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| author | Dan Gohman <gohman@apple.com> | 2012-01-13 00:39:07 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2012-01-13 00:39:07 +0000 |
| commit | 728db4997a104335904ebbfafbf767f3c492250d (patch) | |
| tree | c922c204b58c700c7de7897cf892d88e1fb4131f /llvm/test/Transforms/ObjCARC/basic.ll | |
| parent | fb05d237897cbf00e56feb4b29d4b317b86fd739 (diff) | |
| download | bcm5719-llvm-728db4997a104335904ebbfafbf767f3c492250d.tar.gz bcm5719-llvm-728db4997a104335904ebbfafbf767f3c492250d.zip | |
Implement proper ObjC ARC objc_retainBlock "escape" analysis, so that
the optimizer doesn't eliminate objc_retainBlock calls which are needed
for their side effect of copying blocks onto the heap.
This implements rdar://10361249.
llvm-svn: 148076
Diffstat (limited to 'llvm/test/Transforms/ObjCARC/basic.ll')
| -rw-r--r-- | llvm/test/Transforms/ObjCARC/basic.ll | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/llvm/test/Transforms/ObjCARC/basic.ll b/llvm/test/Transforms/ObjCARC/basic.ll index 44c2602e575..552f4e0b96c 100644 --- a/llvm/test/Transforms/ObjCARC/basic.ll +++ b/llvm/test/Transforms/ObjCARC/basic.ll @@ -786,7 +786,7 @@ C: @__block_holder_tmp_1 = external constant %block1 define void @test23() { entry: - %0 = call i8* @objc_retainBlock(i8* bitcast (%block1* @__block_holder_tmp_1 to i8*)) nounwind + %0 = call i8* @objc_retainBlock(i8* bitcast (%block1* @__block_holder_tmp_1 to i8*)) nounwind, !clang.arc.copy_on_escape !0 call void @bar(i32 ()* bitcast (%block1* @__block_holder_tmp_1 to i32 ()*)) call void @bar(i32 ()* bitcast (%block1* @__block_holder_tmp_1 to i32 ()*)) call void @objc_release(i8* bitcast (%block1* @__block_holder_tmp_1 to i8*)) nounwind @@ -801,13 +801,28 @@ entry: ; CHECK: } define void @test23b(i8* %p) { entry: - %0 = call i8* @objc_retainBlock(i8* %p) nounwind + %0 = call i8* @objc_retainBlock(i8* %p) nounwind, !clang.arc.copy_on_escape !0 call void @callee() call void @use_pointer(i8* %p) call void @objc_release(i8* %p) nounwind ret void } +; Don't optimize objc_retainBlock, because there's no copy_on_escape metadata. + +; CHECK: define void @test23c( +; CHECK: @objc_retainBlock +; CHECK: @objc_release +; CHECK: } +define void @test23c() { +entry: + %0 = call i8* @objc_retainBlock(i8* bitcast (%block1* @__block_holder_tmp_1 to i8*)) nounwind + call void @bar(i32 ()* bitcast (%block1* @__block_holder_tmp_1 to i32 ()*)) + call void @bar(i32 ()* bitcast (%block1* @__block_holder_tmp_1 to i32 ()*)) + call void @objc_release(i8* bitcast (%block1* @__block_holder_tmp_1 to i8*)) nounwind + ret void +} + ; Any call can decrement a retain count. ; CHECK: define void @test24( |
