96 lines
2.5 KiB
LLVM
96 lines
2.5 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -dse -enable-dse-memoryssa=false < %s | FileCheck %s
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declare void @llvm.memcpy.p0i8.p0i8.i8(i8* nocapture, i8* nocapture, i8, i1) nounwind
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declare void @llvm.memmove.p0i8.p0i8.i8(i8* nocapture, i8* nocapture, i8, i1) nounwind
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declare void @llvm.memset.p0i8.i8(i8* nocapture, i8, i8, i1) nounwind
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define void @test1() {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: ret void
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;
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%A = alloca i8
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%B = alloca i8
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store i8 0, i8* %A ;; Written to by memcpy
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call void @llvm.memcpy.p0i8.p0i8.i8(i8* %A, i8* %B, i8 -1, i1 false)
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ret void
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}
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define void @test2() {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: ret void
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;
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%A = alloca i8
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%B = alloca i8
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store i8 0, i8* %A ;; Written to by memmove
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call void @llvm.memmove.p0i8.p0i8.i8(i8* %A, i8* %B, i8 -1, i1 false)
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ret void
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}
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define void @test3() {
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; CHECK-LABEL: @test3(
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; CHECK-NEXT: ret void
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;
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%A = alloca i8
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store i8 0, i8* %A ;; Written to by memset
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call void @llvm.memset.p0i8.i8(i8* %A, i8 0, i8 -1, i1 false)
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ret void
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}
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declare void @llvm.memcpy.element.unordered.atomic.p0i16.p0i16.i16(i16* nocapture, i16* nocapture, i16, i32) nounwind
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declare void @llvm.memmove.element.unordered.atomic.p0i16.p0i16.i16(i16* nocapture, i16* nocapture, i16, i32) nounwind
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declare void @llvm.memset.element.unordered.atomic.p0i16.i16(i16* nocapture, i8, i16, i32) nounwind
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define void @test4() {
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; CHECK-LABEL: @test4(
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; CHECK-NEXT: ret void
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;
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%A = alloca i16, i16 1024, align 2
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%B = alloca i16, i16 1024, align 2
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store atomic i16 0, i16* %A unordered, align 2 ;; Written to by memcpy
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store atomic i16 0, i16* %B unordered, align 2 ;; Read by memcpy
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call void @llvm.memcpy.element.unordered.atomic.p0i16.p0i16.i16(i16* align 2 %A, i16* align 2 %B, i16 1024, i32 2)
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ret void
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}
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define void @test5() {
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; CHECK-LABEL: @test5(
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; CHECK-NEXT: ret void
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;
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%A = alloca i16, i16 1024, align 2
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%B = alloca i16, i16 1024, align 2
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store atomic i16 0, i16* %A unordered, align 2 ;; Written to by memmove
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store atomic i16 0, i16* %B unordered, align 2 ;; Read by memmove
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call void @llvm.memmove.element.unordered.atomic.p0i16.p0i16.i16(i16* align 2 %A, i16* align 2 %B, i16 1024, i32 2)
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ret void
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}
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define void @test6() {
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; CHECK-LABEL: @test6(
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; CHECK-NEXT: ret void
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;
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%A = alloca i16, i16 1024, align 2
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store atomic i16 0, i16* %A unordered, align 2 ;; Written to by memset
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call void @llvm.memset.element.unordered.atomic.p0i16.i16(i16* align 2 %A, i8 0, i16 1024, i32 2)
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ret void
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}
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