derek.holloway
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78 lines
2.2 KiB
LLVM
78 lines
2.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt -S -passes=gvn-sink < %s | FileCheck %s
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; Make sure we do not sink lifetime markers if this would introduce a
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; lifetime with non-alloca operand.
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define void @test_cant_sink(i1 %c) {
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; CHECK-LABEL: define void @test_cant_sink(
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; CHECK-SAME: i1 [[C:%.*]]) {
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; CHECK-NEXT: [[A:%.*]] = alloca i8, align 1
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; CHECK-NEXT: [[B:%.*]] = alloca i8, align 1
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; CHECK-NEXT: call void @llvm.lifetime.start.p0(ptr [[A]])
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; CHECK-NEXT: call void @llvm.lifetime.start.p0(ptr [[B]])
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; CHECK-NEXT: br i1 [[C]], label %[[IF:.*]], label %[[ELSE:.*]]
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; CHECK: [[IF]]:
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; CHECK-NEXT: store i64 1, ptr [[A]], align 4
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; CHECK-NEXT: call void @llvm.lifetime.end.p0(ptr [[A]])
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; CHECK-NEXT: br label %[[JOIN:.*]]
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; CHECK: [[ELSE]]:
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; CHECK-NEXT: store i64 1, ptr [[B]], align 4
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; CHECK-NEXT: call void @llvm.lifetime.end.p0(ptr [[B]])
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; CHECK-NEXT: br label %[[JOIN]]
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; CHECK: [[JOIN]]:
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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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call void @llvm.lifetime.start(ptr %a)
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call void @llvm.lifetime.start(ptr %b)
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br i1 %c, label %if, label %else
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if:
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store i64 1, ptr %a
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call void @llvm.lifetime.end(ptr %a)
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br label %join
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else:
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store i64 1, ptr %b
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call void @llvm.lifetime.end(ptr %b)
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br label %join
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join:
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ret void
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}
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define void @test_can_sink(i1 %c) {
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; CHECK-LABEL: define void @test_can_sink(
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; CHECK-SAME: i1 [[C:%.*]]) {
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; CHECK-NEXT: [[A:%.*]] = alloca i8, align 1
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; CHECK-NEXT: call void @llvm.lifetime.start.p0(ptr [[A]])
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; CHECK-NEXT: br i1 [[C]], label %[[IF:.*]], label %[[ELSE:.*]]
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; CHECK: [[IF]]:
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; CHECK-NEXT: br label %[[JOIN:.*]]
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; CHECK: [[ELSE]]:
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; CHECK-NEXT: br label %[[JOIN]]
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; CHECK: [[JOIN]]:
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; CHECK-NEXT: store i64 1, ptr [[A]], align 4
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; CHECK-NEXT: call void @llvm.lifetime.end.p0(ptr [[A]])
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; CHECK-NEXT: ret void
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;
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%a = alloca i8
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call void @llvm.lifetime.start(ptr %a)
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br i1 %c, label %if, label %else
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if:
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store i64 1, ptr %a
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call void @llvm.lifetime.end(ptr %a)
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br label %join
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else:
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store i64 1, ptr %a
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call void @llvm.lifetime.end(ptr %a)
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br label %join
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join:
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ret void
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}
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