llvm-6502/test/Transforms/ObjCARC/split-backedge.ll
Bill Wendling 351b7a10e2 Use references to attribute groups on the call/invoke instructions.
Listing all of the attributes for the callee of a call/invoke instruction is way
too much and makes the IR unreadable. Use references to attributes instead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175877 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-22 09:09:42 +00:00

51 lines
1.8 KiB
LLVM

; RUN: opt -S -objc-arc < %s | FileCheck %s
; Handle a retain+release pair entirely contained within a split loop backedge.
; rdar://11256239
; CHECK: define void @test0
; CHECK: call i8* @objc_retain(i8* %call) [[NUW:#[0-9]+]]
; CHECK: call i8* @objc_retain(i8* %call) [[NUW]]
; CHECK: call i8* @objc_retain(i8* %cond) [[NUW]]
; CHECK: call void @objc_release(i8* %call) [[NUW]]
; CHECK: call void @objc_release(i8* %call) [[NUW]]
; CHECK: call void @objc_release(i8* %cond) [[NUW]]
define void @test0() {
entry:
br label %while.body
while.body: ; preds = %while.cond
%call = invoke i8* @returner()
to label %invoke.cont unwind label %lpad, !clang.arc.no_objc_arc_exceptions !0
invoke.cont: ; preds = %while.body
%t0 = call i8* @objc_retain(i8* %call) nounwind
%t1 = call i8* @objc_retain(i8* %call) nounwind
%call.i1 = invoke i8* @returner()
to label %invoke.cont1 unwind label %lpad
invoke.cont1: ; preds = %invoke.cont
%cond = select i1 undef, i8* null, i8* %call
%t2 = call i8* @objc_retain(i8* %cond) nounwind
call void @objc_release(i8* %call) nounwind
call void @objc_release(i8* %call) nounwind
call void @use_pointer(i8* %cond)
call void @objc_release(i8* %cond) nounwind
br label %while.body
lpad: ; preds = %invoke.cont, %while.body
%t4 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__objc_personality_v0 to i8*)
catch i8* null
ret void
}
declare i8* @returner()
declare i32 @__objc_personality_v0(...)
declare void @objc_release(i8*)
declare i8* @objc_retain(i8*)
declare void @use_pointer(i8*)
!0 = metadata !{}
; CHECK: attributes [[NUW]] = { nounwind }