derek.holloway
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37 lines
1.3 KiB
LLVM
37 lines
1.3 KiB
LLVM
; RUN: llc --filetype=obj %s -o - | dxil-dis -o - | FileCheck %s
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target triple = "dxil-unknown-shadermodel6.7-library"
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define void @test_lifetimes() {
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; CHECK-LABEL: test_lifetimes
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; CHECK-NEXT: [[ALLOCA:%.*]] = alloca [2 x i32], align 4
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; CHECK-NEXT: [[BITCAST:%.*]] = bitcast [2 x i32]* [[ALLOCA]] to i8*
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; CHECK-NEXT: call void @llvm.lifetime.start(i64 8, i8* nonnull [[BITCAST]])
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; CHECK-NEXT: [[BITCAST:%.*]] = bitcast [2 x i32]* [[ALLOCA]] to i8*
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; CHECK-NEXT: call void @llvm.lifetime.end(i64 8, i8* nonnull [[BITCAST]])
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; CHECK-NEXT: ret void
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;
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%a = alloca [2 x i32], align 4
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%gep = getelementptr [2 x i32], ptr %a, i32 0, i32 0
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call void @llvm.lifetime.start.p0(ptr nonnull %a)
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store i32 0, ptr %gep, align 4
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call void @llvm.lifetime.end.p0(ptr nonnull %a)
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ret void
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}
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; CHECK-DAG: attributes [[LIFETIME_ATTRS:#.*]] = { nounwind }
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; CHECK-DAG: ; Function Attrs: nounwind
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; CHECK-DAG: declare void @llvm.lifetime.start(i64, i8* nocapture) [[LIFETIME_ATTRS]]
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; CHECK-DAG: ; Function Attrs: nounwind
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; CHECK-DAG: declare void @llvm.lifetime.end(i64, i8* nocapture) [[LIFETIME_ATTRS]]
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; Function Attrs: nounwind memory(argmem: readwrite)
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declare void @llvm.lifetime.end.p0(ptr) #0
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; Function Attrs: nounwind memory(argmem: readwrite)
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declare void @llvm.lifetime.start.p0(ptr) #0
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attributes #0 = { nounwind memory(argmem: readwrite) }
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