1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -instcombine -S | FileCheck %s
4 define i32 @test([1024 x i8]* %target) {
6 ; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds [1024 x i8], [1024 x i8]* [[TARGET:%.*]], i64 0, i64 0
7 ; CHECK-NEXT: store i8 1, i8* [[TMP1]], align 1
8 ; CHECK-NEXT: [[TMP2:%.*]] = bitcast [1024 x i8]* [[TARGET]] to i16*
9 ; CHECK-NEXT: store i16 257, i16* [[TMP2]], align 2
10 ; CHECK-NEXT: [[TMP3:%.*]] = bitcast [1024 x i8]* [[TARGET]] to i32*
11 ; CHECK-NEXT: store i32 16843009, i32* [[TMP3]], align 4
12 ; CHECK-NEXT: [[TMP4:%.*]] = bitcast [1024 x i8]* [[TARGET]] to i64*
13 ; CHECK-NEXT: store i64 72340172838076673, i64* [[TMP4]], align 8
14 ; CHECK-NEXT: ret i32 0
16 %target_p = getelementptr [1024 x i8], [1024 x i8]* %target, i32 0, i32 0
17 call void @llvm.memset.p0i8.i32(i8* %target_p, i8 1, i32 0, i1 false)
18 call void @llvm.memset.p0i8.i32(i8* %target_p, i8 1, i32 1, i1 false)
19 call void @llvm.memset.p0i8.i32(i8* align 2 %target_p, i8 1, i32 2, i1 false)
20 call void @llvm.memset.p0i8.i32(i8* align 4 %target_p, i8 1, i32 4, i1 false)
21 call void @llvm.memset.p0i8.i32(i8* align 8 %target_p, i8 1, i32 8, i1 false)
25 @Unknown = external constant i128
27 define void @memset_to_constant() {
28 ; CHECK-LABEL: @memset_to_constant(
29 ; CHECK-NEXT: ret void
31 %p = bitcast i128* @Unknown to i8*
32 call void @llvm.memset.p0i8.i32(i8* %p, i8 0, i32 16, i1 false)
36 declare void @llvm.memset.p0i8.i32(i8* nocapture writeonly, i8, i32, i1) argmemonly nounwind