forked from OSchip/llvm-project
28 lines
727 B
LLVM
28 lines
727 B
LLVM
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; RUN: llc -mtriple=x86_64-unknown-linux-gnu -o - %s | FileCheck %s
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; A lifetime end intrinsic should not prevent a call from being tail call
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; optimized.
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define void @foobar() {
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; CHECK-LABEL: foobar
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; CHECK: pushq %rax
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; CHECK: leaq 4(%rsp), %rdi
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; CHECK: callq foo
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; CHECK: popq %rax
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; CHECK: jmp bar
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entry:
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%i = alloca i32
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%0 = bitcast i32* %i to i8*
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call void @llvm.lifetime.start.p0i8(i64 4, i8* nonnull %0)
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call void @foo(i32* nonnull %i)
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tail call void @bar()
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call void @llvm.lifetime.end.p0i8(i64 4, i8* nonnull %0)
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ret void
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}
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declare void @foo(i32* nocapture %p)
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declare void @bar()
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declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture)
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declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture)
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