forked from OSchip/llvm-project
52 lines
2.6 KiB
LLVM
52 lines
2.6 KiB
LLVM
; RUN: opt -objc-arc -S < %s | FileCheck %s
|
|
|
|
; rdar://10803830
|
|
; The optimizer should be able to prove that the block does not
|
|
; "escape", so the retainBlock+release pair can be eliminated.
|
|
|
|
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
|
|
|
|
%struct.__block_descriptor = type { i64, i64 }
|
|
|
|
@_NSConcreteStackBlock = external global i8*
|
|
@__block_descriptor_tmp = external global { i64, i64, i8*, i8* }
|
|
|
|
; CHECK: define void @test() {
|
|
; CHECK-NOT: @objc
|
|
; CHECK: declare i8* @objc_retainBlock(i8*)
|
|
; CHECK: declare void @objc_release(i8*)
|
|
|
|
define void @test() {
|
|
entry:
|
|
%block = alloca <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i32 }>, align 8
|
|
%block.isa = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i32 }>* %block, i64 0, i32 0
|
|
store i8* bitcast (i8** @_NSConcreteStackBlock to i8*), i8** %block.isa, align 8
|
|
%block.flags = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i32 }>* %block, i64 0, i32 1
|
|
store i32 1073741824, i32* %block.flags, align 8
|
|
%block.reserved = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i32 }>* %block, i64 0, i32 2
|
|
store i32 0, i32* %block.reserved, align 4
|
|
%block.invoke = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i32 }>* %block, i64 0, i32 3
|
|
store i8* bitcast (i32 (i8*)* @__test_block_invoke_0 to i8*), i8** %block.invoke, align 8
|
|
%block.descriptor = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i32 }>* %block, i64 0, i32 4
|
|
store %struct.__block_descriptor* bitcast ({ i64, i64, i8*, i8* }* @__block_descriptor_tmp to %struct.__block_descriptor*), %struct.__block_descriptor** %block.descriptor, align 8
|
|
%block.captured = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i32 }>* %block, i64 0, i32 5
|
|
store i32 4, i32* %block.captured, align 8
|
|
%tmp = bitcast <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i32 }>* %block to i8*
|
|
%tmp1 = call i8* @objc_retainBlock(i8* %tmp) nounwind, !clang.arc.copy_on_escape !0
|
|
%tmp2 = getelementptr inbounds i8* %tmp1, i64 16
|
|
%tmp3 = bitcast i8* %tmp2 to i8**
|
|
%tmp4 = load i8** %tmp3, align 8
|
|
%tmp5 = bitcast i8* %tmp4 to i32 (i8*)*
|
|
%call = call i32 %tmp5(i8* %tmp1)
|
|
call void @objc_release(i8* %tmp1) nounwind, !clang.imprecise_release !0
|
|
ret void
|
|
}
|
|
|
|
declare i32 @__test_block_invoke_0(i8* nocapture %.block_descriptor) nounwind readonly
|
|
|
|
declare i8* @objc_retainBlock(i8*)
|
|
|
|
declare void @objc_release(i8*)
|
|
|
|
!0 = metadata !{}
|