1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt -S -force-vector-width=4 -passes=loop-vectorize -mcpu=haswell < %s | FileCheck %s
4 ;; Basic functional tests for uniform loads and stores. These are cases kept
5 ;; deliberately simple (and unoptimized by other passes) to feed the vectorizer
6 ;; with particular input IR.
8 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
9 target triple = "x86_64-unknown-linux-gnu"
11 define i32 @uniform_load(ptr align(4) %addr) {
12 ; CHECK-LABEL: @uniform_load(
14 ; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
16 ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
18 ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
19 ; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[ADDR:%.*]], align 4
20 ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 16
21 ; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i64 [[INDEX_NEXT]], 4096
22 ; CHECK-NEXT: br i1 [[TMP1]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
23 ; CHECK: middle.block:
24 ; CHECK-NEXT: br i1 false, label [[LOOPEXIT:%.*]], label [[SCALAR_PH]]
26 ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 4096, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
27 ; CHECK-NEXT: br label [[FOR_BODY:%.*]]
29 ; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
30 ; CHECK-NEXT: [[LOAD:%.*]] = load i32, ptr [[ADDR]], align 4
31 ; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
32 ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV]], 4096
33 ; CHECK-NEXT: br i1 [[EXITCOND]], label [[LOOPEXIT]], label [[FOR_BODY]], !llvm.loop [[LOOP3:![0-9]+]]
35 ; CHECK-NEXT: [[LOAD_LCSSA:%.*]] = phi i32 [ [[LOAD]], [[FOR_BODY]] ], [ [[TMP0]], [[MIDDLE_BLOCK]] ]
36 ; CHECK-NEXT: ret i32 [[LOAD_LCSSA]]
42 %iv = phi i64 [ %iv.next, %for.body ], [ 0, %entry ]
43 %load = load i32, ptr %addr
44 %iv.next = add nuw nsw i64 %iv, 1
45 %exitcond = icmp eq i64 %iv, 4096
46 br i1 %exitcond, label %loopexit, label %for.body
52 define i32 @uniform_load2(ptr align(4) %addr) {
53 ; CHECK-LABEL: @uniform_load2(
55 ; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
57 ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
59 ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
60 ; CHECK-NEXT: [[VEC_PHI:%.*]] = phi <4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP1:%.*]], [[VECTOR_BODY]] ]
61 ; CHECK-NEXT: [[VEC_PHI1:%.*]] = phi <4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP2:%.*]], [[VECTOR_BODY]] ]
62 ; CHECK-NEXT: [[VEC_PHI2:%.*]] = phi <4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP3:%.*]], [[VECTOR_BODY]] ]
63 ; CHECK-NEXT: [[VEC_PHI3:%.*]] = phi <4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP4:%.*]], [[VECTOR_BODY]] ]
64 ; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[ADDR:%.*]], align 4
65 ; CHECK-NEXT: [[BROADCAST_SPLATINSERT8:%.*]] = insertelement <4 x i32> poison, i32 [[TMP0]], i64 0
66 ; CHECK-NEXT: [[BROADCAST_SPLAT9:%.*]] = shufflevector <4 x i32> [[BROADCAST_SPLATINSERT8]], <4 x i32> poison, <4 x i32> zeroinitializer
67 ; CHECK-NEXT: [[TMP1]] = add <4 x i32> [[VEC_PHI]], [[BROADCAST_SPLAT9]]
68 ; CHECK-NEXT: [[TMP2]] = add <4 x i32> [[VEC_PHI1]], [[BROADCAST_SPLAT9]]
69 ; CHECK-NEXT: [[TMP3]] = add <4 x i32> [[VEC_PHI2]], [[BROADCAST_SPLAT9]]
70 ; CHECK-NEXT: [[TMP4]] = add <4 x i32> [[VEC_PHI3]], [[BROADCAST_SPLAT9]]
71 ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 16
72 ; CHECK-NEXT: [[TMP5:%.*]] = icmp eq i64 [[INDEX_NEXT]], 4096
73 ; CHECK-NEXT: br i1 [[TMP5]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
74 ; CHECK: middle.block:
75 ; CHECK-NEXT: [[BIN_RDX:%.*]] = add <4 x i32> [[TMP2]], [[TMP1]]
76 ; CHECK-NEXT: [[BIN_RDX10:%.*]] = add <4 x i32> [[TMP3]], [[BIN_RDX]]
77 ; CHECK-NEXT: [[BIN_RDX11:%.*]] = add <4 x i32> [[TMP4]], [[BIN_RDX10]]
78 ; CHECK-NEXT: [[TMP6:%.*]] = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> [[BIN_RDX11]])
79 ; CHECK-NEXT: br i1 false, label [[LOOPEXIT:%.*]], label [[SCALAR_PH]]
81 ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 4096, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
82 ; CHECK-NEXT: [[BC_MERGE_RDX:%.*]] = phi i32 [ [[TMP6]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY]] ]
83 ; CHECK-NEXT: br label [[FOR_BODY:%.*]]
85 ; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
86 ; CHECK-NEXT: [[ACCUM:%.*]] = phi i32 [ [[ACCUM_NEXT:%.*]], [[FOR_BODY]] ], [ [[BC_MERGE_RDX]], [[SCALAR_PH]] ]
87 ; CHECK-NEXT: [[LOAD:%.*]] = load i32, ptr [[ADDR]], align 4
88 ; CHECK-NEXT: [[ACCUM_NEXT]] = add i32 [[ACCUM]], [[LOAD]]
89 ; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
90 ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV]], 4096
91 ; CHECK-NEXT: br i1 [[EXITCOND]], label [[LOOPEXIT]], label [[FOR_BODY]], !llvm.loop [[LOOP5:![0-9]+]]
93 ; CHECK-NEXT: [[ACCUM_NEXT_LCSSA:%.*]] = phi i32 [ [[ACCUM_NEXT]], [[FOR_BODY]] ], [ [[TMP6]], [[MIDDLE_BLOCK]] ]
94 ; CHECK-NEXT: ret i32 [[ACCUM_NEXT_LCSSA]]
100 %iv = phi i64 [ %iv.next, %for.body ], [ 0, %entry ]
101 %accum = phi i32 [%accum.next, %for.body], [0, %entry]
102 %load = load i32, ptr %addr
103 %accum.next = add i32 %accum, %load
104 %iv.next = add nuw nsw i64 %iv, 1
105 %exitcond = icmp eq i64 %iv, 4096
106 br i1 %exitcond, label %loopexit, label %for.body
112 define i32 @uniform_address(ptr align(4) %addr, i32 %byte_offset) {
113 ; CHECK-LABEL: @uniform_address(
115 ; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
117 ; CHECK-NEXT: [[TMP0:%.*]] = udiv i32 [[BYTE_OFFSET:%.*]], 4
118 ; CHECK-NEXT: [[TMP4:%.*]] = getelementptr i32, ptr [[ADDR:%.*]], i32 [[TMP0]]
119 ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
120 ; CHECK: vector.body:
121 ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
122 ; CHECK-NEXT: [[TMP8:%.*]] = load i32, ptr [[TMP4]], align 4
123 ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 16
124 ; CHECK-NEXT: [[TMP12:%.*]] = icmp eq i64 [[INDEX_NEXT]], 4096
125 ; CHECK-NEXT: br i1 [[TMP12]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]]
126 ; CHECK: middle.block:
127 ; CHECK-NEXT: br i1 false, label [[LOOPEXIT:%.*]], label [[SCALAR_PH]]
129 ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 4096, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
130 ; CHECK-NEXT: br label [[FOR_BODY:%.*]]
132 ; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
133 ; CHECK-NEXT: [[OFFSET:%.*]] = udiv i32 [[BYTE_OFFSET]], 4
134 ; CHECK-NEXT: [[GEP:%.*]] = getelementptr i32, ptr [[ADDR]], i32 [[OFFSET]]
135 ; CHECK-NEXT: [[LOAD:%.*]] = load i32, ptr [[GEP]], align 4
136 ; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
137 ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV]], 4096
138 ; CHECK-NEXT: br i1 [[EXITCOND]], label [[LOOPEXIT]], label [[FOR_BODY]], !llvm.loop [[LOOP7:![0-9]+]]
140 ; CHECK-NEXT: [[LOAD_LCSSA:%.*]] = phi i32 [ [[LOAD]], [[FOR_BODY]] ], [ [[TMP8]], [[MIDDLE_BLOCK]] ]
141 ; CHECK-NEXT: ret i32 [[LOAD_LCSSA]]
147 %iv = phi i64 [ %iv.next, %for.body ], [ 0, %entry ]
148 %offset = udiv i32 %byte_offset, 4
149 %gep = getelementptr i32, ptr %addr, i32 %offset
150 %load = load i32, ptr %gep
151 %iv.next = add nuw nsw i64 %iv, 1
152 %exitcond = icmp eq i64 %iv, 4096
153 br i1 %exitcond, label %loopexit, label %for.body
161 define void @uniform_store_uniform_value(ptr align(4) %addr) {
162 ; CHECK-LABEL: @uniform_store_uniform_value(
164 ; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
166 ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
167 ; CHECK: vector.body:
168 ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
169 ; CHECK-NEXT: store i32 0, ptr [[ADDR:%.*]], align 4
170 ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 16
171 ; CHECK-NEXT: [[TMP0:%.*]] = icmp eq i64 [[INDEX_NEXT]], 4096
172 ; CHECK-NEXT: br i1 [[TMP0]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP8:![0-9]+]]
173 ; CHECK: middle.block:
174 ; CHECK-NEXT: br i1 false, label [[LOOPEXIT:%.*]], label [[SCALAR_PH]]
176 ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 4096, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
177 ; CHECK-NEXT: br label [[FOR_BODY:%.*]]
179 ; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
180 ; CHECK-NEXT: store i32 0, ptr [[ADDR]], align 4
181 ; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
182 ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV]], 4096
183 ; CHECK-NEXT: br i1 [[EXITCOND]], label [[LOOPEXIT]], label [[FOR_BODY]], !llvm.loop [[LOOP9:![0-9]+]]
185 ; CHECK-NEXT: ret void
191 %iv = phi i64 [ %iv.next, %for.body ], [ 0, %entry ]
192 store i32 0, ptr %addr
193 %iv.next = add nuw nsw i64 %iv, 1
194 %exitcond = icmp eq i64 %iv, 4096
195 br i1 %exitcond, label %loopexit, label %for.body
201 define void @uniform_store_varying_value(ptr align(4) %addr) {
202 ; CHECK-LABEL: @uniform_store_varying_value(
204 ; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
206 ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
207 ; CHECK: vector.body:
208 ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
209 ; CHECK-NEXT: [[TMP0:%.*]] = trunc i64 [[INDEX]] to i32
210 ; CHECK-NEXT: [[TMP4:%.*]] = add i32 [[TMP0]], 12
211 ; CHECK-NEXT: [[TMP5:%.*]] = add i32 [[TMP0]], 13
212 ; CHECK-NEXT: [[TMP6:%.*]] = add i32 [[TMP0]], 14
213 ; CHECK-NEXT: [[TMP7:%.*]] = add i32 [[TMP0]], 15
214 ; CHECK-NEXT: store i32 [[TMP7]], ptr [[ADDR:%.*]], align 4
215 ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 16
216 ; CHECK-NEXT: [[TMP8:%.*]] = icmp eq i64 [[INDEX_NEXT]], 4096
217 ; CHECK-NEXT: br i1 [[TMP8]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP10:![0-9]+]]
218 ; CHECK: middle.block:
219 ; CHECK-NEXT: br i1 false, label [[LOOPEXIT:%.*]], label [[SCALAR_PH]]
221 ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 4096, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
222 ; CHECK-NEXT: br label [[FOR_BODY:%.*]]
224 ; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
225 ; CHECK-NEXT: [[IV_I32:%.*]] = trunc i64 [[IV]] to i32
226 ; CHECK-NEXT: store i32 [[IV_I32]], ptr [[ADDR]], align 4
227 ; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
228 ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV]], 4096
229 ; CHECK-NEXT: br i1 [[EXITCOND]], label [[LOOPEXIT]], label [[FOR_BODY]], !llvm.loop [[LOOP11:![0-9]+]]
231 ; CHECK-NEXT: ret void
237 %iv = phi i64 [ %iv.next, %for.body ], [ 0, %entry ]
238 %iv.i32 = trunc i64 %iv to i32
239 store i32 %iv.i32, ptr %addr
240 %iv.next = add nuw nsw i64 %iv, 1
241 %exitcond = icmp eq i64 %iv, 4096
242 br i1 %exitcond, label %loopexit, label %for.body
248 define void @uniform_rw(ptr align(4) %addr) {
249 ; CHECK-LABEL: @uniform_rw(
251 ; CHECK-NEXT: br label [[FOR_BODY:%.*]]
253 ; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ 0, [[ENTRY:%.*]] ]
254 ; CHECK-NEXT: [[LOAD:%.*]] = load i32, ptr [[ADDR:%.*]], align 4
255 ; CHECK-NEXT: [[INC:%.*]] = add i32 [[LOAD]], 1
256 ; CHECK-NEXT: store i32 [[INC]], ptr [[ADDR]], align 4
257 ; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
258 ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV]], 4096
259 ; CHECK-NEXT: br i1 [[EXITCOND]], label [[LOOPEXIT:%.*]], label [[FOR_BODY]]
261 ; CHECK-NEXT: ret void
267 %iv = phi i64 [ %iv.next, %for.body ], [ 0, %entry ]
268 %load = load i32, ptr %addr
269 %inc = add i32 %load, 1
270 store i32 %inc, ptr %addr
271 %iv.next = add nuw nsw i64 %iv, 1
272 %exitcond = icmp eq i64 %iv, 4096
273 br i1 %exitcond, label %loopexit, label %for.body
279 define void @uniform_copy(ptr %A, ptr %B) {
280 ; CHECK-LABEL: @uniform_copy(
282 ; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_MEMCHECK:%.*]]
283 ; CHECK: vector.memcheck:
284 ; CHECK-NEXT: [[UGLYGEP:%.*]] = getelementptr i8, ptr [[B:%.*]], i64 4
285 ; CHECK-NEXT: [[UGLYGEP1:%.*]] = getelementptr i8, ptr [[A:%.*]], i64 4
286 ; CHECK-NEXT: [[BOUND0:%.*]] = icmp ult ptr [[B]], [[UGLYGEP1]]
287 ; CHECK-NEXT: [[BOUND1:%.*]] = icmp ult ptr [[A]], [[UGLYGEP]]
288 ; CHECK-NEXT: [[FOUND_CONFLICT:%.*]] = and i1 [[BOUND0]], [[BOUND1]]
289 ; CHECK-NEXT: br i1 [[FOUND_CONFLICT]], label [[SCALAR_PH]], label [[VECTOR_PH:%.*]]
291 ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
292 ; CHECK: vector.body:
293 ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
294 ; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[A]], align 4, !alias.scope [[META12:![0-9]+]]
295 ; CHECK-NEXT: store i32 [[TMP0]], ptr [[B]], align 4, !alias.scope [[META15:![0-9]+]], !noalias [[META12]]
296 ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 16
297 ; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i64 [[INDEX_NEXT]], 4096
298 ; CHECK-NEXT: br i1 [[TMP1]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP17:![0-9]+]]
299 ; CHECK: middle.block:
300 ; CHECK-NEXT: br i1 false, label [[LOOPEXIT:%.*]], label [[SCALAR_PH]]
302 ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 4096, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ], [ 0, [[VECTOR_MEMCHECK]] ]
303 ; CHECK-NEXT: br label [[FOR_BODY:%.*]]
305 ; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
306 ; CHECK-NEXT: [[LOAD:%.*]] = load i32, ptr [[A]], align 4
307 ; CHECK-NEXT: store i32 [[LOAD]], ptr [[B]], align 4
308 ; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
309 ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV]], 4096
310 ; CHECK-NEXT: br i1 [[EXITCOND]], label [[LOOPEXIT]], label [[FOR_BODY]], !llvm.loop [[LOOP18:![0-9]+]]
312 ; CHECK-NEXT: ret void
318 %iv = phi i64 [ %iv.next, %for.body ], [ 0, %entry ]
319 %load = load i32, ptr %A
320 store i32 %load, ptr %B
321 %iv.next = add nuw nsw i64 %iv, 1
322 %exitcond = icmp eq i64 %iv, 4096
323 br i1 %exitcond, label %loopexit, label %for.body
330 declare void @init(ptr)
332 ;; Count the number of bits set in a bit vector -- key point of relevance is
333 ;; that the byte load is uniform across 8 iterations at a time.
334 ;; TODO: At the moment, this is vectorized with VF=4 and UF=4. The load is
335 ;; considered uniform across VF=4, but should be considered uniform across
337 define i32 @test_count_bits(ptr %test_base) {
338 ; CHECK-LABEL: @test_count_bits(
340 ; CHECK-NEXT: [[ALLOCA:%.*]] = alloca [4096 x i32], align 4
341 ; CHECK-NEXT: call void @init(ptr [[ALLOCA]])
342 ; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
344 ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
345 ; CHECK: vector.body:
346 ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
347 ; CHECK-NEXT: [[VEC_IND:%.*]] = phi <4 x i64> [ <i64 0, i64 1, i64 2, i64 3>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
348 ; CHECK-NEXT: [[VEC_PHI:%.*]] = phi <4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP36:%.*]], [[VECTOR_BODY]] ]
349 ; CHECK-NEXT: [[VEC_PHI4:%.*]] = phi <4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP37:%.*]], [[VECTOR_BODY]] ]
350 ; CHECK-NEXT: [[VEC_PHI5:%.*]] = phi <4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP38:%.*]], [[VECTOR_BODY]] ]
351 ; CHECK-NEXT: [[VEC_PHI6:%.*]] = phi <4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP39:%.*]], [[VECTOR_BODY]] ]
352 ; CHECK-NEXT: [[STEP_ADD:%.*]] = add <4 x i64> [[VEC_IND]], splat (i64 4)
353 ; CHECK-NEXT: [[STEP_ADD_2:%.*]] = add <4 x i64> [[STEP_ADD]], splat (i64 4)
354 ; CHECK-NEXT: [[STEP_ADD_3:%.*]] = add <4 x i64> [[STEP_ADD_2]], splat (i64 4)
355 ; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0
356 ; CHECK-NEXT: [[TMP1:%.*]] = add i64 [[INDEX]], 4
357 ; CHECK-NEXT: [[TMP2:%.*]] = add i64 [[INDEX]], 8
358 ; CHECK-NEXT: [[TMP3:%.*]] = add i64 [[INDEX]], 12
359 ; CHECK-NEXT: [[TMP4:%.*]] = udiv i64 [[TMP0]], 8
360 ; CHECK-NEXT: [[TMP5:%.*]] = udiv i64 [[TMP1]], 8
361 ; CHECK-NEXT: [[TMP6:%.*]] = udiv i64 [[TMP2]], 8
362 ; CHECK-NEXT: [[TMP7:%.*]] = udiv i64 [[TMP3]], 8
363 ; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i8, ptr [[TEST_BASE:%.*]], i64 [[TMP4]]
364 ; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds i8, ptr [[TEST_BASE]], i64 [[TMP5]]
365 ; CHECK-NEXT: [[TMP10:%.*]] = getelementptr inbounds i8, ptr [[TEST_BASE]], i64 [[TMP6]]
366 ; CHECK-NEXT: [[TMP11:%.*]] = getelementptr inbounds i8, ptr [[TEST_BASE]], i64 [[TMP7]]
367 ; CHECK-NEXT: [[TMP12:%.*]] = load i8, ptr [[TMP8]], align 1
368 ; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x i8> poison, i8 [[TMP12]], i64 0
369 ; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x i8> [[BROADCAST_SPLATINSERT]], <4 x i8> poison, <4 x i32> zeroinitializer
370 ; CHECK-NEXT: [[TMP13:%.*]] = load i8, ptr [[TMP9]], align 1
371 ; CHECK-NEXT: [[BROADCAST_SPLATINSERT7:%.*]] = insertelement <4 x i8> poison, i8 [[TMP13]], i64 0
372 ; CHECK-NEXT: [[BROADCAST_SPLAT8:%.*]] = shufflevector <4 x i8> [[BROADCAST_SPLATINSERT7]], <4 x i8> poison, <4 x i32> zeroinitializer
373 ; CHECK-NEXT: [[TMP14:%.*]] = load i8, ptr [[TMP10]], align 1
374 ; CHECK-NEXT: [[BROADCAST_SPLATINSERT9:%.*]] = insertelement <4 x i8> poison, i8 [[TMP14]], i64 0
375 ; CHECK-NEXT: [[BROADCAST_SPLAT10:%.*]] = shufflevector <4 x i8> [[BROADCAST_SPLATINSERT9]], <4 x i8> poison, <4 x i32> zeroinitializer
376 ; CHECK-NEXT: [[TMP15:%.*]] = load i8, ptr [[TMP11]], align 1
377 ; CHECK-NEXT: [[BROADCAST_SPLATINSERT11:%.*]] = insertelement <4 x i8> poison, i8 [[TMP15]], i64 0
378 ; CHECK-NEXT: [[BROADCAST_SPLAT12:%.*]] = shufflevector <4 x i8> [[BROADCAST_SPLATINSERT11]], <4 x i8> poison, <4 x i32> zeroinitializer
379 ; CHECK-NEXT: [[TMP16:%.*]] = urem <4 x i64> [[VEC_IND]], splat (i64 8)
380 ; CHECK-NEXT: [[TMP17:%.*]] = urem <4 x i64> [[STEP_ADD]], splat (i64 8)
381 ; CHECK-NEXT: [[TMP18:%.*]] = urem <4 x i64> [[STEP_ADD_2]], splat (i64 8)
382 ; CHECK-NEXT: [[TMP19:%.*]] = urem <4 x i64> [[STEP_ADD_3]], splat (i64 8)
383 ; CHECK-NEXT: [[TMP20:%.*]] = trunc <4 x i64> [[TMP16]] to <4 x i8>
384 ; CHECK-NEXT: [[TMP21:%.*]] = trunc <4 x i64> [[TMP17]] to <4 x i8>
385 ; CHECK-NEXT: [[TMP22:%.*]] = trunc <4 x i64> [[TMP18]] to <4 x i8>
386 ; CHECK-NEXT: [[TMP23:%.*]] = trunc <4 x i64> [[TMP19]] to <4 x i8>
387 ; CHECK-NEXT: [[TMP24:%.*]] = lshr <4 x i8> [[BROADCAST_SPLAT]], [[TMP20]]
388 ; CHECK-NEXT: [[TMP25:%.*]] = lshr <4 x i8> [[BROADCAST_SPLAT8]], [[TMP21]]
389 ; CHECK-NEXT: [[TMP26:%.*]] = lshr <4 x i8> [[BROADCAST_SPLAT10]], [[TMP22]]
390 ; CHECK-NEXT: [[TMP27:%.*]] = lshr <4 x i8> [[BROADCAST_SPLAT12]], [[TMP23]]
391 ; CHECK-NEXT: [[TMP28:%.*]] = and <4 x i8> [[TMP24]], splat (i8 1)
392 ; CHECK-NEXT: [[TMP29:%.*]] = and <4 x i8> [[TMP25]], splat (i8 1)
393 ; CHECK-NEXT: [[TMP30:%.*]] = and <4 x i8> [[TMP26]], splat (i8 1)
394 ; CHECK-NEXT: [[TMP31:%.*]] = and <4 x i8> [[TMP27]], splat (i8 1)
395 ; CHECK-NEXT: [[TMP32:%.*]] = zext <4 x i8> [[TMP28]] to <4 x i32>
396 ; CHECK-NEXT: [[TMP33:%.*]] = zext <4 x i8> [[TMP29]] to <4 x i32>
397 ; CHECK-NEXT: [[TMP34:%.*]] = zext <4 x i8> [[TMP30]] to <4 x i32>
398 ; CHECK-NEXT: [[TMP35:%.*]] = zext <4 x i8> [[TMP31]] to <4 x i32>
399 ; CHECK-NEXT: [[TMP36]] = add <4 x i32> [[VEC_PHI]], [[TMP32]]
400 ; CHECK-NEXT: [[TMP37]] = add <4 x i32> [[VEC_PHI4]], [[TMP33]]
401 ; CHECK-NEXT: [[TMP38]] = add <4 x i32> [[VEC_PHI5]], [[TMP34]]
402 ; CHECK-NEXT: [[TMP39]] = add <4 x i32> [[VEC_PHI6]], [[TMP35]]
403 ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 16
404 ; CHECK-NEXT: [[VEC_IND_NEXT]] = add <4 x i64> [[STEP_ADD_3]], splat (i64 4)
405 ; CHECK-NEXT: [[TMP40:%.*]] = icmp eq i64 [[INDEX_NEXT]], 4096
406 ; CHECK-NEXT: br i1 [[TMP40]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP19:![0-9]+]]
407 ; CHECK: middle.block:
408 ; CHECK-NEXT: [[BIN_RDX:%.*]] = add <4 x i32> [[TMP37]], [[TMP36]]
409 ; CHECK-NEXT: [[BIN_RDX13:%.*]] = add <4 x i32> [[TMP38]], [[BIN_RDX]]
410 ; CHECK-NEXT: [[BIN_RDX14:%.*]] = add <4 x i32> [[TMP39]], [[BIN_RDX13]]
411 ; CHECK-NEXT: [[TMP41:%.*]] = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> [[BIN_RDX14]])
412 ; CHECK-NEXT: br i1 true, label [[LOOP_EXIT:%.*]], label [[SCALAR_PH]]
414 ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 4096, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
415 ; CHECK-NEXT: [[BC_MERGE_RDX:%.*]] = phi i32 [ [[TMP41]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY]] ]
416 ; CHECK-NEXT: br label [[LOOP:%.*]]
418 ; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]
419 ; CHECK-NEXT: [[ACCUM:%.*]] = phi i32 [ [[BC_MERGE_RDX]], [[SCALAR_PH]] ], [ [[ACCUM_NEXT:%.*]], [[LOOP]] ]
420 ; CHECK-NEXT: [[IV_NEXT]] = add i64 [[IV]], 1
421 ; CHECK-NEXT: [[BYTE:%.*]] = udiv i64 [[IV]], 8
422 ; CHECK-NEXT: [[TEST_ADDR:%.*]] = getelementptr inbounds i8, ptr [[TEST_BASE]], i64 [[BYTE]]
423 ; CHECK-NEXT: [[EARLYCND:%.*]] = load i8, ptr [[TEST_ADDR]], align 1
424 ; CHECK-NEXT: [[BIT:%.*]] = urem i64 [[IV]], 8
425 ; CHECK-NEXT: [[BIT_TRUNC:%.*]] = trunc i64 [[BIT]] to i8
426 ; CHECK-NEXT: [[MASK:%.*]] = lshr i8 [[EARLYCND]], [[BIT_TRUNC]]
427 ; CHECK-NEXT: [[TEST:%.*]] = and i8 [[MASK]], 1
428 ; CHECK-NEXT: [[VAL:%.*]] = zext i8 [[TEST]] to i32
429 ; CHECK-NEXT: [[ACCUM_NEXT]] = add i32 [[ACCUM]], [[VAL]]
430 ; CHECK-NEXT: [[EXIT:%.*]] = icmp ugt i64 [[IV]], 4094
431 ; CHECK-NEXT: br i1 [[EXIT]], label [[LOOP_EXIT]], label [[LOOP]], !llvm.loop [[LOOP20:![0-9]+]]
433 ; CHECK-NEXT: [[ACCUM_NEXT_LCSSA:%.*]] = phi i32 [ [[ACCUM_NEXT]], [[LOOP]] ], [ [[TMP41]], [[MIDDLE_BLOCK]] ]
434 ; CHECK-NEXT: ret i32 [[ACCUM_NEXT_LCSSA]]
437 %alloca = alloca [4096 x i32]
438 call void @init(ptr %alloca)
441 %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
442 %accum = phi i32 [ 0, %entry ], [ %accum.next, %loop ]
443 %iv.next = add i64 %iv, 1
444 %byte = udiv i64 %iv, 8
445 %test_addr = getelementptr inbounds i8, ptr %test_base, i64 %byte
446 %earlycnd = load i8, ptr %test_addr
447 %bit = urem i64 %iv, 8
448 %bit.trunc = trunc i64 %bit to i8
449 %mask = lshr i8 %earlycnd, %bit.trunc
450 %test = and i8 %mask, 1
451 %val = zext i8 %test to i32
452 %accum.next = add i32 %accum, %val
453 %exit = icmp ugt i64 %iv, 4094
454 br i1 %exit, label %loop_exit, label %loop
460 ;; Same as uniform_load, but show that the uniformity analysis can handle
461 ;; pointer operands which are not local to the function.
462 @GAddr = external global i32 align 4
463 define i32 @uniform_load_global() {
464 ; CHECK-LABEL: @uniform_load_global(
466 ; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
468 ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
469 ; CHECK: vector.body:
470 ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
471 ; CHECK-NEXT: [[VEC_PHI:%.*]] = phi <4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP1:%.*]], [[VECTOR_BODY]] ]
472 ; CHECK-NEXT: [[VEC_PHI1:%.*]] = phi <4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP2:%.*]], [[VECTOR_BODY]] ]
473 ; CHECK-NEXT: [[VEC_PHI2:%.*]] = phi <4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP3:%.*]], [[VECTOR_BODY]] ]
474 ; CHECK-NEXT: [[VEC_PHI3:%.*]] = phi <4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP4:%.*]], [[VECTOR_BODY]] ]
475 ; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr @GAddr, align 4
476 ; CHECK-NEXT: [[BROADCAST_SPLATINSERT8:%.*]] = insertelement <4 x i32> poison, i32 [[TMP0]], i64 0
477 ; CHECK-NEXT: [[BROADCAST_SPLAT9:%.*]] = shufflevector <4 x i32> [[BROADCAST_SPLATINSERT8]], <4 x i32> poison, <4 x i32> zeroinitializer
478 ; CHECK-NEXT: [[TMP1]] = add <4 x i32> [[VEC_PHI]], [[BROADCAST_SPLAT9]]
479 ; CHECK-NEXT: [[TMP2]] = add <4 x i32> [[VEC_PHI1]], [[BROADCAST_SPLAT9]]
480 ; CHECK-NEXT: [[TMP3]] = add <4 x i32> [[VEC_PHI2]], [[BROADCAST_SPLAT9]]
481 ; CHECK-NEXT: [[TMP4]] = add <4 x i32> [[VEC_PHI3]], [[BROADCAST_SPLAT9]]
482 ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 16
483 ; CHECK-NEXT: [[TMP5:%.*]] = icmp eq i64 [[INDEX_NEXT]], 4096
484 ; CHECK-NEXT: br i1 [[TMP5]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP21:![0-9]+]]
485 ; CHECK: middle.block:
486 ; CHECK-NEXT: [[BIN_RDX:%.*]] = add <4 x i32> [[TMP2]], [[TMP1]]
487 ; CHECK-NEXT: [[BIN_RDX10:%.*]] = add <4 x i32> [[TMP3]], [[BIN_RDX]]
488 ; CHECK-NEXT: [[BIN_RDX11:%.*]] = add <4 x i32> [[TMP4]], [[BIN_RDX10]]
489 ; CHECK-NEXT: [[TMP6:%.*]] = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> [[BIN_RDX11]])
490 ; CHECK-NEXT: br i1 false, label [[LOOPEXIT:%.*]], label [[SCALAR_PH]]
492 ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 4096, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
493 ; CHECK-NEXT: [[BC_MERGE_RDX:%.*]] = phi i32 [ [[TMP6]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY]] ]
494 ; CHECK-NEXT: br label [[FOR_BODY:%.*]]
496 ; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
497 ; CHECK-NEXT: [[ACCUM:%.*]] = phi i32 [ [[ACCUM_NEXT:%.*]], [[FOR_BODY]] ], [ [[BC_MERGE_RDX]], [[SCALAR_PH]] ]
498 ; CHECK-NEXT: [[LOAD:%.*]] = load i32, ptr @GAddr, align 4
499 ; CHECK-NEXT: [[ACCUM_NEXT]] = add i32 [[ACCUM]], [[LOAD]]
500 ; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
501 ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV]], 4096
502 ; CHECK-NEXT: br i1 [[EXITCOND]], label [[LOOPEXIT]], label [[FOR_BODY]], !llvm.loop [[LOOP22:![0-9]+]]
504 ; CHECK-NEXT: [[ACCUM_NEXT_LCSSA:%.*]] = phi i32 [ [[ACCUM_NEXT]], [[FOR_BODY]] ], [ [[TMP6]], [[MIDDLE_BLOCK]] ]
505 ; CHECK-NEXT: ret i32 [[ACCUM_NEXT_LCSSA]]
511 %iv = phi i64 [ %iv.next, %for.body ], [ 0, %entry ]
512 %accum = phi i32 [%accum.next, %for.body], [0, %entry]
513 %load = load i32, ptr @GAddr
514 %accum.next = add i32 %accum, %load
515 %iv.next = add nuw nsw i64 %iv, 1
516 %exitcond = icmp eq i64 %iv, 4096
517 br i1 %exitcond, label %loopexit, label %for.body
523 ;; Same as the global case, but using a constexpr
524 define i32 @uniform_load_constexpr() {
525 ; CHECK-LABEL: @uniform_load_constexpr(
527 ; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
529 ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
530 ; CHECK: vector.body:
531 ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
532 ; CHECK-NEXT: [[VEC_PHI:%.*]] = phi <4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP1:%.*]], [[VECTOR_BODY]] ]
533 ; CHECK-NEXT: [[VEC_PHI1:%.*]] = phi <4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP2:%.*]], [[VECTOR_BODY]] ]
534 ; CHECK-NEXT: [[VEC_PHI2:%.*]] = phi <4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP3:%.*]], [[VECTOR_BODY]] ]
535 ; CHECK-NEXT: [[VEC_PHI3:%.*]] = phi <4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP4:%.*]], [[VECTOR_BODY]] ]
536 ; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr getelementptr (i32, ptr @GAddr, i64 5), align 4
537 ; CHECK-NEXT: [[BROADCAST_SPLATINSERT8:%.*]] = insertelement <4 x i32> poison, i32 [[TMP0]], i64 0
538 ; CHECK-NEXT: [[BROADCAST_SPLAT9:%.*]] = shufflevector <4 x i32> [[BROADCAST_SPLATINSERT8]], <4 x i32> poison, <4 x i32> zeroinitializer
539 ; CHECK-NEXT: [[TMP1]] = add <4 x i32> [[VEC_PHI]], [[BROADCAST_SPLAT9]]
540 ; CHECK-NEXT: [[TMP2]] = add <4 x i32> [[VEC_PHI1]], [[BROADCAST_SPLAT9]]
541 ; CHECK-NEXT: [[TMP3]] = add <4 x i32> [[VEC_PHI2]], [[BROADCAST_SPLAT9]]
542 ; CHECK-NEXT: [[TMP4]] = add <4 x i32> [[VEC_PHI3]], [[BROADCAST_SPLAT9]]
543 ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 16
544 ; CHECK-NEXT: [[TMP5:%.*]] = icmp eq i64 [[INDEX_NEXT]], 4096
545 ; CHECK-NEXT: br i1 [[TMP5]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP23:![0-9]+]]
546 ; CHECK: middle.block:
547 ; CHECK-NEXT: [[BIN_RDX:%.*]] = add <4 x i32> [[TMP2]], [[TMP1]]
548 ; CHECK-NEXT: [[BIN_RDX10:%.*]] = add <4 x i32> [[TMP3]], [[BIN_RDX]]
549 ; CHECK-NEXT: [[BIN_RDX11:%.*]] = add <4 x i32> [[TMP4]], [[BIN_RDX10]]
550 ; CHECK-NEXT: [[TMP6:%.*]] = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> [[BIN_RDX11]])
551 ; CHECK-NEXT: br i1 false, label [[LOOPEXIT:%.*]], label [[SCALAR_PH]]
553 ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 4096, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
554 ; CHECK-NEXT: [[BC_MERGE_RDX:%.*]] = phi i32 [ [[TMP6]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY]] ]
555 ; CHECK-NEXT: br label [[FOR_BODY:%.*]]
557 ; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[IV_NEXT:%.*]], [[FOR_BODY]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
558 ; CHECK-NEXT: [[ACCUM:%.*]] = phi i32 [ [[ACCUM_NEXT:%.*]], [[FOR_BODY]] ], [ [[BC_MERGE_RDX]], [[SCALAR_PH]] ]
559 ; CHECK-NEXT: [[LOAD:%.*]] = load i32, ptr getelementptr (i32, ptr @GAddr, i64 5), align 4
560 ; CHECK-NEXT: [[ACCUM_NEXT]] = add i32 [[ACCUM]], [[LOAD]]
561 ; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
562 ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV]], 4096
563 ; CHECK-NEXT: br i1 [[EXITCOND]], label [[LOOPEXIT]], label [[FOR_BODY]], !llvm.loop [[LOOP24:![0-9]+]]
565 ; CHECK-NEXT: [[ACCUM_NEXT_LCSSA:%.*]] = phi i32 [ [[ACCUM_NEXT]], [[FOR_BODY]] ], [ [[TMP6]], [[MIDDLE_BLOCK]] ]
566 ; CHECK-NEXT: ret i32 [[ACCUM_NEXT_LCSSA]]
571 for.body: ; preds = %for.body, %entry
572 %iv = phi i64 [ %iv.next, %for.body ], [ 0, %entry ]
573 %accum = phi i32 [ %accum.next, %for.body ], [ 0, %entry ]
574 %load = load i32, ptr getelementptr (i32, ptr @GAddr, i64 5), align 4
575 %accum.next = add i32 %accum, %load
576 %iv.next = add nuw nsw i64 %iv, 1
577 %exitcond = icmp eq i64 %iv, 4096
578 br i1 %exitcond, label %loopexit, label %for.body
580 loopexit: ; preds = %for.body