458 lines
14 KiB
LLVM
458 lines
14 KiB
LLVM
|
; RUN: opt -objc-arc -S < %s | FileCheck %s
|
||
|
|
|
||
|
|
target datalayout = "e-p:64:64:64"
|
||
|
|
|
||
|
|
declare i8* @llvm.objc.retain(i8*)
|
||
|
|
declare i8* @llvm.objc.retainAutoreleasedReturnValue(i8*)
|
||
|
|
declare void @llvm.objc.release(i8*)
|
||
|
|
declare i8* @llvm.objc.autorelease(i8*)
|
||
|
|
declare i8* @llvm.objc.autoreleaseReturnValue(i8*)
|
||
|
|
declare i8* @llvm.objc.retainAutoreleaseReturnValue(i8*)
|
||
|
|
declare void @llvm.objc.autoreleasePoolPop(i8*)
|
||
|
|
declare void @llvm.objc.autoreleasePoolPush()
|
||
|
|
declare i8* @llvm.objc.retainBlock(i8*)
|
||
|
|
|
||
|
|
declare i8* @objc_retainedObject(i8*)
|
||
|
|
declare i8* @objc_unretainedObject(i8*)
|
||
|
|
declare i8* @objc_unretainedPointer(i8*)
|
||
|
|
|
||
|
|
declare void @use_pointer(i8*)
|
||
|
|
declare void @callee()
|
||
|
|
declare void @callee_fnptr(void ()*)
|
||
|
|
declare void @invokee()
|
||
|
|
declare i8* @returner()
|
||
|
|
declare i8* @returner1(i8*)
|
||
|
|
declare i32 @__gxx_personality_v0(...)
|
||
|
|
|
||
|
|
; Test that retain+release elimination is suppressed when the
|
||
|
|
; retain is an objc_retainAutoreleasedReturnValue, since it's
|
||
|
|
; better to do the RV optimization.
|
||
|
|
|
||
|
|
; CHECK-LABEL: define void @test0(
|
||
|
|
; CHECK-NEXT: entry:
|
||
|
|
; CHECK-NEXT: %x = call i8* @returner
|
||
|
|
; CHECK-NEXT: %0 = tail call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %x) [[NUW:#[0-9]+]]
|
||
|
|
; CHECK: t:
|
||
|
|
; CHECK-NOT: @llvm.objc.
|
||
|
|
; CHECK: return:
|
||
|
|
; CHECK-NEXT: call void @llvm.objc.release(i8* %x)
|
||
|
|
; CHECK-NEXT: ret void
|
||
|
|
; CHECK-NEXT: }
|
||
|
|
define void @test0(i1 %p) nounwind {
|
||
|
|
entry:
|
||
|
|
%x = call i8* @returner()
|
||
|
|
%0 = call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %x)
|
||
|
|
br i1 %p, label %t, label %return
|
||
|
|
|
||
|
|
t:
|
||
|
|
call void @use_pointer(i8* %x)
|
||
|
|
store i8 0, i8* %x
|
||
|
|
br label %return
|
||
|
|
|
||
|
|
return:
|
||
|
|
call void @llvm.objc.release(i8* %x) nounwind
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Delete no-ops.
|
||
|
|
|
||
|
|
; CHECK-LABEL: define void @test2(
|
||
|
|
; CHECK-NOT: @llvm.objc.
|
||
|
|
; CHECK: }
|
||
|
|
define void @test2() {
|
||
|
|
call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* null)
|
||
|
|
call i8* @llvm.objc.autoreleaseReturnValue(i8* null)
|
||
|
|
; call i8* @llvm.objc.retainAutoreleaseReturnValue(i8* null) ; TODO
|
||
|
|
%bitcast = bitcast i32* null to i8*
|
||
|
|
%rb = call i8* @llvm.objc.retainBlock(i8* %bitcast)
|
||
|
|
call void @use_pointer(i8* %rb)
|
||
|
|
%rb2 = call i8* @llvm.objc.retainBlock(i8* undef)
|
||
|
|
call void @use_pointer(i8* %rb2)
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Delete a redundant retainRV,autoreleaseRV when forwaring a call result
|
||
|
|
; directly to a return value.
|
||
|
|
|
||
|
|
; CHECK-LABEL: define i8* @test3(
|
||
|
|
; CHECK: call i8* @returner()
|
||
|
|
; CHECK-NEXT: ret i8* %call
|
||
|
|
define i8* @test3() {
|
||
|
|
entry:
|
||
|
|
%call = tail call i8* @returner()
|
||
|
|
%0 = call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %call) nounwind
|
||
|
|
%1 = call i8* @llvm.objc.autoreleaseReturnValue(i8* %0) nounwind
|
||
|
|
ret i8* %1
|
||
|
|
}
|
||
|
|
|
||
|
|
; Delete a redundant retain,autoreleaseRV when forwaring a call result
|
||
|
|
; directly to a return value.
|
||
|
|
|
||
|
|
; CHECK-LABEL: define i8* @test4(
|
||
|
|
; CHECK: call i8* @returner()
|
||
|
|
; CHECK-NEXT: ret i8* %call
|
||
|
|
define i8* @test4() {
|
||
|
|
entry:
|
||
|
|
%call = call i8* @returner()
|
||
|
|
%0 = call i8* @llvm.objc.retain(i8* %call) nounwind
|
||
|
|
%1 = call i8* @llvm.objc.autoreleaseReturnValue(i8* %0) nounwind
|
||
|
|
ret i8* %1
|
||
|
|
}
|
||
|
|
|
||
|
|
; Delete a redundant fused retain+autoreleaseRV when forwaring a call result
|
||
|
|
; directly to a return value.
|
||
|
|
|
||
|
|
; TODO
|
||
|
|
; HECK: define i8* @test5
|
||
|
|
; HECK: call i8* @returner()
|
||
|
|
; HECK-NEXT: ret i8* %call
|
||
|
|
;define i8* @test5() {
|
||
|
|
;entry:
|
||
|
|
; %call = call i8* @returner()
|
||
|
|
; %0 = call i8* @llvm.objc.retainAutoreleaseReturnValue(i8* %call) nounwind
|
||
|
|
; ret i8* %0
|
||
|
|
;}
|
||
|
|
|
||
|
|
; Don't eliminate objc_retainAutoreleasedReturnValue by merging it into
|
||
|
|
; an objc_autorelease.
|
||
|
|
; TODO? Merge objc_retainAutoreleasedReturnValue and objc_autorelease into
|
||
|
|
; objc_retainAutoreleasedReturnValueAutorelease and merge
|
||
|
|
; objc_retainAutoreleasedReturnValue and objc_autoreleaseReturnValue
|
||
|
|
; into objc_retainAutoreleasedReturnValueAutoreleaseReturnValue?
|
||
|
|
; Those entrypoints don't exist yet though.
|
||
|
|
|
||
|
|
; CHECK-LABEL: define i8* @test7(
|
||
|
|
; CHECK: call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %p)
|
||
|
|
; CHECK: %t = tail call i8* @llvm.objc.autoreleaseReturnValue(i8* %p)
|
||
|
|
define i8* @test7() {
|
||
|
|
%p = call i8* @returner()
|
||
|
|
call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %p)
|
||
|
|
%t = call i8* @llvm.objc.autoreleaseReturnValue(i8* %p)
|
||
|
|
call void @use_pointer(i8* %p)
|
||
|
|
ret i8* %t
|
||
|
|
}
|
||
|
|
|
||
|
|
; CHECK-LABEL: define i8* @test7b(
|
||
|
|
; CHECK: call i8* @llvm.objc.retain(i8* %p)
|
||
|
|
; CHECK: %t = tail call i8* @llvm.objc.autoreleaseReturnValue(i8* %p)
|
||
|
|
define i8* @test7b() {
|
||
|
|
%p = call i8* @returner()
|
||
|
|
call void @use_pointer(i8* %p)
|
||
|
|
call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %p)
|
||
|
|
%t = call i8* @llvm.objc.autoreleaseReturnValue(i8* %p)
|
||
|
|
ret i8* %p
|
||
|
|
}
|
||
|
|
|
||
|
|
; Don't apply the RV optimization to autorelease if there's no retain.
|
||
|
|
|
||
|
|
; CHECK: define i8* @test9(i8* %p)
|
||
|
|
; CHECK: call i8* @llvm.objc.autorelease(i8* %p)
|
||
|
|
define i8* @test9(i8* %p) {
|
||
|
|
call i8* @llvm.objc.autorelease(i8* %p)
|
||
|
|
ret i8* %p
|
||
|
|
}
|
||
|
|
|
||
|
|
; Do not apply the RV optimization.
|
||
|
|
|
||
|
|
; CHECK: define i8* @test10(i8* %p)
|
||
|
|
; CHECK: tail call i8* @llvm.objc.retain(i8* %p) [[NUW]]
|
||
|
|
; CHECK: call i8* @llvm.objc.autorelease(i8* %p) [[NUW]]
|
||
|
|
; CHECK-NEXT: ret i8* %p
|
||
|
|
define i8* @test10(i8* %p) {
|
||
|
|
%1 = call i8* @llvm.objc.retain(i8* %p)
|
||
|
|
%2 = call i8* @llvm.objc.autorelease(i8* %p)
|
||
|
|
ret i8* %p
|
||
|
|
}
|
||
|
|
|
||
|
|
; Don't do the autoreleaseRV optimization because @use_pointer
|
||
|
|
; could undo the retain.
|
||
|
|
|
||
|
|
; CHECK: define i8* @test11(i8* %p)
|
||
|
|
; CHECK: tail call i8* @llvm.objc.retain(i8* %p)
|
||
|
|
; CHECK-NEXT: call void @use_pointer(i8* %p)
|
||
|
|
; CHECK: call i8* @llvm.objc.autorelease(i8* %p)
|
||
|
|
; CHECK-NEXT: ret i8* %p
|
||
|
|
define i8* @test11(i8* %p) {
|
||
|
|
%1 = call i8* @llvm.objc.retain(i8* %p)
|
||
|
|
call void @use_pointer(i8* %p)
|
||
|
|
%2 = call i8* @llvm.objc.autorelease(i8* %p)
|
||
|
|
ret i8* %p
|
||
|
|
}
|
||
|
|
|
||
|
|
; Don't spoil the RV optimization.
|
||
|
|
|
||
|
|
; CHECK: define i8* @test12(i8* %p)
|
||
|
|
; CHECK: tail call i8* @llvm.objc.retain(i8* %p)
|
||
|
|
; CHECK: call void @use_pointer(i8* %p)
|
||
|
|
; CHECK: tail call i8* @llvm.objc.autoreleaseReturnValue(i8* %p)
|
||
|
|
; CHECK: ret i8* %p
|
||
|
|
define i8* @test12(i8* %p) {
|
||
|
|
%1 = call i8* @llvm.objc.retain(i8* %p)
|
||
|
|
call void @use_pointer(i8* %p)
|
||
|
|
%2 = call i8* @llvm.objc.autoreleaseReturnValue(i8* %p)
|
||
|
|
ret i8* %p
|
||
|
|
}
|
||
|
|
|
||
|
|
; Don't zap the objc_retainAutoreleasedReturnValue.
|
||
|
|
|
||
|
|
; CHECK-LABEL: define i8* @test13(
|
||
|
|
; CHECK: tail call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %p)
|
||
|
|
; CHECK: call i8* @llvm.objc.autorelease(i8* %p)
|
||
|
|
; CHECK: ret i8* %p
|
||
|
|
define i8* @test13() {
|
||
|
|
%p = call i8* @returner()
|
||
|
|
%1 = call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %p)
|
||
|
|
call void @callee()
|
||
|
|
%2 = call i8* @llvm.objc.autorelease(i8* %p)
|
||
|
|
ret i8* %p
|
||
|
|
}
|
||
|
|
|
||
|
|
; Convert objc_retainAutoreleasedReturnValue to objc_retain if its
|
||
|
|
; argument is not a return value.
|
||
|
|
|
||
|
|
; CHECK-LABEL: define void @test14(
|
||
|
|
; CHECK-NEXT: tail call i8* @llvm.objc.retain(i8* %p) [[NUW]]
|
||
|
|
; CHECK-NEXT: ret void
|
||
|
|
define void @test14(i8* %p) {
|
||
|
|
call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %p)
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Don't convert objc_retainAutoreleasedReturnValue to objc_retain if its
|
||
|
|
; argument is a return value.
|
||
|
|
|
||
|
|
; CHECK-LABEL: define void @test15(
|
||
|
|
; CHECK-NEXT: %y = call i8* @returner()
|
||
|
|
; CHECK-NEXT: tail call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %y) [[NUW]]
|
||
|
|
; CHECK-NEXT: ret void
|
||
|
|
define void @test15() {
|
||
|
|
%y = call i8* @returner()
|
||
|
|
call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %y)
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Delete autoreleaseRV+retainRV pairs.
|
||
|
|
|
||
|
|
; CHECK: define i8* @test19(i8* %p) {
|
||
|
|
; CHECK-NEXT: ret i8* %p
|
||
|
|
define i8* @test19(i8* %p) {
|
||
|
|
call i8* @llvm.objc.autoreleaseReturnValue(i8* %p)
|
||
|
|
call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %p)
|
||
|
|
ret i8* %p
|
||
|
|
}
|
||
|
|
|
||
|
|
; Delete autoreleaseRV+retainRV pairs when they have equivalent PHIs as inputs
|
||
|
|
|
||
|
|
; CHECK: define i8* @test19phi(i8* %p) {
|
||
|
|
; CHECK-NEXT: entry:
|
||
|
|
; CHECK-NEXT: br label %test19bb
|
||
|
|
; CHECK: test19bb:
|
||
|
|
; CHECK-NEXT: ret i8* %p
|
||
|
|
define i8* @test19phi(i8* %p) {
|
||
|
|
entry:
|
||
|
|
br label %test19bb
|
||
|
|
test19bb:
|
||
|
|
%phi1 = phi i8* [ %p, %entry ]
|
||
|
|
%phi2 = phi i8* [ %p, %entry ]
|
||
|
|
call i8* @llvm.objc.autoreleaseReturnValue(i8* %phi1)
|
||
|
|
call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %phi2)
|
||
|
|
ret i8* %p
|
||
|
|
}
|
||
|
|
|
||
|
|
; Like test19 but with plain autorelease.
|
||
|
|
|
||
|
|
; CHECK: define i8* @test20(i8* %p) {
|
||
|
|
; CHECK-NEXT: call i8* @llvm.objc.autorelease(i8* %p)
|
||
|
|
; CHECK-NEXT: call i8* @llvm.objc.retain(i8* %p)
|
||
|
|
; CHECK-NEXT: ret i8* %p
|
||
|
|
define i8* @test20(i8* %p) {
|
||
|
|
call i8* @llvm.objc.autorelease(i8* %p)
|
||
|
|
call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %p)
|
||
|
|
ret i8* %p
|
||
|
|
}
|
||
|
|
|
||
|
|
; Like test19 but with plain retain.
|
||
|
|
|
||
|
|
; CHECK: define i8* @test21(i8* %p) {
|
||
|
|
; CHECK-NEXT: call i8* @llvm.objc.autoreleaseReturnValue(i8* %p)
|
||
|
|
; CHECK-NEXT: call i8* @llvm.objc.retain(i8* %p)
|
||
|
|
; CHECK-NEXT: ret i8* %p
|
||
|
|
define i8* @test21(i8* %p) {
|
||
|
|
call i8* @llvm.objc.autoreleaseReturnValue(i8* %p)
|
||
|
|
call i8* @llvm.objc.retain(i8* %p)
|
||
|
|
ret i8* %p
|
||
|
|
}
|
||
|
|
|
||
|
|
; Like test19 but with plain retain and autorelease.
|
||
|
|
|
||
|
|
; CHECK: define i8* @test22(i8* %p) {
|
||
|
|
; CHECK-NEXT: call i8* @llvm.objc.autorelease(i8* %p)
|
||
|
|
; CHECK-NEXT: call i8* @llvm.objc.retain(i8* %p)
|
||
|
|
; CHECK-NEXT: ret i8* %p
|
||
|
|
define i8* @test22(i8* %p) {
|
||
|
|
call i8* @llvm.objc.autorelease(i8* %p)
|
||
|
|
call i8* @llvm.objc.retain(i8* %p)
|
||
|
|
ret i8* %p
|
||
|
|
}
|
||
|
|
|
||
|
|
; Convert autoreleaseRV to autorelease.
|
||
|
|
|
||
|
|
; CHECK-LABEL: define void @test23(
|
||
|
|
; CHECK: call i8* @llvm.objc.autorelease(i8* %p) [[NUW]]
|
||
|
|
define void @test23(i8* %p) {
|
||
|
|
store i8 0, i8* %p
|
||
|
|
call i8* @llvm.objc.autoreleaseReturnValue(i8* %p)
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Don't convert autoreleaseRV to autorelease if the result is returned,
|
||
|
|
; even through a bitcast.
|
||
|
|
|
||
|
|
; CHECK-LABEL: define {}* @test24(
|
||
|
|
; CHECK: tail call i8* @llvm.objc.autoreleaseReturnValue(i8* %p)
|
||
|
|
define {}* @test24(i8* %p) {
|
||
|
|
%t = call i8* @llvm.objc.autoreleaseReturnValue(i8* %p)
|
||
|
|
%s = bitcast i8* %p to {}*
|
||
|
|
ret {}* %s
|
||
|
|
}
|
||
|
|
|
||
|
|
declare i8* @first_test25();
|
||
|
|
declare i8* @second_test25(i8*);
|
||
|
|
declare void @somecall_test25();
|
||
|
|
|
||
|
|
; ARC optimizer used to move the last release between the call to second_test25
|
||
|
|
; and the call to objc_retainAutoreleasedReturnValue, causing %second to be
|
||
|
|
; released prematurely when %first and %second were pointing to the same object.
|
||
|
|
|
||
|
|
; CHECK-LABEL: define void @test25(
|
||
|
|
; CHECK: %[[CALL1:.*]] = call i8* @second_test25(
|
||
|
|
; CHECK-NEXT: tail call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %[[CALL1]])
|
||
|
|
|
||
|
|
define void @test25() {
|
||
|
|
%first = call i8* @first_test25()
|
||
|
|
%v0 = call i8* @llvm.objc.retain(i8* %first)
|
||
|
|
call void @somecall_test25()
|
||
|
|
%second = call i8* @second_test25(i8* %first)
|
||
|
|
%call2 = call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %second)
|
||
|
|
call void @llvm.objc.release(i8* %second), !clang.imprecise_release !0
|
||
|
|
call void @llvm.objc.release(i8* %first), !clang.imprecise_release !0
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Check that ObjCARCOpt::OptimizeReturns removes the redundant calls even when
|
||
|
|
; they are not in the same basic block. This code used to cause an assertion
|
||
|
|
; failure.
|
||
|
|
|
||
|
|
; CHECK-LABEL: define i8* @test26()
|
||
|
|
; CHECK: call i8* @returner()
|
||
|
|
; CHECK-NOT: call
|
||
|
|
define i8* @test26() {
|
||
|
|
bb0:
|
||
|
|
%v0 = call i8* @returner()
|
||
|
|
%v1 = tail call i8* @llvm.objc.retain(i8* %v0)
|
||
|
|
br label %bb1
|
||
|
|
bb1:
|
||
|
|
%v2 = tail call i8* @llvm.objc.autoreleaseReturnValue(i8* %v1)
|
||
|
|
br label %bb2
|
||
|
|
bb2:
|
||
|
|
ret i8* %v2
|
||
|
|
}
|
||
|
|
|
||
|
|
declare i32* @func27(i32);
|
||
|
|
|
||
|
|
; Check that ObjCARCOpt::OptimizeAutoreleaseRVCall doesn't turn a call to
|
||
|
|
; @llvm.objc.autoreleaseReturnValue into a call to @llvm.objc.autorelease when a return
|
||
|
|
; instruction uses a value equivalent to @llvm.objc.autoreleaseReturnValue's operand.
|
||
|
|
; In the code below, %phival and %retval are considered equivalent.
|
||
|
|
|
||
|
|
; CHECK-LABEL: define i32* @test27(
|
||
|
|
; CHECK: %[[PHIVAL:.*]] = phi i8* [ %{{.*}}, %bb1 ], [ %{{.*}}, %bb2 ]
|
||
|
|
; CHECK: %[[RETVAL:.*]] = phi i32* [ %{{.*}}, %bb1 ], [ %{{.*}}, %bb2 ]
|
||
|
|
; CHECK: tail call i8* @llvm.objc.autoreleaseReturnValue(i8* %[[PHIVAL]])
|
||
|
|
; CHECK: ret i32* %[[RETVAL]]
|
||
|
|
|
||
|
|
define i32* @test27(i1 %cond) {
|
||
|
|
entry:
|
||
|
|
br i1 %cond, label %bb1, label %bb2
|
||
|
|
bb1:
|
||
|
|
%v0 = call i32* @func27(i32 1)
|
||
|
|
%v1 = bitcast i32* %v0 to i8*
|
||
|
|
br label %bb3
|
||
|
|
bb2:
|
||
|
|
%v2 = call i32* @func27(i32 2)
|
||
|
|
%v3 = bitcast i32* %v2 to i8*
|
||
|
|
br label %bb3
|
||
|
|
bb3:
|
||
|
|
%phival = phi i8* [ %v1, %bb1 ], [ %v3, %bb2 ]
|
||
|
|
%retval = phi i32* [ %v0, %bb1 ], [ %v2, %bb2 ]
|
||
|
|
%v4 = tail call i8* @llvm.objc.autoreleaseReturnValue(i8* %phival)
|
||
|
|
ret i32* %retval
|
||
|
|
}
|
||
|
|
|
||
|
|
; Don't eliminate the retainRV/autoreleaseRV pair if the call isn't a tail call.
|
||
|
|
|
||
|
|
; CHECK-LABEL: define i8* @test28(
|
||
|
|
; CHECK: call i8* @returner()
|
||
|
|
; CHECK: call i8* @llvm.objc.retainAutoreleasedReturnValue(
|
||
|
|
; CHECK: call i8* @llvm.objc.autoreleaseReturnValue(
|
||
|
|
define i8* @test28() {
|
||
|
|
entry:
|
||
|
|
%call = call i8* @returner()
|
||
|
|
%0 = call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %call) nounwind
|
||
|
|
%1 = call i8* @llvm.objc.autoreleaseReturnValue(i8* %0) nounwind
|
||
|
|
ret i8* %1
|
||
|
|
}
|
||
|
|
|
||
|
|
; CHECK-LABEL: define i8* @test29(
|
||
|
|
; CHECK: call i8* @llvm.objc.retainAutoreleasedReturnValue(
|
||
|
|
; CHECK: call i8* @llvm.objc.autoreleaseReturnValue(
|
||
|
|
|
||
|
|
define i8* @test29(i8* %k) local_unnamed_addr personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
|
||
|
|
entry:
|
||
|
|
%0 = tail call i8* @llvm.objc.retain(i8* %k)
|
||
|
|
%call = invoke i8* @returner1(i8* %k)
|
||
|
|
to label %invoke.cont unwind label %lpad
|
||
|
|
|
||
|
|
invoke.cont:
|
||
|
|
%1 = bitcast i8* %call to i8*
|
||
|
|
%2 = notail call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %1)
|
||
|
|
tail call void @llvm.objc.release(i8* %k), !clang.imprecise_release !0
|
||
|
|
%3 = tail call i8* @llvm.objc.autoreleaseReturnValue(i8* %1)
|
||
|
|
ret i8* %call
|
||
|
|
|
||
|
|
lpad:
|
||
|
|
%4 = landingpad { i8*, i32 }
|
||
|
|
cleanup
|
||
|
|
tail call void @llvm.objc.release(i8* %k) #1, !clang.imprecise_release !0
|
||
|
|
resume { i8*, i32 } %4
|
||
|
|
}
|
||
|
|
|
||
|
|
; The second retainRV/autoreleaseRV pair can be removed since the call to
|
||
|
|
; @returner is a tail call.
|
||
|
|
|
||
|
|
; CHECK-LABEL: define i8* @test30(
|
||
|
|
; CHECK: %[[V0:.*]] = call i8* @returner()
|
||
|
|
; CHECK-NEXT: call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %[[V0]])
|
||
|
|
; CHECK-NEXT: call i8* @llvm.objc.autoreleaseReturnValue(i8* %[[V0]])
|
||
|
|
; CHECK-NEXT: ret i8* %[[V0]]
|
||
|
|
; CHECK: %[[V3:.*]] = tail call i8* @returner()
|
||
|
|
; CHECK-NEXT: ret i8* %[[V3]]
|
||
|
|
|
||
|
|
define i8* @test30(i1 %cond) {
|
||
|
|
br i1 %cond, label %bb0, label %bb1
|
||
|
|
bb0:
|
||
|
|
%v0 = call i8* @returner()
|
||
|
|
%v1 = call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %v0)
|
||
|
|
%v2 = call i8* @llvm.objc.autoreleaseReturnValue(i8* %v0)
|
||
|
|
ret i8* %v0
|
||
|
|
bb1:
|
||
|
|
%v3 = tail call i8* @returner()
|
||
|
|
%v4 = call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %v3)
|
||
|
|
%v5 = call i8* @llvm.objc.autoreleaseReturnValue(i8* %v3)
|
||
|
|
ret i8* %v3
|
||
|
|
}
|
||
|
|
|
||
|
|
!0 = !{}
|
||
|
|
|
||
|
|
; CHECK: attributes [[NUW]] = { nounwind }
|