30(
763 ; CHECK-NEXT: [[TMP0:%.*]] = zext i32 [[N:%.*]] to i64
764 ; CHECK-NEXT: [[TMP1:%.*]] = alloca i32, i64 [[TMP0]], align 4
765 ; CHECK-NEXT: call void @test30f(ptr nonnull [[TMP1]]) #[[ATTR0]]
766 ; CHECK-NEXT: [[TMP2:%.*]] = sext i32 [[M:%.*]] to i64
767 ; CHECK-NEXT: [[TMP3:%.*]] = getelementptr [0 x i32], ptr [[TMP1]], i64 0, i64 [[TMP2]]
768 ; CHECK-NEXT: [[TMP4:%.*]] = load i32, ptr [[TMP3]], align 4
769 ; CHECK-NEXT: ret i32 [[TMP4]]
772 %0 = alloca i32, i32 %n, align 4
773 call void @test30f(ptr %0) nounwind
774 %1 = getelementptr [0 x i32], ptr %0, i32 0, i32 %m
775 %2 = load i32, ptr %1, align 4
779 declare void @test30f(ptr)
783 define i1 @test31(ptr %A) {
784 ; CHECK-LABEL: @test31(
785 ; CHECK-NEXT: ret i1 true
787 %B = getelementptr i32, ptr %A, i32 1
788 %C = getelementptr i32, ptr %A, i64 1
789 %V = icmp eq ptr %B, %C
795 define ptr @test32(ptr %v) {
796 ; CHECK-LABEL: @test32(
797 ; CHECK-NEXT: [[A:%.*]] = alloca [4 x ptr], align 16
798 ; CHECK-NEXT: store ptr null, ptr [[A]], align 8
799 ; CHECK-NEXT: [[D:%.*]] = getelementptr inbounds i8, ptr [[A]], i64 8
800 ; CHECK-NEXT: store ptr [[V:%.*]], ptr [[D]], align 8
801 ; CHECK-NEXT: [[F:%.*]] = getelementptr inbounds i8, ptr [[A]], i64 16
802 ; CHECK-NEXT: [[G:%.*]] = load ptr, ptr [[F]], align 8
803 ; CHECK-NEXT: ret ptr [[G]]
805 %A = alloca [4 x ptr], align 16
806 store ptr null, ptr %A
807 %D = getelementptr { [16 x i8] }, ptr %A, i32 0, i32 0, i32 8
809 %F = getelementptr [4 x ptr], ptr %A, i32 0, i32 2
810 %G = load ptr, ptr %F
815 %struct.Key = type { { i32, i32 } }
816 %struct.anon = type <{ i8, [3 x i8], i32 }>
818 define ptr @test33(ptr %A) {
819 ; CHECK-LABEL: @test33(
820 ; CHECK-NEXT: [[C:%.*]] = getelementptr i8, ptr [[A:%.*]], i64 4
821 ; CHECK-NEXT: ret ptr [[C]]
823 %C = getelementptr %struct.anon, ptr %A, i32 0, i32 2
827 define ptr addrspace(1) @test33_as1(ptr addrspace(1) %A) {
828 ; CHECK-LABEL: @test33_as1(
829 ; CHECK-NEXT: [[C:%.*]] = getelementptr i8, ptr addrspace(1) [[A:%.*]], i16 4
830 ; CHECK-NEXT: ret ptr addrspace(1) [[C]]
832 %C = getelementptr %struct.anon, ptr addrspace(1) %A, i32 0, i32 2
833 ret ptr addrspace(1) %C
836 define ptr addrspace(1) @test33_array_as1(ptr addrspace(1) %A) {
837 ; CHECK-LABEL: @test33_array_as1(
838 ; CHECK-NEXT: [[C:%.*]] = getelementptr i8, ptr addrspace(1) [[A:%.*]], i16 8
839 ; CHECK-NEXT: ret ptr addrspace(1) [[C]]
841 %C = getelementptr [5 x i32], ptr addrspace(1) %A, i32 0, i32 2
842 ret ptr addrspace(1) %C
845 ; Make sure the GEP indices use the right pointer sized integer
846 define ptr addrspace(1) @test33_array_struct_as1(ptr addrspace(1) %A) {
847 ; CHECK-LABEL: @test33_array_struct_as1(
848 ; CHECK-NEXT: [[C:%.*]] = getelementptr i8, ptr addrspace(1) [[A:%.*]], i16 8
849 ; CHECK-NEXT: ret ptr addrspace(1) [[C]]
851 %C = getelementptr [20 x i32], ptr addrspace(1) %A, i32 0, i32 2
852 ret ptr addrspace(1) %C
855 define ptr addrspace(1) @test33_addrspacecast(ptr %A) {
856 ; CHECK-LABEL: @test33_addrspacecast(
857 ; CHECK-NEXT: [[B:%.*]] = addrspacecast ptr [[A:%.*]] to ptr addrspace(1)
858 ; CHECK-NEXT: [[C:%.*]] = getelementptr i8, ptr addrspace(1) [[B]], i16 4
859 ; CHECK-NEXT: ret ptr addrspace(1) [[C]]
861 %B = addrspacecast ptr %A to ptr addrspace(1)
862 %C = getelementptr %struct.anon, ptr addrspace(1) %B, i32 0, i32 2
863 ret ptr addrspace(1) %C
866 %T2 = type { ptr, i8 }
867 define ptr @test34(ptr %Val, i64 %V) nounwind {
868 ; CHECK-LABEL: @test34(
870 ; CHECK-NEXT: [[C_CAST:%.*]] = inttoptr i64 [[V:%.*]] to ptr
871 ; CHECK-NEXT: ret ptr [[C_CAST]]
874 %A = alloca %T2, align 8
877 %C = load ptr, ptr %A, align 8
881 %t0 = type { ptr, [19 x i8] }
882 %t1 = type { ptr, [0 x i8] }
884 @array = external global [11 x i8]
886 @s = external global %t0
887 @"\01LC8" = external constant [17 x i8]
889 ; Instcombine should be able to fold this getelementptr.
891 define i32 @test35() nounwind {
892 ; CHECK-LABEL: @test35(
893 ; CHECK-NEXT: [[TMP1:%.*]] = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @"\01LC8", ptr nonnull getelementptr inbounds (i8, ptr @s, i64 8)) #[[ATTR0]]
894 ; CHECK-NEXT: ret i32 0
896 call i32 (ptr, ...) @printf(ptr @"\01LC8",
897 ptr getelementptr (%t1, ptr @s, i32 0, i32 1, i32 0)) nounwind
901 ; Don't treat signed offsets as unsigned.
902 define ptr @test36() nounwind {
903 ; CHECK-LABEL: @test36(
904 ; CHECK-NEXT: ret ptr getelementptr (i8, ptr @array, i64 -1)
906 ret ptr getelementptr ([11 x i8], ptr @array, i32 0, i64 -1)
909 ; Instcombine shouldn't assume that gep(A,0,1) != gep(A,1,0).
910 @A37 = external constant [1 x i8]
911 define i1 @test37() nounwind {
912 ; CHECK-LABEL: @test37(
913 ; CHECK-NEXT: ret i1 true
915 %t = icmp eq ptr getelementptr ([1 x i8], ptr @A37, i64 0, i64 1),
916 getelementptr ([1 x i8], ptr @A37, i64 1, i64 0)
920 ; Test index promotion
921 define ptr @test38(ptr %I, i32 %n) {
922 ; CHECK-LABEL: @test38(
923 ; CHECK-NEXT: [[TMP1:%.*]] = sext i32 [[N:%.*]] to i64
924 ; CHECK-NEXT: [[A:%.*]] = getelementptr i32, ptr [[I:%.*]], i64 [[TMP1]]
925 ; CHECK-NEXT: ret ptr [[A]]
927 %A = getelementptr i32, ptr %I, i32 %n
931 ; Test that we don't duplicate work when the second gep is a "bitcast".
932 %pr10322_t = type { ptr }
933 declare void @pr10322_f2(ptr)
934 declare void @pr10322_f3(ptr)
935 define void @pr10322_f1(ptr %foo) {
936 ; CHECK-LABEL: @pr10322_f1(
938 ; CHECK-NEXT: [[ARRAYIDX8:%.*]] = getelementptr inbounds i8, ptr [[FOO:%.*]], i64 16
939 ; CHECK-NEXT: call void @pr10322_f2(ptr nonnull [[ARRAYIDX8]]) #[[ATTR0]]
940 ; CHECK-NEXT: call void @pr10322_f3(ptr nonnull [[ARRAYIDX8]]) #[[ATTR0]]
941 ; CHECK-NEXT: ret void
944 %arrayidx8 = getelementptr inbounds %pr10322_t, ptr %foo, i64 2
945 call void @pr10322_f2(ptr %arrayidx8) nounwind
946 call void @pr10322_f3(ptr %arrayidx8) nounwind
951 ; Test that we combine the last two geps in this sequence, before we
952 ; would wait for gep1 and gep2 to be combined and never combine 2 and 3.
953 %three_gep_t = type {i32}
954 %three_gep_t2 = type {%three_gep_t}
956 define void @three_gep_f(ptr %x) {
957 ; CHECK-LABEL: @three_gep_f(
958 ; CHECK-NEXT: [[GEP1:%.*]] = getelementptr i8, ptr [[X:%.*]], i64 8
959 ; CHECK-NEXT: call void @three_gep_h(ptr [[GEP1]])
960 ; CHECK-NEXT: call void @three_gep_g(ptr [[GEP1]])
961 ; CHECK-NEXT: ret void
963 %gep1 = getelementptr %three_gep_t2, ptr %x, i64 2
964 call void @three_gep_h(ptr %gep1)
965 call void @three_gep_g(ptr %gep1)
970 declare void @three_gep_g(ptr)
971 declare void @three_gep_h(ptr)
973 %struct.ham = type { i32, ptr, ptr, ptr }
974 %struct.zot = type { i64, i8 }
976 define void @test39(ptr %arg, i8 %arg1) nounwind {
977 ; CHECK-LABEL: @test39(
978 ; CHECK-NEXT: [[T:%.*]] = getelementptr inbounds i8, ptr [[ARG:%.*]], i64 16
979 ; CHECK-NEXT: [[T2:%.*]] = load ptr, ptr [[T]], align 8
980 ; CHECK-NEXT: [[T4:%.*]] = getelementptr inbounds i8, ptr [[T2]], i64 -8
981 ; CHECK-NEXT: store i8 [[ARG1:%.*]], ptr [[T4]], align 8
982 ; CHECK-NEXT: ret void
984 %t = getelementptr inbounds %struct.ham, ptr %arg, i64 0, i32 2
985 %t2 = load ptr, ptr %t, align 8
986 %t4 = getelementptr inbounds i8, ptr %t2, i64 -8
987 store i8 %arg1, ptr %t4, align 8
992 define i1 @pr16483(ptr %a, ptr %b) {
993 ; CHECK-LABEL: @pr16483(
994 ; CHECK-NEXT: [[CMP:%.*]] = icmp ult ptr [[A:%.*]], [[B:%.*]]
995 ; CHECK-NEXT: ret i1 [[CMP]]
997 %cmp = icmp ult ptr %a, %b
1002 define i8 @test_gep_bitcast_as1(ptr addrspace(1) %arr, i16 %N) {
1003 ; CHECK-LABEL: @test_gep_bitcast_as1(
1004 ; CHECK-NEXT: [[V:%.*]] = shl i16 [[N:%.*]], 2
1005 ; CHECK-NEXT: [[T:%.*]] = getelementptr i8, ptr addrspace(1) [[ARR:%.*]], i16 [[V]]
1006 ; CHECK-NEXT: [[X:%.*]] = load i8, ptr addrspace(1) [[T]], align 1
1007 ; CHECK-NEXT: ret i8 [[X]]
1010 %t = getelementptr i8, ptr addrspace(1) %arr, i16 %V
1011 %x = load i8, ptr addrspace(1) %t
1015 ; The element size of the array matches the element size of the pointer
1016 define i64 @test_gep_bitcast_array_same_size_element(ptr %arr, i64 %N) {
1017 ; CHECK-LABEL: @test_gep_bitcast_array_same_size_element(
1018 ; CHECK-NEXT: [[T_IDX:%.*]] = shl i64 [[N:%.*]], 6
1019 ; CHECK-NEXT: [[T:%.*]] = getelementptr i8, ptr [[ARR:%.*]], i64 [[T_IDX]]
1020 ; CHECK-NEXT: [[X:%.*]] = load i64, ptr [[T]], align 4
1021 ; CHECK-NEXT: ret i64 [[X]]
1024 %t = getelementptr i64, ptr %arr, i64 %V
1025 %x = load i64, ptr %t
1029 ; gep should be done in the original address space.
1030 define i64 @test_gep_bitcast_array_same_size_element_addrspacecast(ptr %arr, i64 %N) {
1031 ; CHECK-LABEL: @test_gep_bitcast_array_same_size_element_addrspacecast(
1032 ; CHECK-NEXT: [[CAST:%.*]] = addrspacecast ptr [[ARR:%.*]] to ptr addrspace(3)
1033 ; CHECK-NEXT: [[T_IDX:%.*]] = shl i64 [[N:%.*]], 6
1034 ; CHECK-NEXT: [[T:%.*]] = getelementptr i8, ptr addrspace(3) [[CAST]], i64 [[T_IDX]]
1035 ; CHECK-NEXT: [[X:%.*]] = load i64, ptr addrspace(3) [[T]], align 4
1036 ; CHECK-NEXT: ret i64 [[X]]
1038 %cast = addrspacecast ptr %arr to ptr addrspace(3)
1040 %t = getelementptr i64, ptr addrspace(3) %cast, i64 %V
1041 %x = load i64, ptr addrspace(3) %t
1045 ; The element size of the array is different the element size of the pointer
1046 define i8 @test_gep_bitcast_array_different_size_element(ptr %arr, i64 %N) {
1047 ; CHECK-LABEL: @test_gep_bitcast_array_different_size_element(
1048 ; CHECK-NEXT: [[V:%.*]] = shl i64 [[N:%.*]], 3
1049 ; CHECK-NEXT: [[T:%.*]] = getelementptr i8, ptr [[ARR:%.*]], i64 [[V]]
1050 ; CHECK-NEXT: [[X:%.*]] = load i8, ptr [[T]], align 1
1051 ; CHECK-NEXT: ret i8 [[X]]
1054 %t = getelementptr i8, ptr %arr, i64 %V
1055 %x = load i8, ptr %t
1059 define i64 @test_gep_bitcast_array_same_size_element_as1(ptr addrspace(1) %arr, i16 %N) {
1060 ; CHECK-LABEL: @test_gep_bitcast_array_same_size_element_as1(
1061 ; CHECK-NEXT: [[T_IDX:%.*]] = shl i16 [[N:%.*]], 6
1062 ; CHECK-NEXT: [[T:%.*]] = getelementptr i8, ptr addrspace(1) [[ARR:%.*]], i16 [[T_IDX]]
1063 ; CHECK-NEXT: [[X:%.*]] = load i64, ptr addrspace(1) [[T]], align 4
1064 ; CHECK-NEXT: ret i64 [[X]]
1067 %t = getelementptr i64, ptr addrspace(1) %arr, i16 %V
1068 %x = load i64, ptr addrspace(1) %t
1072 define i8 @test_gep_bitcast_array_different_size_element_as1(ptr addrspace(1) %arr, i16 %N) {
1073 ; CHECK-LABEL: @test_gep_bitcast_array_different_size_element_as1(
1074 ; CHECK-NEXT: [[V:%.*]] = shl i16 [[N:%.*]], 3
1075 ; CHECK-NEXT: [[T:%.*]] = getelementptr i8, ptr addrspace(1) [[ARR:%.*]], i16 [[V]]
1076 ; CHECK-NEXT: [[X:%.*]] = load i8, ptr addrspace(1) [[T]], align 1
1077 ; CHECK-NEXT: ret i8 [[X]]
1080 %t = getelementptr i8, ptr addrspace(1) %arr, i16 %V
1081 %x = load i8, ptr addrspace(1) %t
1085 define i64 @test40() {
1086 ; CHECK-LABEL: @test40(
1087 ; CHECK-NEXT: ret i64 8
1089 %array = alloca [3 x i32], align 4
1090 %gep = getelementptr inbounds [3 x i32], ptr %array, i64 0, i64 2
1091 %p = ptrtoint ptr %array to i64
1093 %gep2 = getelementptr i8, ptr %gep, i64 %np
1094 %ret = ptrtoint ptr %gep2 to i64
1099 define i16 @test41(ptr addrspace(1) %array) {
1100 ; CHECK-LABEL: @test41(
1101 ; CHECK-NEXT: ret i16 8
1103 %gep = getelementptr inbounds [3 x i32], ptr addrspace(1) %array, i16 0, i16 2
1104 %p = ptrtoint ptr addrspace(1) %array to i16
1106 %gep2 = getelementptr i8, ptr addrspace(1) %gep, i16 %np
1107 %ret = ptrtoint ptr addrspace(1) %gep2 to i16
1112 define ptr @test42i(ptr %c1, ptr %c2) {
1113 ; CHECK-LABEL: @test42i(
1114 ; CHECK-NEXT: [[PTRTOINT:%.*]] = ptrtoint ptr [[C1:%.*]] to i64
1115 ; CHECK-NEXT: [[SUB:%.*]] = sub i64 0, [[PTRTOINT]]
1116 ; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[C2:%.*]], i64 [[SUB]]
1117 ; CHECK-NEXT: ret ptr [[GEP]]
1119 %ptrtoint = ptrtoint ptr %c1 to i64
1120 %sub = sub i64 0, %ptrtoint
1121 %gep = getelementptr inbounds i8, ptr %c2, i64 %sub
1126 define ptr @test42(ptr %c1, ptr %c2) {
1127 ; CHECK-LABEL: @test42(
1128 ; CHECK-NEXT: [[PTRTOINT:%.*]] = ptrtoint ptr [[C1:%.*]] to i64
1129 ; CHECK-NEXT: [[SUB:%.*]] = sub i64 0, [[PTRTOINT]]
1130 ; CHECK-NEXT: [[GEP:%.*]] = getelementptr i8, ptr [[C2:%.*]], i64 [[SUB]]
1131 ; CHECK-NEXT: ret ptr [[GEP]]
1133 %ptrtoint = ptrtoint ptr %c1 to i64
1134 %sub = sub i64 0, %ptrtoint
1135 %gep = getelementptr i8, ptr %c2, i64 %sub
1140 define ptr @test43i(ptr %c1, ptr %c2) {
1141 ; CHECK-LABEL: @test43i(
1142 ; CHECK-NEXT: [[PTRTOINT:%.*]] = ptrtoint ptr [[C1:%.*]] to i64
1143 ; CHECK-NEXT: [[SUB:%.*]] = sub i64 0, [[PTRTOINT]]
1144 ; CHECK-NEXT: [[SHR:%.*]] = ashr i64 [[SUB]], 1
1145 ; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i16, ptr [[C2:%.*]], i64 [[SHR]]
1146 ; CHECK-NEXT: ret ptr [[GEP]]
1148 %ptrtoint = ptrtoint ptr %c1 to i64
1149 %sub = sub i64 0, %ptrtoint
1150 %shr = ashr i64 %sub, 1
1151 %gep = getelementptr inbounds i16, ptr %c2, i64 %shr
1156 define ptr @test44i(ptr %c1, ptr %c2) {
1157 ; CHECK-LABEL: @test44i(
1158 ; CHECK-NEXT: [[PTRTOINT:%.*]] = ptrtoint ptr [[C1:%.*]] to i64
1159 ; CHECK-NEXT: [[SUB:%.*]] = sub i64 0, [[PTRTOINT]]
1160 ; CHECK-NEXT: [[SHR:%.*]] = sdiv i64 [[SUB]], 7
1161 ; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds [[STRUCT_C:%.*]], ptr [[C2:%.*]], i64 [[SHR]]
1162 ; CHECK-NEXT: ret ptr [[GEP]]
1164 %ptrtoint = ptrtoint ptr %c1 to i64
1165 %sub = sub i64 0, %ptrtoint
1166 %shr = sdiv i64 %sub, 7
1167 %gep = getelementptr inbounds %struct.C, ptr %c2, i64 %shr
1172 define ptr @test45(ptr %c1, ptr %c2) {
1173 ; CHECK-LABEL: @test45(
1174 ; CHECK-NEXT: [[PTRTOINT1:%.*]] = ptrtoint ptr [[C1:%.*]] to i64
1175 ; CHECK-NEXT: [[PTRTOINT2:%.*]] = ptrtoint ptr [[C2:%.*]] to i64
1176 ; CHECK-NEXT: [[SUB:%.*]] = sub i64 [[PTRTOINT2]], [[PTRTOINT1]]
1177 ; CHECK-NEXT: [[SHR:%.*]] = sdiv i64 [[SUB]], 7
1178 ; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds [[STRUCT_C:%.*]], ptr [[C1]], i64 [[SHR]]
1179 ; CHECK-NEXT: ret ptr [[GEP]]
1181 %ptrtoint1 = ptrtoint ptr %c1 to i64
1182 %ptrtoint2 = ptrtoint ptr %c2 to i64
1183 %sub = sub i64 %ptrtoint2, %ptrtoint1 ; C2 - C1
1184 %shr = sdiv i64 %sub, 7
1185 %gep = getelementptr inbounds %struct.C, ptr %c1, i64 %shr ; C1 + (C2 - C1)
1189 define ptr @test46(ptr %c1, ptr %c2, i64 %N) {
1190 ; CHECK-LABEL: @test46(
1191 ; CHECK-NEXT: [[PTRTOINT:%.*]] = ptrtoint ptr [[C1:%.*]] to i64
1192 ; CHECK-NEXT: [[SUB:%.*]] = sub i64 0, [[PTRTOINT]]
1193 ; CHECK-NEXT: [[SDIV:%.*]] = sdiv i64 [[SUB]], [[N:%.*]]
1194 ; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds [[STRUCT_C:%.*]], ptr [[C2:%.*]], i64 [[SDIV]]
1195 ; CHECK-NEXT: ret ptr [[GEP]]
1197 %ptrtoint = ptrtoint ptr %c1 to i64
1198 %sub = sub i64 0, %ptrtoint
1199 %sdiv = sdiv i64 %sub, %N
1200 %gep = getelementptr inbounds %struct.C, ptr %c2, i64 %sdiv
1205 define ptr @test47(ptr %I, i64 %C, i64 %D) {
1206 ; CHECK-LABEL: @test47(
1207 ; CHECK-NEXT: [[B:%.*]] = getelementptr i32, ptr [[I:%.*]], i64 [[D:%.*]]
1208 ; CHECK-NEXT: ret ptr [[B]]
1210 %sub = sub i64 %D, %C
1211 %A = getelementptr i32, ptr %I, i64 %C
1212 %B = getelementptr i32, ptr %A, i64 %sub
1216 define ptr @test48(ptr %I, i64 %C, i64 %D) {
1217 ; CHECK-LABEL: @test48(
1218 ; CHECK-NEXT: [[B:%.*]] = getelementptr i32, ptr [[I:%.*]], i64 [[D:%.*]]
1219 ; CHECK-NEXT: ret ptr [[B]]
1221 %sub = sub i64 %D, %C
1222 %A = getelementptr i32, ptr %I, i64 %sub
1223 %B = getelementptr i32, ptr %A, i64 %C
1227 define ptr @test49(ptr %I, i64 %C) {
1228 ; CHECK-LABEL: @test49(
1229 ; CHECK-NEXT: [[B:%.*]] = getelementptr i8, ptr [[I:%.*]], i64 -4
1230 ; CHECK-NEXT: ret ptr [[B]]
1232 %notC = xor i64 -1, %C
1233 %A = getelementptr i32, ptr %I, i64 %C
1234 %B = getelementptr i32, ptr %A, i64 %notC
1238 define ptr addrspace(1) @ascast_0_gep(ptr %p) nounwind {
1239 ; CHECK-LABEL: @ascast_0_gep(
1240 ; CHECK-NEXT: [[X:%.*]] = addrspacecast ptr [[P:%.*]] to ptr addrspace(1)
1241 ; CHECK-NEXT: ret ptr addrspace(1) [[X]]
1243 %x = addrspacecast ptr %p to ptr addrspace(1)
1244 ret ptr addrspace(1) %x
1247 ; Do not merge the GEP and the addrspacecast, because it would undo the
1248 ; addrspacecast canonicalization.
1249 define ptr addrspace(1) @ascast_0_0_gep(ptr %p) nounwind {
1250 ; CHECK-LABEL: @ascast_0_0_gep(
1251 ; CHECK-NEXT: [[X:%.*]] = addrspacecast ptr [[P:%.*]] to ptr addrspace(1)
1252 ; CHECK-NEXT: ret ptr addrspace(1) [[X]]
1254 %x = addrspacecast ptr %p to ptr addrspace(1)
1255 ret ptr addrspace(1) %x
1258 define <2 x ptr> @PR32414(ptr %ptr) {
1259 ; CHECK-LABEL: @PR32414(
1260 ; CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds i32, ptr [[PTR:%.*]], <2 x i64> <i64 0, i64 1>
1261 ; CHECK-NEXT: ret <2 x ptr> [[T1]]
1263 %t1 = getelementptr inbounds i32, ptr %ptr, <2 x i64> <i64 0, i64 1>
1267 define ptr @test_bitcast_nzgep(ptr %base, i64 %idx) {
1268 ; CHECK-LABEL: @test_bitcast_nzgep(
1269 ; CHECK-NEXT: [[PTR:%.*]] = getelementptr inbounds i32, ptr [[BASE:%.*]], i64 [[IDX:%.*]]
1270 ; CHECK-NEXT: ret ptr [[PTR]]
1272 %ptr = getelementptr inbounds i32, ptr %base, i64 %idx
1276 define ptr @test_zgep_nzgep(ptr %base, i64 %idx) {
1277 ; CHECK-LABEL: @test_zgep_nzgep(
1278 ; CHECK-NEXT: [[PTR:%.*]] = getelementptr inbounds i32, ptr [[BASE:%.*]], i64 [[IDX:%.*]]
1279 ; CHECK-NEXT: ret ptr [[PTR]]
1281 %ptr = getelementptr inbounds i32, ptr %base, i64 %idx
1285 define ptr @test_nzgep_zgep(ptr %base, i64 %idx) {
1286 ; CHECK-LABEL: @test_nzgep_zgep(
1287 ; CHECK-NEXT: [[BASE2:%.*]] = getelementptr inbounds [1 x i32], ptr [[BASE:%.*]], i64 [[IDX:%.*]]
1288 ; CHECK-NEXT: ret ptr [[BASE2]]
1290 %base2 = getelementptr inbounds [1 x i32], ptr %base, i64 %idx
1294 define ptr @test_gep_inbounds_of_gep(ptr %base) {
1295 ; CHECK-LABEL: @test_gep_inbounds_of_gep(
1296 ; CHECK-NEXT: [[PTR2:%.*]] = getelementptr i8, ptr [[BASE:%.*]], i64 32
1297 ; CHECK-NEXT: ret ptr [[PTR2]]
1299 %ptr1 = getelementptr i32, ptr %base, i64 4
1300 %ptr2 = getelementptr inbounds i32, ptr %ptr1, i64 4
1304 %struct.f = type { i32 }
1306 @g0 = internal unnamed_addr constant %struct.f zeroinitializer, align 4
1307 @g1 = internal unnamed_addr constant %struct.f { i32 -1 }, align 4
1309 define ptr @PR45084(i1 %cond) {
1310 ; CHECK-LABEL: @PR45084(
1311 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[COND:%.*]], ptr @g0, ptr @g1, !prof [[PROF0:![0-9]+]]
1312 ; CHECK-NEXT: ret ptr [[SEL]]
1314 %sel = select i1 %cond, ptr @g0, ptr @g1, !prof !0
1318 define ptr @PR45084_extra_use(i1 %cond, ptr %p) {
1319 ; CHECK-LABEL: @PR45084_extra_use(
1320 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[COND:%.*]], ptr @g0, ptr @g1
1321 ; CHECK-NEXT: store ptr [[SEL]], ptr [[P:%.*]], align 8
1322 ; CHECK-NEXT: ret ptr [[SEL]]
1324 %sel = select i1 %cond, ptr @g0, ptr @g1
1325 store ptr %sel, ptr %p
1329 define ptr @gep_null_inbounds(i64 %idx) {
1330 ; CHECK-LABEL: @gep_null_inbounds(
1331 ; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr null, i64 [[IDX:%.*]]
1332 ; CHECK-NEXT: ret ptr [[GEP]]
1334 %gep = getelementptr inbounds i8, ptr null, i64 %idx
1338 define ptr @gep_null_not_inbounds(i64 %idx) {
1339 ; CHECK-LABEL: @gep_null_not_inbounds(
1340 ; CHECK-NEXT: [[GEP:%.*]] = getelementptr i8, ptr null, i64 [[IDX:%.*]]
1341 ; CHECK-NEXT: ret ptr [[GEP]]
1343 %gep = getelementptr i8, ptr null, i64 %idx
1347 define ptr @gep_null_defined(i64 %idx) null_pointer_is_valid {
1348 ; CHECK-LABEL: @gep_null_defined(
1349 ; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr null, i64 [[IDX:%.*]]
1350 ; CHECK-NEXT: ret ptr [[GEP]]
1352 %gep = getelementptr inbounds i8, ptr null, i64 %idx
1356 define ptr @gep_null_inbounds_different_type(i64 %idx1, i64 %idx2) {
1357 ; CHECK-LABEL: @gep_null_inbounds_different_type(
1358 ; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds [0 x i8], ptr null, i64 0, i64 [[IDX2:%.*]]
1359 ; CHECK-NEXT: ret ptr [[GEP]]
1361 %gep = getelementptr inbounds [0 x i8], ptr null, i64 %idx1, i64 %idx2
1365 define ptr @D98588(ptr %c1, i64 %offset) {
1366 ; CHECK-LABEL: @D98588(
1367 ; CHECK-NEXT: [[C2_NEXT_IDX:%.*]] = shl nsw i64 [[OFFSET:%.*]], 3
1368 ; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[C1:%.*]], i64 [[C2_NEXT_IDX]]
1369 ; CHECK-NEXT: ret ptr [[GEP]]
1371 %c2_next = getelementptr inbounds i64, ptr %c1, i64 %offset
1372 %ptrtoint1 = ptrtoint ptr %c1 to i64
1373 %ptrtoint2 = ptrtoint ptr %c2_next to i64
1374 %sub = sub i64 %ptrtoint2, %ptrtoint1 ; C2 - C1
1375 %gep = getelementptr inbounds i8, ptr %c1, i64 %sub ; C1 + (C2 - C1)
1379 declare noalias ptr @malloc(i64) nounwind allockind("alloc,uninitialized") allocsize(0)
1381 define i32 @test_gep_bitcast_malloc(ptr %a) {
1382 ; CHECK-LABEL: @test_gep_bitcast_malloc(
1383 ; CHECK-NEXT: entry:
1384 ; CHECK-NEXT: [[CALL:%.*]] = call noalias dereferenceable_or_null(16) ptr @malloc(i64 16)
1385 ; CHECK-NEXT: [[G3:%.*]] = getelementptr i8, ptr [[CALL]], i64 12
1386 ; CHECK-NEXT: [[A_C:%.*]] = load i32, ptr [[G3]], align 4
1387 ; CHECK-NEXT: ret i32 [[A_C]]
1390 %call = call noalias ptr @malloc(i64 16) #2
1391 %g3 = getelementptr %struct.A, ptr %call, i32 0, i32 2
1392 %a_c = load i32, ptr %g3, align 4
1396 define ptr @gep_of_gep_multiuse_const_and_const(ptr %p, i64 %idx) {
1397 ; CHECK-LABEL: @gep_of_gep_multiuse_const_and_const(
1398 ; CHECK-NEXT: [[GEP1:%.*]] = getelementptr i8, ptr [[P:%.*]], i64 8
1399 ; CHECK-NEXT: call void @use(ptr [[GEP1]])
1400 ; CHECK-NEXT: [[GEP2:%.*]] = getelementptr i8, ptr [[P]], i64 12
1401 ; CHECK-NEXT: ret ptr [[GEP2]]
1403 %gep1 = getelementptr { i32, i32 }, ptr %p, i64 1
1404 call void @use(ptr %gep1)
1405 %gep2 = getelementptr { i32, i32 }, ptr %gep1, i64 0, i32 1
1409 define ptr @gep_of_gep_multiuse_var_and_const(ptr %p, i64 %idx) {
1410 ; CHECK-LABEL: @gep_of_gep_multiuse_var_and_const(
1411 ; CHECK-NEXT: [[GEP1:%.*]] = getelementptr { i32, i32 }, ptr [[P:%.*]], i64 [[IDX:%.*]]
1412 ; CHECK-NEXT: call void @use(ptr [[GEP1]])
1413 ; CHECK-NEXT: [[GEP2:%.*]] = getelementptr i8, ptr [[GEP1]], i64 4
1414 ; CHECK-NEXT: ret ptr [[GEP2]]
1416 %gep1 = getelementptr { i32, i32 }, ptr %p, i64 %idx
1417 call void @use(ptr %gep1)
1418 %gep2 = getelementptr { i32, i32 }, ptr %gep1, i64 0, i32 1
1422 define ptr @gep_of_gep_multiuse_var_and_var(ptr %p, i64 %idx, i64 %idx2) {
1423 ; CHECK-LABEL: @gep_of_gep_multiuse_var_and_var(
1424 ; CHECK-NEXT: [[GEP1:%.*]] = getelementptr [4 x i32], ptr [[P:%.*]], i64 [[IDX:%.*]]
1425 ; CHECK-NEXT: call void @use(ptr [[GEP1]])
1426 ; CHECK-NEXT: [[GEP2:%.*]] = getelementptr [4 x i32], ptr [[P]], i64 [[IDX]], i64 [[IDX2:%.*]]
1427 ; CHECK-NEXT: ret ptr [[GEP2]]
1429 %gep1 = getelementptr [4 x i32], ptr %p, i64 %idx
1430 call void @use(ptr %gep1)
1431 %gep2 = getelementptr [4 x i32], ptr %gep1, i64 0, i64 %idx2
1435 @g_i32_di = global i32 0
1436 @g_i32_e = external global i32
1437 @g_i32_ew = extern_weak global i32
1438 @g_0xi8_e = external global [0 x i8]
1440 define ptr @const_gep_global_di_i8_smaller() {
1441 ; CHECK-LABEL: @const_gep_global_di_i8_smaller(
1442 ; CHECK-NEXT: ret ptr getelementptr inbounds (i8, ptr @g_i32_di, i64 3)
1444 ret ptr getelementptr (i8, ptr @g_i32_di, i64 3)
1447 define ptr @const_gep_global_di_i8_exact() {
1448 ; CHECK-LABEL: @const_gep_global_di_i8_exact(
1449 ; CHECK-NEXT: ret ptr getelementptr inbounds (i8, ptr @g_i32_di, i64 4)
1451 ret ptr getelementptr (i8, ptr @g_i32_di, i64 4)
1454 define ptr @const_gep_global_di_i8_larger() {
1455 ; CHECK-LABEL: @const_gep_global_di_i8_larger(
1456 ; CHECK-NEXT: ret ptr getelementptr (i8, ptr @g_i32_di, i64 5)
1458 ret ptr getelementptr (i8, ptr @g_i32_di, i64 5)
1461 define ptr @const_gep_global_di_i64_larger() {
1462 ; CHECK-LABEL: @const_gep_global_di_i64_larger(
1463 ; CHECK-NEXT: ret ptr getelementptr (i8, ptr @g_i32_di, i64 8)
1465 ret ptr getelementptr (i64, ptr @g_i32_di, i64 1)
1468 define ptr @const_gep_global_e_smaller() {
1469 ; CHECK-LABEL: @const_gep_global_e_smaller(
1470 ; CHECK-NEXT: ret ptr getelementptr inbounds (i8, ptr @g_i32_e, i64 3)
1472 ret ptr getelementptr (i8, ptr @g_i32_e, i64 3)
1475 define ptr @const_gep_global_e_exact() {
1476 ; CHECK-LABEL: @const_gep_global_e_exact(
1477 ; CHECK-NEXT: ret ptr getelementptr inbounds (i8, ptr @g_i32_e, i64 4)
1479 ret ptr getelementptr (i8, ptr @g_i32_e, i64 4)
1482 define ptr @const_gep_global_e_larger() {
1483 ; CHECK-LABEL: @const_gep_global_e_larger(
1484 ; CHECK-NEXT: ret ptr getelementptr (i8, ptr @g_i32_e, i64 5)
1486 ret ptr getelementptr (i8, ptr @g_i32_e, i64 5)
1489 define ptr @const_gep_global_ew_smaller() {
1490 ; CHECK-LABEL: @const_gep_global_ew_smaller(
1491 ; CHECK-NEXT: ret ptr getelementptr (i8, ptr @g_i32_ew, i64 3)
1493 ret ptr getelementptr (i8, ptr @g_i32_ew, i64 3)
1496 define ptr @const_gep_global_ew_exact() {
1497 ; CHECK-LABEL: @const_gep_global_ew_exact(
1498 ; CHECK-NEXT: ret ptr getelementptr (i8, ptr @g_i32_ew, i64 4)
1500 ret ptr getelementptr (i8, ptr @g_i32_ew, i64 4)
1503 define ptr @const_gep_global_ew_larger() {
1504 ; CHECK-LABEL: @const_gep_global_ew_larger(
1505 ; CHECK-NEXT: ret ptr getelementptr (i8, ptr @g_i32_ew, i64 5)
1507 ret ptr getelementptr (i8, ptr @g_i32_ew, i64 5)
1510 define ptr @const_gep_0xi8_global() {
1511 ; CHECK-LABEL: @const_gep_0xi8_global(
1512 ; CHECK-NEXT: ret ptr getelementptr (i8, ptr @g_0xi8_e, i64 10)
1514 ret ptr getelementptr ([0 x i8], ptr @g_0xi8_e, i64 0, i64 10)
1517 define ptr @const_gep_chain(ptr %p, i64 %a) {
1518 ; CHECK-LABEL: @const_gep_chain(
1519 ; CHECK-NEXT: [[P1:%.*]] = getelementptr inbounds i8, ptr [[P:%.*]], i64 [[A:%.*]]
1520 ; CHECK-NEXT: [[P4:%.*]] = getelementptr inbounds i8, ptr [[P1]], i64 6
1521 ; CHECK-NEXT: ret ptr [[P4]]
1523 %p1 = getelementptr inbounds i8, ptr %p, i64 %a
1524 %p2 = getelementptr inbounds i8, ptr %p1, i64 1
1525 %p3 = getelementptr inbounds i8, ptr %p2, i64 2
1526 %p4 = getelementptr inbounds i8, ptr %p3, i64 3
1530 define ptr @gep_sdiv(ptr %p, i64 %off) {
1531 ; CHECK-LABEL: @gep_sdiv(
1532 ; CHECK-NEXT: [[PTR:%.*]] = getelementptr i8, ptr [[P:%.*]], i64 [[OFF:%.*]]
1533 ; CHECK-NEXT: ret ptr [[PTR]]
1535 %index = sdiv exact i64 %off, 7
1536 %ptr = getelementptr %struct.C, ptr %p, i64 %index
1540 define ptr @gep_udiv(ptr %p, i64 %off) {
1541 ; CHECK-LABEL: @gep_udiv(
1542 ; CHECK-NEXT: [[PTR:%.*]] = getelementptr i8, ptr [[P:%.*]], i64 [[OFF:%.*]]
1543 ; CHECK-NEXT: ret ptr [[PTR]]
1545 %index = udiv exact i64 %off, 7
1546 %ptr = getelementptr %struct.C, ptr %p, i64 %index
1550 define <2 x ptr> @gep_sdiv_vec(<2 x ptr> %p, <2 x i64> %off) {
1551 ; CHECK-LABEL: @gep_sdiv_vec(
1552 ; CHECK-NEXT: [[PTR:%.*]] = getelementptr i8, <2 x ptr> [[P:%.*]], <2 x i64> [[OFF:%.*]]
1553 ; CHECK-NEXT: ret <2 x ptr> [[PTR]]
1555 %index = sdiv exact <2 x i64> %off, <i64 7, i64 7>
1556 %ptr = getelementptr %struct.C, <2 x ptr> %p, <2 x i64> %index
1560 define ptr @gep_sdiv_inbounds(ptr %p, i64 %off) {
1561 ; CHECK-LABEL: @gep_sdiv_inbounds(
1562 ; CHECK-NEXT: [[PTR:%.*]] = getelementptr inbounds i8, ptr [[P:%.*]], i64 [[OFF:%.*]]
1563 ; CHECK-NEXT: ret ptr [[PTR]]
1565 %index = sdiv exact i64 %off, 7
1566 %ptr = getelementptr inbounds %struct.C, ptr %p, i64 %index
1570 define ptr @gep_sdiv_nuw(ptr %p, i64 %off) {
1571 ; CHECK-LABEL: @gep_sdiv_nuw(
1572 ; CHECK-NEXT: [[PTR:%.*]] = getelementptr nuw i8, ptr [[P:%.*]], i64 [[OFF:%.*]]
1573 ; CHECK-NEXT: ret ptr [[PTR]]
1575 %index = sdiv exact i64 %off, 7
1576 %ptr = getelementptr nuw %struct.C, ptr %p, i64 %index
1580 define ptr @gep_ashr(ptr %p, i64 %off) {
1581 ; CHECK-LABEL: @gep_ashr(
1582 ; CHECK-NEXT: [[PTR:%.*]] = getelementptr i8, ptr [[P:%.*]], i64 [[OFF:%.*]]
1583 ; CHECK-NEXT: ret ptr [[PTR]]
1585 %index = ashr exact i64 %off, 2
1586 %ptr = getelementptr i32, ptr %p, i64 %index
1590 define ptr @gep_lshr(ptr %p, i64 %off) {
1591 ; CHECK-LABEL: @gep_lshr(
1592 ; CHECK-NEXT: [[PTR:%.*]] = getelementptr i8, ptr [[P:%.*]], i64 [[OFF:%.*]]
1593 ; CHECK-NEXT: ret ptr [[PTR]]
1595 %index = lshr exact i64 %off, 2
1596 %ptr = getelementptr i32, ptr %p, i64 %index
1602 define ptr @gep_i8(ptr %p, i64 %off) {
1603 ; CHECK-LABEL: @gep_i8(
1604 ; CHECK-NEXT: [[PTR:%.*]] = getelementptr i8, ptr [[P:%.*]], i64 [[OFF:%.*]]
1605 ; CHECK-NEXT: ret ptr [[PTR]]
1607 %ptr = getelementptr i8, ptr %p, i64 %off
1611 define ptr @gep_sdiv_mismatched_size(ptr %p, i64 %off) {
1612 ; CHECK-LABEL: @gep_sdiv_mismatched_size(
1613 ; CHECK-NEXT: [[INDEX:%.*]] = sdiv exact i64 [[OFF:%.*]], 20
1614 ; CHECK-NEXT: [[PTR:%.*]] = getelementptr [[STRUCT_C:%.*]], ptr [[P:%.*]], i64 [[INDEX]]
1615 ; CHECK-NEXT: ret ptr [[PTR]]
1617 %index = sdiv exact i64 %off, 20
1618 %ptr = getelementptr %struct.C, ptr %p, i64 %index
1622 define ptr @gep_udiv_mismatched_size(ptr %p, i64 %off) {
1623 ; CHECK-LABEL: @gep_udiv_mismatched_size(
1624 ; CHECK-NEXT: [[INDEX:%.*]] = udiv exact i64 [[OFF:%.*]], 20
1625 ; CHECK-NEXT: [[PTR:%.*]] = getelementptr [[STRUCT_C:%.*]], ptr [[P:%.*]], i64 [[INDEX]]
1626 ; CHECK-NEXT: ret ptr [[PTR]]
1628 %index = udiv exact i64 %off, 20
1629 %ptr = getelementptr %struct.C, ptr %p, i64 %index
1633 define ptr @gep_sdiv_without_exact(ptr %p, i64 %off) {
1634 ; CHECK-LABEL: @gep_sdiv_without_exact(
1635 ; CHECK-NEXT: [[INDEX:%.*]] = sdiv i64 [[OFF:%.*]], 7
1636 ; CHECK-NEXT: [[PTR:%.*]] = getelementptr [[STRUCT_C:%.*]], ptr [[P:%.*]], i64 [[INDEX]]
1637 ; CHECK-NEXT: ret ptr [[PTR]]
1639 %index = sdiv i64 %off, 7
1640 %ptr = getelementptr %struct.C, ptr %p, i64 %index
1644 define ptr @gep_udiv_without_exact(ptr %p, i64 %off) {
1645 ; CHECK-LABEL: @gep_udiv_without_exact(
1646 ; CHECK-NEXT: [[INDEX:%.*]] = udiv i64 [[OFF:%.*]], 7
1647 ; CHECK-NEXT: [[PTR:%.*]] = getelementptr [[STRUCT_C:%.*]], ptr [[P:%.*]], i64 [[INDEX]]
1648 ; CHECK-NEXT: ret ptr [[PTR]]
1650 %index = udiv i64 %off, 7
1651 %ptr = getelementptr %struct.C, ptr %p, i64 %index
1655 define ptr @gep_ashr_without_exact(ptr %p, i64 %off) {
1656 ; CHECK-LABEL: @gep_ashr_without_exact(
1657 ; CHECK-NEXT: [[INDEX:%.*]] = ashr i64 [[OFF:%.*]], 2
1658 ; CHECK-NEXT: [[PTR:%.*]] = getelementptr i32, ptr [[P:%.*]], i64 [[INDEX]]
1659 ; CHECK-NEXT: ret ptr [[PTR]]
1661 %index = ashr i64 %off, 2
1662 %ptr = getelementptr i32, ptr %p, i64 %index
1666 define ptr @gep_lshr_without_exact(ptr %p, i64 %off) {
1667 ; CHECK-LABEL: @gep_lshr_without_exact(
1668 ; CHECK-NEXT: [[INDEX:%.*]] = lshr i64 [[OFF:%.*]], 2
1669 ; CHECK-NEXT: [[PTR:%.*]] = getelementptr i32, ptr [[P:%.*]], i64 [[INDEX]]
1670 ; CHECK-NEXT: ret ptr [[PTR]]
1672 %index = lshr i64 %off, 2
1673 %ptr = getelementptr i32, ptr %p, i64 %index
1677 define i1 @test_only_used_by_icmp(ptr %a, ptr %b, ptr %c) {
1678 ; CHECK-LABEL: @test_only_used_by_icmp(
1679 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq ptr [[B:%.*]], [[C:%.*]]
1680 ; CHECK-NEXT: ret i1 [[CMP]]
1682 %pa = ptrtoint ptr %a to i64
1683 %pb = ptrtoint ptr %b to i64
1684 %sub = sub i64 %pb, %pa
1685 %gep = getelementptr i8, ptr %a, i64 %sub
1686 %cmp = icmp eq ptr %gep, %c
1690 define i64 @test_only_used_by_ptrtoint(ptr %a, ptr %b) {
1691 ; CHECK-LABEL: @test_only_used_by_ptrtoint(
1692 ; CHECK-NEXT: [[VAL:%.*]] = ptrtoint ptr [[B:%.*]] to i64
1693 ; CHECK-NEXT: ret i64 [[VAL]]
1695 %pa = ptrtoint ptr %a to i64
1696 %pb = ptrtoint ptr %b to i64
1697 %sub = sub i64 %pb, %pa
1698 %gep = getelementptr i8, ptr %a, i64 %sub
1699 %val = ptrtoint ptr %gep to i64
1703 define i64 @test_used_by_both(ptr %a, ptr %b, ptr %c) {
1704 ; CHECK-LABEL: @test_used_by_both(
1705 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq ptr [[B:%.*]], [[C:%.*]]
1706 ; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
1708 ; CHECK-NEXT: [[VAL:%.*]] = ptrtoint ptr [[B]] to i64
1709 ; CHECK-NEXT: ret i64 [[VAL]]
1711 ; CHECK-NEXT: ret i64 0
1713 %pa = ptrtoint ptr %a to i64
1714 %pb = ptrtoint ptr %b to i64
1715 %sub = sub i64 %pb, %pa
1716 %gep = getelementptr i8, ptr %a, i64 %sub
1717 %cmp = icmp eq ptr %gep, %c
1718 br i1 %cmp, label %if.then, label %if.else
1720 %val = ptrtoint ptr %gep to i64
1728 define i64 @test_used_by_both_invalid(ptr %a, ptr %b, ptr %c) {
1729 ; CHECK-LABEL: @test_used_by_both_invalid(
1730 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq ptr [[B:%.*]], [[C:%.*]]
1731 ; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
1733 ; CHECK-NEXT: [[PB:%.*]] = ptrtoint ptr [[B]] to i64
1734 ; CHECK-NEXT: [[PA:%.*]] = ptrtoint ptr [[A:%.*]] to i64
1735 ; CHECK-NEXT: [[SUB:%.*]] = sub i64 [[PB]], [[PA]]
1736 ; CHECK-NEXT: [[GEP:%.*]] = getelementptr i8, ptr [[A]], i64 [[SUB]]
1737 ; CHECK-NEXT: [[VAL:%.*]] = load i64, ptr [[GEP]], align 8
1738 ; CHECK-NEXT: ret i64 [[VAL]]
1740 ; CHECK-NEXT: ret i64 0
1742 %pa = ptrtoint ptr %a to i64
1743 %pb = ptrtoint ptr %b to i64
1744 %sub = sub i64 %pb, %pa
1745 %gep = getelementptr i8, ptr %a, i64 %sub
1746 %cmp = icmp eq ptr %gep, %c
1747 br i1 %cmp, label %if.then, label %if.else
1749 %val = load i64, ptr %gep, align 8
1756 @g = external global i8
1758 define ptr @constexpr_gep_of_gep_with_narrow_type() {
1759 ; CHECK-LABEL: @constexpr_gep_of_gep_with_narrow_type(
1760 ; CHECK-NEXT: ret ptr getelementptr (i8, ptr @g, i64 254)
1762 ret ptr getelementptr (i8, ptr getelementptr (i8, ptr @g, i8 127), i8 127)
1765 define ptr @gep_to_i8_nusw_nuw(ptr %p) {
1766 ; CHECK-LABEL: @gep_to_i8_nusw_nuw(
1767 ; CHECK-NEXT: [[GEP:%.*]] = getelementptr nusw nuw i8, ptr [[P:%.*]], i64 4
1768 ; CHECK-NEXT: ret ptr [[GEP]]
1770 %gep = getelementptr nusw nuw i32, ptr %p, i64 1
1774 define ptr @gep_sel_const(i1 %c) {
1775 ; CHECK-LABEL: @gep_sel_const(
1776 ; CHECK-NEXT: [[GEP:%.*]] = select i1 [[C:%.*]], ptr getelementptr (i8, ptr @A, i64 5), ptr getelementptr (i8, ptr @B, i64 5)
1777 ; CHECK-NEXT: ret ptr [[GEP]]
1779 %sel = select i1 %c, ptr @A, ptr @B
1780 %gep = getelementptr i8, ptr %sel, i64 5
1784 define ptr @gep_sel_const_nuw(i1 %c) {
1785 ; CHECK-LABEL: @gep_sel_const_nuw(
1786 ; CHECK-NEXT: [[GEP:%.*]] = select i1 [[C:%.*]], ptr getelementptr nuw (i8, ptr @A, i64 5), ptr getelementptr nuw (i8, ptr @B, i64 5)
1787 ; CHECK-NEXT: ret ptr [[GEP]]
1789 %sel = select i1 %c, ptr @A, ptr @B
1790 %gep = getelementptr nuw i8, ptr %sel, i64 5
1794 define ptr @gep_of_udiv(ptr %p, i64 %x) {
1795 ; CHECK-LABEL: @gep_of_udiv(
1796 ; CHECK-NEXT: [[TMP1:%.*]] = udiv exact i64 [[X:%.*]], 3
1797 ; CHECK-NEXT: [[R:%.*]] = getelementptr i8, ptr [[P:%.*]], i64 [[TMP1]]
1798 ; CHECK-NEXT: ret ptr [[R]]
1800 %idx = udiv exact i64 %x, 12
1801 %r = getelementptr i32, ptr %p, i64 %idx
1805 define ptr @gep_of_udiv_fail_not_divisible(ptr %p, i64 %x) {
1806 ; CHECK-LABEL: @gep_of_udiv_fail_not_divisible(
1807 ; CHECK-NEXT: [[IDX:%.*]] = udiv exact i64 [[X:%.*]], 13
1808 ; CHECK-NEXT: [[R:%.*]] = getelementptr i32, ptr [[P:%.*]], i64 [[IDX]]
1809 ; CHECK-NEXT: ret ptr [[R]]
1811 %idx = udiv exact i64 %x, 13
1812 %r = getelementptr i32, ptr %p, i64 %idx
1817 define ptr @gep_of_sdiv(ptr %p, i64 %x) {
1818 ; CHECK-LABEL: @gep_of_sdiv(
1819 ; CHECK-NEXT: [[TMP1:%.*]] = sdiv exact i64 [[X:%.*]], -9
1820 ; CHECK-NEXT: [[R:%.*]] = getelementptr nusw nuw i8, ptr [[P:%.*]], i64 [[TMP1]]
1821 ; CHECK-NEXT: ret ptr [[R]]
1823 %idx = sdiv exact i64 %x, -36
1824 %r = getelementptr nusw nuw i32, ptr %p, i64 %idx
1829 define ptr @gep_of_sdiv_fail_not_divisible(ptr %p, i64 %x) {
1830 ; CHECK-LABEL: @gep_of_sdiv_fail_not_divisible(
1831 ; CHECK-NEXT: [[IDX:%.*]] = sdiv exact i64 [[X:%.*]], -35
1832 ; CHECK-NEXT: [[R:%.*]] = getelementptr i32, ptr [[P:%.*]], i64 [[IDX]]
1833 ; CHECK-NEXT: ret ptr [[R]]
1835 %idx = sdiv exact i64 %x, -35
1836 %r = getelementptr i32, ptr %p, i64 %idx
1840 define ptr @gep_of_sdiv_fail_ub(ptr %p, i64 %x) {
1841 ; CHECK-LABEL: @gep_of_sdiv_fail_ub(
1842 ; CHECK-NEXT: [[IDX:%.*]] = sdiv i64 [[X:%.*]], -4
1843 ; CHECK-NEXT: [[R:%.*]] = getelementptr i32, ptr [[P:%.*]], i64 [[IDX]]
1844 ; CHECK-NEXT: ret ptr [[R]]
1846 %idx = sdiv i64 %x, -4
1847 %r = getelementptr i32, ptr %p, i64 %idx
1851 define ptr @gep_of_lshr(ptr %p, i64 %x) {
1852 ; CHECK-LABEL: @gep_of_lshr(
1853 ; CHECK-NEXT: [[TMP1:%.*]] = lshr exact i64 [[X:%.*]], 1
1854 ; CHECK-NEXT: [[R:%.*]] = getelementptr i8, ptr [[P:%.*]], i64 [[TMP1]]
1855 ; CHECK-NEXT: ret ptr [[R]]
1857 %idx = lshr exact i64 %x, 3
1858 %r = getelementptr i32, ptr %p, i64 %idx
1862 define ptr @gep_of_ashr(ptr %p, i64 %x) {
1863 ; CHECK-LABEL: @gep_of_ashr(
1864 ; CHECK-NEXT: [[TMP1:%.*]] = ashr exact i64 [[X:%.*]], 1
1865 ; CHECK-NEXT: [[R:%.*]] = getelementptr inbounds i8, ptr [[P:%.*]], i64 [[TMP1]]
1866 ; CHECK-NEXT: ret ptr [[R]]
1868 %idx = ashr exact i64 %x, 3
1869 %r = getelementptr inbounds i32, ptr %p, i64 %idx
1873 define ptr @gep_of_ashr_fail_multiuse(ptr %p, i64 %x) {
1874 ; CHECK-LABEL: @gep_of_ashr_fail_multiuse(
1875 ; CHECK-NEXT: [[IDX:%.*]] = ashr exact i64 [[X:%.*]], 3
1876 ; CHECK-NEXT: call void @use.i64(i64 [[IDX]])
1877 ; CHECK-NEXT: [[R:%.*]] = getelementptr inbounds i32, ptr [[P:%.*]], i64 [[IDX]]
1878 ; CHECK-NEXT: ret ptr [[R]]
1880 %idx = ashr exact i64 %x, 3
1881 call void @use.i64(i64 %idx)
1882 %r = getelementptr inbounds i32, ptr %p, i64 %idx
1886 define ptr @gep_of_lshr_fail_missing_exact(ptr %p, i64 %x) {
1887 ; CHECK-LABEL: @gep_of_lshr_fail_missing_exact(
1888 ; CHECK-NEXT: [[IDX:%.*]] = lshr i64 [[X:%.*]], 3
1889 ; CHECK-NEXT: [[R:%.*]] = getelementptr i32, ptr [[P:%.*]], i64 [[IDX]]
1890 ; CHECK-NEXT: ret ptr [[R]]
1892 %idx = lshr i64 %x, 3
1893 %r = getelementptr i32, ptr %p, i64 %idx
1897 define ptr @gep_of_ashr_fail_not_divisible(ptr %p, i64 %x) {
1898 ; CHECK-LABEL: @gep_of_ashr_fail_not_divisible(
1899 ; CHECK-NEXT: [[IDX:%.*]] = ashr exact i64 [[X:%.*]], 1
1900 ; CHECK-NEXT: [[R:%.*]] = getelementptr i32, ptr [[P:%.*]], i64 [[IDX]]
1901 ; CHECK-NEXT: ret ptr [[R]]
1903 %idx = ashr exact i64 %x, 1
1904 %r = getelementptr i32, ptr %p, i64 %idx
1908 define ptr @gep_merge_not_nuw(ptr %p, i64 %idx) {
1909 ; CHECK-LABEL: @gep_merge_not_nuw(
1910 ; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[P:%.*]], i64 -1
1911 ; CHECK-NEXT: ret ptr [[GEP]]
1913 %idx.neg = sub i64 0, %idx
1914 %add = add i64 %idx, -1
1915 %gep1 = getelementptr inbounds i8, ptr %p, i64 %idx.neg
1916 %gep = getelementptr inbounds nuw i8, ptr %gep1, i64 %add
1920 define ptr @gep_merge_nuw(ptr %p, i64 %x, i64 %y) {
1921 ; CHECK-LABEL: @gep_merge_nuw(
1922 ; CHECK-NEXT: [[GEP:%.*]] = getelementptr nuw i8, ptr [[P:%.*]], i64 [[Y:%.*]]
1923 ; CHECK-NEXT: ret ptr [[GEP]]
1925 %sub = sub i64 %y, %x
1926 %gep1 = getelementptr nuw i8, ptr %p, i64 %x
1927 %gep = getelementptr nuw i8, ptr %gep1, i64 %sub
1931 define ptr @gep_merge_nuw_only_one1(ptr %p, i64 %x, i64 %y) {
1932 ; CHECK-LABEL: @gep_merge_nuw_only_one1(
1933 ; CHECK-NEXT: [[GEP:%.*]] = getelementptr i8, ptr [[P:%.*]], i64 [[Y:%.*]]
1934 ; CHECK-NEXT: ret ptr [[GEP]]
1936 %sub = sub i64 %y, %x
1937 %gep1 = getelementptr i8, ptr %p, i64 %x
1938 %gep = getelementptr nuw i8, ptr %gep1, i64 %sub
1942 define ptr @gep_merge_nuw_only_one2(ptr %p, i64 %x, i64 %y) {
1943 ; CHECK-LABEL: @gep_merge_nuw_only_one2(
1944 ; CHECK-NEXT: [[GEP:%.*]] = getelementptr i8, ptr [[P:%.*]], i64 [[Y:%.*]]
1945 ; CHECK-NEXT: ret ptr [[GEP]]
1947 %sub = sub i64 %y, %x
1948 %gep1 = getelementptr nuw i8, ptr %p, i64 %x
1949 %gep = getelementptr i8, ptr %gep1, i64 %sub
1953 ; Cannot preserve nusw, unless we know that the addition x + (y-x)
1954 ; does not overflow.
1955 define ptr @gep_merge_nusw(ptr %p, i64 %x, i64 %y) {
1956 ; CHECK-LABEL: @gep_merge_nusw(
1957 ; CHECK-NEXT: [[GEP:%.*]] = getelementptr i8, ptr [[P:%.*]], i64 [[Y:%.*]]
1958 ; CHECK-NEXT: ret ptr [[GEP]]
1960 %sub = sub i64 %y, %x
1961 %gep1 = getelementptr nusw i8, ptr %p, i64 %x
1962 %gep = getelementptr nusw i8, ptr %gep1, i64 %sub
1966 define ptr @gep_merge_nuw_add_zero(ptr %p, i64 %idx, i64 %idx2) {
1967 ; CHECK-LABEL: @gep_merge_nuw_add_zero(
1968 ; CHECK-NEXT: [[GEP:%.*]] = getelementptr nuw [2 x i32], ptr [[P:%.*]], i64 [[IDX:%.*]], i64 [[IDX2:%.*]]
1969 ; CHECK-NEXT: ret ptr [[GEP]]
1971 %gep1 = getelementptr nuw [2 x i32], ptr %p, i64 %idx
1972 %gep = getelementptr nuw [2 x i32], ptr %gep1, i64 0, i64 %idx2
1976 ; Cannot preserve nusw, even if the merge only involves an add with a zero
1977 ; index. This is because the whole offset calculation is required to be nsw
1979 define ptr @gep_merge_nusw_add_zero(ptr %p, i64 %idx, i64 %idx2) {
1980 ; CHECK-LABEL: @gep_merge_nusw_add_zero(
1981 ; CHECK-NEXT: [[GEP:%.*]] = getelementptr [2 x i32], ptr [[P:%.*]], i64 [[IDX:%.*]], i64 [[IDX2:%.*]]
1982 ; CHECK-NEXT: ret ptr [[GEP]]
1984 %gep1 = getelementptr nusw [2 x i32], ptr %p, i64 %idx
1985 %gep = getelementptr nusw [2 x i32], ptr %gep1, i64 0, i64 %idx2
1989 define ptr @gep_merge_nuw_const(ptr %p, i64 %idx, i64 %idx2) {
1990 ; CHECK-LABEL: @gep_merge_nuw_const(
1991 ; CHECK-NEXT: [[GEP:%.*]] = getelementptr nuw [2 x i32], ptr [[P:%.*]], i64 [[IDX:%.*]], i64 1
1992 ; CHECK-NEXT: ret ptr [[GEP]]
1994 %gep1 = getelementptr nuw [2 x i32], ptr %p, i64 %idx
1995 %gep = getelementptr nuw i8, ptr %gep1, i64 4
1999 define ptr @gep_merge_nuw_const_neg(ptr %p, i64 %idx, i64 %idx2) {
2000 ; CHECK-LABEL: @gep_merge_nuw_const_neg(
2001 ; CHECK-NEXT: [[GEP1:%.*]] = getelementptr nuw [2 x i32], ptr [[P:%.*]], i64 [[IDX:%.*]]
2002 ; CHECK-NEXT: [[GEP:%.*]] = getelementptr nuw i8, ptr [[GEP1]], i64 -4
2003 ; CHECK-NEXT: ret ptr [[GEP]]
2005 %gep1 = getelementptr nuw [2 x i32], ptr %p, i64 %idx
2006 %gep = getelementptr nuw i8, ptr %gep1, i64 -4
2010 ; Cannot preserve nusw, because we don't know that the new offset calculation
2011 ; does not overflow.
2012 define ptr @gep_merge_nusw_const(ptr %p, i64 %idx, i64 %idx2) {
2013 ; CHECK-LABEL: @gep_merge_nusw_const(
2014 ; CHECK-NEXT: [[GEP:%.*]] = getelementptr [2 x i32], ptr [[P:%.*]], i64 [[IDX:%.*]], i64 1
2015 ; CHECK-NEXT: ret ptr [[GEP]]
2017 %gep1 = getelementptr nusw [2 x i32], ptr %p, i64 %idx
2018 %gep = getelementptr nusw i8, ptr %gep1, i64 4
2023 !0 = !{!"branch_weights", i32 2, i32 10}