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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=instcombine -S | FileCheck %s
define i32 @test([1024 x i8]* %target) {
; CHECK-LABEL: @test(
; CHECK-NEXT: [[TMP1:%.*]] = getelementptr [1024 x i8], [1024 x i8]* [[TARGET:%.*]], i64 0, i64 0
; CHECK-NEXT: store i8 1, i8* [[TMP1]], align 1
; CHECK-NEXT: [[TMP2:%.*]] = bitcast [1024 x i8]* [[TARGET]] to i16*
; CHECK-NEXT: store i16 257, i16* [[TMP2]], align 2
; CHECK-NEXT: [[TMP3:%.*]] = bitcast [1024 x i8]* [[TARGET]] to i32*
; CHECK-NEXT: store i32 16843009, i32* [[TMP3]], align 4
; CHECK-NEXT: [[TMP4:%.*]] = bitcast [1024 x i8]* [[TARGET]] to i64*
; CHECK-NEXT: store i64 72340172838076673, i64* [[TMP4]], align 8
; CHECK-NEXT: ret i32 0
;
%target_p = getelementptr [1024 x i8], [1024 x i8]* %target, i32 0, i32 0
call void @llvm.memset.p0i8.i32(i8* %target_p, i8 1, i32 0, i1 false)
call void @llvm.memset.p0i8.i32(i8* %target_p, i8 1, i32 1, i1 false)
call void @llvm.memset.p0i8.i32(i8* align 2 %target_p, i8 1, i32 2, i1 false)
call void @llvm.memset.p0i8.i32(i8* align 4 %target_p, i8 1, i32 4, i1 false)
call void @llvm.memset.p0i8.i32(i8* align 8 %target_p, i8 1, i32 8, i1 false)
ret i32 0
}
@Unknown = external constant i128
define void @memset_to_constant() {
; CHECK-LABEL: @memset_to_constant(
; CHECK-NEXT: ret void
;
%p = bitcast i128* @Unknown to i8*
call void @llvm.memset.p0i8.i32(i8* %p, i8 0, i32 16, i1 false)
ret void
}
; FIXME: This is technically incorrect because it might overwrite a poison
; value. Stop folding it once #52930 is resolved.
define void @memset_undef(i8* %p) {
; CHECK-LABEL: @memset_undef(
; CHECK-NEXT: ret void
;
call void @llvm.memset.p0i8.i32(i8* %p, i8 undef, i32 8, i1 false)
ret void
}
define void @memset_undef_volatile(i8* %p) {
; CHECK-LABEL: @memset_undef_volatile(
; CHECK-NEXT: call void @llvm.memset.p0i8.i32(i8* [[P:%.*]], i8 undef, i32 8, i1 true)
; CHECK-NEXT: ret void
;
call void @llvm.memset.p0i8.i32(i8* %p, i8 undef, i32 8, i1 true)
ret void
}
define void @memset_poison(i8* %p) {
; CHECK-LABEL: @memset_poison(
; CHECK-NEXT: ret void
;
call void @llvm.memset.p0i8.i32(i8* %p, i8 poison, i32 8, i1 false)
ret void
}
define void @memset_poison_volatile(i8* %p) {
; CHECK-LABEL: @memset_poison_volatile(
; CHECK-NEXT: call void @llvm.memset.p0i8.i32(i8* [[P:%.*]], i8 poison, i32 8, i1 true)
; CHECK-NEXT: ret void
;
call void @llvm.memset.p0i8.i32(i8* %p, i8 poison, i32 8, i1 true)
ret void
}
declare void @llvm.memset.p0i8.i32(i8* nocapture writeonly, i8, i32, i1) argmemonly nounwind
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