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27 lines
713 B
27 lines
713 B
4 months ago
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; RUN: opt -mem2reg -S -o - < %s | FileCheck %s
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declare void @llvm.lifetime.start(i64 %size, i8* nocapture %ptr)
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declare void @llvm.lifetime.end(i64 %size, i8* nocapture %ptr)
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define void @test1() {
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; CHECK: test1
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; CHECK-NOT: alloca
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%A = alloca i32
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%B = bitcast i32* %A to i8*
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call void @llvm.lifetime.start(i64 2, i8* %B)
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store i32 1, i32* %A
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call void @llvm.lifetime.end(i64 2, i8* %B)
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ret void
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}
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define void @test2() {
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; CHECK: test2
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; CHECK-NOT: alloca
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%A = alloca {i8, i16}
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%B = getelementptr {i8, i16}, {i8, i16}* %A, i32 0, i32 0
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call void @llvm.lifetime.start(i64 2, i8* %B)
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store {i8, i16} zeroinitializer, {i8, i16}* %A
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call void @llvm.lifetime.end(i64 2, i8* %B)
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ret void
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}
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