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