1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt -passes=instcombine -S < %s | FileCheck %s
4 %struct1 = type { ptr, i32, i32, i32 }
5 %struct2 = type { i32, i32 }
6 %struct3 = type { i32, %struct4, %struct4 }
7 %struct4 = type { %struct2, %struct2 }
9 define i32 @test1(ptr %dm, i1 %tmp4, i64 %tmp9, i64 %tmp19) {
10 ; CHECK-LABEL: @test1(
12 ; CHECK-NEXT: [[TMP1:%.*]] = load ptr, ptr [[DM:%.*]], align 8
13 ; CHECK-NEXT: br i1 [[TMP4:%.*]], label [[BB1:%.*]], label [[BB2:%.*]]
15 ; CHECK-NEXT: [[TMP10:%.*]] = getelementptr inbounds [[STRUCT2:%.*]], ptr [[TMP1]], i64 [[TMP9:%.*]]
16 ; CHECK-NEXT: store i32 0, ptr [[TMP10]], align 4
17 ; CHECK-NEXT: br label [[BB3:%.*]]
19 ; CHECK-NEXT: [[TMP20:%.*]] = getelementptr inbounds [[STRUCT2]], ptr [[TMP1]], i64 [[TMP19:%.*]]
20 ; CHECK-NEXT: store i32 0, ptr [[TMP20]], align 4
21 ; CHECK-NEXT: br label [[BB3]]
23 ; CHECK-NEXT: [[TMP0:%.*]] = phi i64 [ [[TMP9]], [[BB1]] ], [ [[TMP19]], [[BB2]] ]
24 ; CHECK-NEXT: [[TMP24:%.*]] = getelementptr inbounds [[STRUCT2]], ptr [[TMP1]], i64 [[TMP0]], i32 1
25 ; CHECK-NEXT: [[TMP25:%.*]] = load i32, ptr [[TMP24]], align 4
26 ; CHECK-NEXT: ret i32 [[TMP25]]
29 %tmp1 = load ptr, ptr %dm, align 8
30 br i1 %tmp4, label %bb1, label %bb2
33 %tmp10 = getelementptr inbounds %struct2, ptr %tmp1, i64 %tmp9
34 store i32 0, ptr %tmp10, align 4
38 %tmp20 = getelementptr inbounds %struct2, ptr %tmp1, i64 %tmp19
39 store i32 0, ptr %tmp20, align 4
43 %phi = phi ptr [ %tmp10, %bb1 ], [ %tmp20, %bb2 ]
44 %tmp24 = getelementptr inbounds %struct2, ptr %phi, i64 0, i32 1
45 %tmp25 = load i32, ptr %tmp24, align 4
49 define i32 @test2(ptr %dm, i1 %tmp4, i64 %tmp9, i64 %tmp19) {
50 ; CHECK-LABEL: @test2(
52 ; CHECK-NEXT: [[TMP1:%.*]] = load ptr, ptr [[DM:%.*]], align 8
53 ; CHECK-NEXT: [[TMP10:%.*]] = getelementptr inbounds [[STRUCT2:%.*]], ptr [[TMP1]], i64 [[TMP9:%.*]]
54 ; CHECK-NEXT: store i32 0, ptr [[TMP10]], align 4
55 ; CHECK-NEXT: [[TMP20:%.*]] = getelementptr inbounds [[STRUCT2]], ptr [[TMP1]], i64 [[TMP19:%.*]]
56 ; CHECK-NEXT: store i32 0, ptr [[TMP20]], align 4
57 ; CHECK-NEXT: [[TMP24:%.*]] = getelementptr inbounds i8, ptr [[TMP10]], i64 4
58 ; CHECK-NEXT: [[TMP25:%.*]] = load i32, ptr [[TMP24]], align 4
59 ; CHECK-NEXT: ret i32 [[TMP25]]
62 %tmp1 = load ptr, ptr %dm, align 8
63 %tmp10 = getelementptr inbounds %struct2, ptr %tmp1, i64 %tmp9
64 store i32 0, ptr %tmp10, align 4
65 %tmp20 = getelementptr inbounds %struct2, ptr %tmp1, i64 %tmp19
66 store i32 0, ptr %tmp20, align 4
67 %tmp24 = getelementptr inbounds %struct2, ptr %tmp10, i64 0, i32 1
68 %tmp25 = load i32, ptr %tmp24, align 4
72 ; Check that instcombine doesn't insert GEPs before landingpad.
74 define i32 @test3(ptr %dm, i1 %tmp4, i64 %tmp9, i64 %tmp19, i64 %tmp20, i64 %tmp21) personality ptr @__gxx_personality_v0 {
75 ; CHECK-LABEL: @test3(
77 ; CHECK-NEXT: br i1 [[TMP4:%.*]], label [[BB1:%.*]], label [[BB2:%.*]]
79 ; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds [[STRUCT3:%.*]], ptr [[DM:%.*]], i64 [[TMP19:%.*]], i32 1
80 ; CHECK-NEXT: store i32 0, ptr [[TMP1]], align 4
81 ; CHECK-NEXT: br label [[BB3:%.*]]
83 ; CHECK-NEXT: [[TMP12:%.*]] = getelementptr inbounds [[STRUCT3]], ptr [[DM]], i64 [[TMP20:%.*]], i32 1, i32 0, i32 1
84 ; CHECK-NEXT: store i32 0, ptr [[TMP12]], align 4
85 ; CHECK-NEXT: br label [[BB3]]
87 ; CHECK-NEXT: [[TMP0:%.*]] = phi i64 [ [[TMP19]], [[BB1]] ], [ [[TMP20]], [[BB2]] ]
88 ; CHECK-NEXT: [[TMP22:%.*]] = invoke i32 @foo1(i32 11)
89 ; CHECK-NEXT: to label [[BB4:%.*]] unwind label [[BB5:%.*]]
91 ; CHECK-NEXT: ret i32 0
93 ; CHECK-NEXT: [[TMP27:%.*]] = landingpad { ptr, i32 }
94 ; CHECK-NEXT: catch ptr @_ZTIi
95 ; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds [[STRUCT3]], ptr [[DM]], i64 [[TMP0]], i32 1
96 ; CHECK-NEXT: [[TMP35:%.*]] = getelementptr inbounds [[STRUCT4:%.*]], ptr [[TMP1]], i64 [[TMP21:%.*]], i32 1, i32 1
97 ; CHECK-NEXT: [[TMP25:%.*]] = load i32, ptr [[TMP35]], align 4
98 ; CHECK-NEXT: ret i32 [[TMP25]]
101 br i1 %tmp4, label %bb1, label %bb2
104 %tmp1 = getelementptr inbounds %struct3, ptr %dm, i64 %tmp19, i32 1
105 store i32 0, ptr %tmp1, align 4
109 %tmp2 = getelementptr inbounds %struct3, ptr %dm, i64 %tmp20, i32 1
110 %tmp12 = getelementptr inbounds %struct4, ptr %tmp2, i64 0, i32 0, i32 1
111 store i32 0, ptr %tmp12, align 4
115 %phi = phi ptr [ %tmp1, %bb1 ], [ %tmp2, %bb2 ]
116 %tmp22 = invoke i32 @foo1(i32 11) to label %bb4 unwind label %bb5
122 %tmp27 = landingpad { ptr, i32 } catch ptr @_ZTIi
123 %tmp34 = getelementptr inbounds %struct4, ptr %phi, i64 %tmp21, i32 1
124 %tmp35 = getelementptr inbounds %struct2, ptr %tmp34, i64 0, i32 1
125 %tmp25 = load i32, ptr %tmp35, align 4
129 @_ZTIi = external constant ptr
130 declare i32 @__gxx_personality_v0(...)
131 declare i32 @foo1(i32)
134 ; Check that instcombine doesn't fold GEPs into themselves through a loop
137 define ptr @test4(i32 %value, ptr %buffer) {
138 ; CHECK-LABEL: @test4(
140 ; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i32 [[VALUE:%.*]], 127
141 ; CHECK-NEXT: br i1 [[CMP]], label [[LOOP_HEADER:%.*]], label [[EXIT:%.*]]
142 ; CHECK: loop.header:
143 ; CHECK-NEXT: br label [[LOOP_BODY:%.*]]
145 ; CHECK-NEXT: [[BUFFER_PN:%.*]] = phi ptr [ [[BUFFER:%.*]], [[LOOP_HEADER]] ], [ [[LOOPPTR:%.*]], [[LOOP_BODY]] ]
146 ; CHECK-NEXT: [[NEWVAL:%.*]] = phi i32 [ [[VALUE]], [[LOOP_HEADER]] ], [ [[SHR:%.*]], [[LOOP_BODY]] ]
147 ; CHECK-NEXT: [[LOOPPTR]] = getelementptr inbounds i8, ptr [[BUFFER_PN]], i64 1
148 ; CHECK-NEXT: [[SHR]] = lshr i32 [[NEWVAL]], 7
149 ; CHECK-NEXT: [[CMP2:%.*]] = icmp ugt i32 [[NEWVAL]], 16383
150 ; CHECK-NEXT: br i1 [[CMP2]], label [[LOOP_BODY]], label [[LOOP_EXIT:%.*]]
152 ; CHECK-NEXT: br label [[EXIT]]
154 ; CHECK-NEXT: [[TMP0:%.*]] = phi ptr [ [[LOOPPTR]], [[LOOP_EXIT]] ], [ [[BUFFER]], [[ENTRY:%.*]] ]
155 ; CHECK-NEXT: [[INCPTR3:%.*]] = getelementptr inbounds i8, ptr [[TMP0]], i64 2
156 ; CHECK-NEXT: ret ptr [[INCPTR3]]
159 %incptr = getelementptr inbounds i8, ptr %buffer, i64 1
160 %cmp = icmp ugt i32 %value, 127
161 br i1 %cmp, label %loop.header, label %exit
167 %loopptr = phi ptr [ %incptr, %loop.header ], [ %incptr2, %loop.body ]
168 %newval = phi i32 [ %value, %loop.header ], [ %shr, %loop.body ]
169 %shr = lshr i32 %newval, 7
170 %incptr2 = getelementptr inbounds i8, ptr %loopptr, i64 1
171 %cmp2 = icmp ugt i32 %shr, 127
172 br i1 %cmp2, label %loop.body, label %loop.exit
175 %exitptr = phi ptr [ %incptr2, %loop.body ]
179 %ptr2 = phi ptr [ %exitptr, %loop.exit ], [ %incptr, %entry ]
180 %incptr3 = getelementptr inbounds i8, ptr %ptr2, i64 1
184 @.str.4 = external unnamed_addr constant [100 x i8], align 1
186 ; Instcombine shouldn't add new PHI nodes while folding GEPs if that will leave
187 ; old PHI nodes behind as this is not clearly beneficial.
188 define void @test5(ptr %idx, ptr %in) #0 {
189 ; CHECK-LABEL: @test5(
191 ; CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[IN:%.*]], align 8
192 ; CHECK-NEXT: [[INCDEC_PTR:%.*]] = getelementptr inbounds i8, ptr [[TMP0]], i64 1
193 ; CHECK-NEXT: [[TMP1:%.*]] = load i8, ptr [[INCDEC_PTR]], align 1
194 ; CHECK-NEXT: [[CMP23:%.*]] = icmp eq i8 [[TMP1]], 54
195 ; CHECK-NEXT: br i1 [[CMP23]], label [[WHILE_COND:%.*]], label [[IF_THEN_25:%.*]]
197 ; CHECK-NEXT: call void @g(ptr nonnull @.str.4)
198 ; CHECK-NEXT: br label [[WHILE_COND]]
200 ; CHECK-NEXT: [[PTR:%.*]] = phi ptr [ [[INCDEC_PTR]], [[ENTRY:%.*]] ], [ [[INCDEC_PTR32:%.*]], [[WHILE_BODY:%.*]] ], [ [[INCDEC_PTR]], [[IF_THEN_25]] ]
201 ; CHECK-NEXT: [[TMP2:%.*]] = load i8, ptr [[PTR]], align 1
202 ; CHECK-NEXT: [[AND:%.*]] = and i8 [[TMP2]], 64
203 ; CHECK-NEXT: [[LNOT:%.*]] = icmp eq i8 [[AND]], 0
204 ; CHECK-NEXT: br i1 [[LNOT]], label [[WHILE_BODY]], label [[WHILE_COND_33:%.*]]
206 ; CHECK-NEXT: [[INCDEC_PTR32]] = getelementptr inbounds i8, ptr [[PTR]], i64 1
207 ; CHECK-NEXT: br label [[WHILE_COND]]
208 ; CHECK: while.cond.33:
209 ; CHECK-NEXT: [[INCDEC_PTR34:%.*]] = getelementptr inbounds i8, ptr [[PTR]], i64 1
210 ; CHECK-NEXT: br label [[WHILE_COND_57:%.*]]
211 ; CHECK: while.cond.57:
212 ; CHECK-NEXT: [[TMP3:%.*]] = load i8, ptr [[INCDEC_PTR34]], align 1
213 ; CHECK-NEXT: [[TMP4:%.*]] = zext i8 [[TMP3]] to i64
214 ; CHECK-NEXT: [[ARRAYIDX61:%.*]] = getelementptr inbounds i16, ptr [[IDX:%.*]], i64 [[TMP4]]
215 ; CHECK-NEXT: [[TMP5:%.*]] = load i16, ptr [[ARRAYIDX61]], align 2
216 ; CHECK-NEXT: [[AND63:%.*]] = and i16 [[TMP5]], 2048
217 ; CHECK-NEXT: [[TOBOOL64:%.*]] = icmp eq i16 [[AND63]], 0
218 ; CHECK-NEXT: br i1 [[TOBOOL64]], label [[WHILE_COND_73:%.*]], label [[WHILE_COND_57]]
219 ; CHECK: while.cond.73:
220 ; CHECK-NEXT: br label [[WHILE_COND_73]]
223 %0 = load ptr, ptr %in
224 %incdec.ptr = getelementptr inbounds i8, ptr %0, i32 1
225 %1 = load i8, ptr %incdec.ptr, align 1
226 %cmp23 = icmp eq i8 %1, 54
227 br i1 %cmp23, label %while.cond, label %if.then.25
230 call void @g(ptr @.str.4)
234 %Ptr = phi ptr [ %incdec.ptr, %entry ], [ %incdec.ptr32, %while.body], [%incdec.ptr, %if.then.25 ]
235 %2 = load i8, ptr %Ptr
237 %lnot = icmp eq i8 %and, 0
238 br i1 %lnot, label %while.body, label %while.cond.33
241 %incdec.ptr32 = getelementptr inbounds i8, ptr %Ptr, i32 1
245 %incdec.ptr34 = getelementptr inbounds i8, ptr %Ptr, i32 1
246 br label %while.cond.57
249 %3 = load i8, ptr %incdec.ptr34, align 1
250 %conv59 = zext i8 %3 to i32
251 %arrayidx61 = getelementptr inbounds i16, ptr %idx, i32 %conv59
252 %4 = load i16, ptr %arrayidx61, align 2
253 %and63 = and i16 %4, 2048
254 %tobool64 = icmp eq i16 %and63, 0
255 br i1 %tobool64, label %while.cond.73, label %while.cond.57
258 br label %while.cond.73