derek.holloway
7502bf64a4
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119 lines
3.6 KiB
LLVM
119 lines
3.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -passes=dse < %s | FileCheck %s
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declare void @llvm.memcpy.p0.p0.i8(ptr nocapture, ptr nocapture, i8, i1) nounwind
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declare void @llvm.memcpy.inline.p0.p0.i8(ptr nocapture, ptr nocapture, i8, i1) nounwind
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declare void @llvm.memmove.p0.p0.i8(ptr nocapture, ptr nocapture, i8, i1) nounwind
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declare void @llvm.memset.p0.i8(ptr nocapture, i8, i8, i1) nounwind
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define void @test1(ptr noalias %A, ptr noalias %B) {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i8(ptr [[A:%.*]], ptr [[B:%.*]], i8 12, i1 false)
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; CHECK-NEXT: ret void
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;
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store i8 0, ptr %A ;; Written to by memcpy
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call void @llvm.memcpy.p0.p0.i8(ptr %A, ptr %B, i8 12, i1 false)
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ret void
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}
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define void @test2(ptr noalias %A, ptr noalias %B) {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: call void @llvm.memmove.p0.p0.i8(ptr [[A]], ptr [[B:%.*]], i8 12, i1 false)
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; CHECK-NEXT: ret void
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;
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store i8 0, ptr %A ;; Written to by memmove
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call void @llvm.memmove.p0.p0.i8(ptr %A, ptr %B, i8 12, i1 false)
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ret void
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}
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define void @test2a(ptr %A, ptr %B) {
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; CHECK-LABEL: @test2a(
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; CHECK-NEXT: store i8 0, ptr [[A:%.*]], align 1
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; CHECK-NEXT: call void @llvm.memmove.p0.p0.i8(ptr [[A]], ptr [[B:%.*]], i8 12, i1 false)
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; CHECK-NEXT: ret void
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;
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store i8 0, ptr %A ;; Written to by memmove
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call void @llvm.memmove.p0.p0.i8(ptr %A, ptr %B, i8 12, i1 false)
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ret void
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}
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define void @test3(ptr noalias %A) {
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; CHECK-LABEL: @test3(
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; CHECK-NEXT: call void @llvm.memset.p0.i8(ptr [[A:%.*]], i8 0, i8 12, i1 false)
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; CHECK-NEXT: ret void
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;
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store i8 0, ptr %A ;; Written to by memset
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call void @llvm.memset.p0.i8(ptr %A, i8 0, i8 12, i1 false)
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ret void
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}
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declare void @llvm.memcpy.element.unordered.atomic.p0.p0.i16(ptr nocapture, ptr nocapture, i16, i32) nounwind
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declare void @llvm.memmove.element.unordered.atomic.p0.p0.i16(ptr nocapture, ptr nocapture, i16, i32) nounwind
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declare void @llvm.memset.element.unordered.atomic.p0.i16(ptr 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, ptr %A unordered, align 2 ;; Written to by memcpy
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store atomic i16 0, ptr %B unordered, align 2 ;; Read by memcpy
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call void @llvm.memcpy.element.unordered.atomic.p0.p0.i16(ptr align 2 %A, ptr 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, ptr %A unordered, align 2 ;; Written to by memmove
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store atomic i16 0, ptr %B unordered, align 2 ;; Read by memmove
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call void @llvm.memmove.element.unordered.atomic.p0.p0.i16(ptr align 2 %A, ptr 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: [[B:%.*]] = alloca i16, i16 1024, align 2
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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, ptr %A unordered, align 2 ;; Written to by memset
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call void @llvm.memset.element.unordered.atomic.p0.i16(ptr align 2 %A, i8 0, i16 1024, i32 2)
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ret void
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}
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define void @test7(ptr noalias %A, ptr noalias %B) {
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; CHECK-LABEL: @test7(
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; CHECK-NEXT: call void @llvm.memcpy.inline.p0.p0.i8(ptr [[A:%.*]], ptr [[B:%.*]], i8 12, i1 false)
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; CHECK-NEXT: ret void
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;
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store i8 0, ptr %A ;; Written to by memcpy
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call void @llvm.memcpy.inline.p0.p0.i8(ptr %A, ptr %B, i8 12, i1 false)
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ret void
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}
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