; RUN: opt < %s -passes=inline -S | FileCheck %s
@g0 = global ptr null, align 8
declare ptr @foo0()
define ptr @callee0_autoreleaseRV() {
%call = call ptr @foo0() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
%1 = tail call ptr @llvm.objc.autoreleaseReturnValue(ptr %call)
ret ptr %call
}
; CHECK-LABEL: define void @test0_autoreleaseRV(
; CHECK: call ptr @foo0() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
define void @test0_autoreleaseRV() {
%call = call ptr @callee0_autoreleaseRV() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
ret void
}
; CHECK-LABEL: define void @test0_claimRV_autoreleaseRV(
; CHECK: %[[CALL:.*]] = call ptr @foo0() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
; CHECK: call void @llvm.objc.release(ptr %[[CALL]])
; CHECK-NEXT: ret void
define void @test0_claimRV_autoreleaseRV() {
%call = call ptr @callee0_autoreleaseRV() [ "clang.arc.attachedcall"(ptr @llvm.objc.unsafeClaimAutoreleasedReturnValue) ]
ret void
}
; CHECK-LABEL: define void @test1_autoreleaseRV(
; CHECK: invoke ptr @foo0() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
define void @test1_autoreleaseRV() personality ptr @__gxx_personality_v0 {
entry:
%call = invoke ptr @callee0_autoreleaseRV() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
to label %invoke.cont unwind label %lpad
invoke.cont:
ret void
lpad:
%0 = landingpad { ptr, i32 }
cleanup
resume { ptr, i32 } undef
}
; CHECK-LABEL: define void @test1_claimRV_autoreleaseRV(
; CHECK: %[[INVOKE:.*]] = invoke ptr @foo0() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
; CHECK: call void @llvm.objc.release(ptr %[[INVOKE]])
; CHECK-NEXT: br
define void @test1_claimRV_autoreleaseRV() personality ptr @__gxx_personality_v0 {
entry:
%call = invoke ptr @callee0_autoreleaseRV() [ "clang.arc.attachedcall"(ptr @llvm.objc.unsafeClaimAutoreleasedReturnValue) ]
to label %invoke.cont unwind label %lpad
invoke.cont:
ret void
lpad:
%0 = landingpad { ptr, i32 }
cleanup
resume { ptr, i32 } undef
}
define ptr @callee1_no_autoreleaseRV() {
%call = call ptr @foo0()
ret ptr %call
}
; CHECK-LABEL: define void @test2_no_autoreleaseRV(
; CHECK: call ptr @foo0() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
; CHECK-NEXT: ret void
define void @test2_no_autoreleaseRV() {
%call = call ptr @callee1_no_autoreleaseRV() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
ret void
}
; CHECK-LABEL: define void @test2_claimRV_no_autoreleaseRV(
; CHECK: call ptr @foo0() [ "clang.arc.attachedcall"(ptr @llvm.objc.unsafeClaimAutoreleasedReturnValue) ]
; CHECK-NEXT: ret void
define void @test2_claimRV_no_autoreleaseRV() {
%call = call ptr @callee1_no_autoreleaseRV() [ "clang.arc.attachedcall"(ptr @llvm.objc.unsafeClaimAutoreleasedReturnValue) ]
ret void
}
; CHECK-LABEL: define void @test3_no_autoreleaseRV(
; CHECK: invoke ptr @foo0() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
define void @test3_no_autoreleaseRV() personality ptr @__gxx_personality_v0 {
entry:
%call = invoke ptr @callee1_no_autoreleaseRV() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
to label %invoke.cont unwind label %lpad
invoke.cont:
ret void
lpad:
%0 = landingpad { ptr, i32 }
cleanup
resume { ptr, i32 } undef
}
define ptr @callee2_nocall() {
%1 = load ptr, ptr @g0, align 8
ret ptr %1
}
; Check that a call to @llvm.objc.retain is inserted if there is no matching
; autoreleaseRV call or a call.
; CHECK-LABEL: define void @test4_nocall(
; CHECK: %[[V0:.*]] = load ptr, ptr @g0,
; CHECK-NEXT: call ptr @llvm.objc.retain(ptr %[[V0]])
; CHECK-NEXT: ret void
define void @test4_nocall() {
%call = call ptr @callee2_nocall() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
ret void
}
; CHECK-LABEL: define void @test4_claimRV_nocall(
; CHECK: %[[V0:.*]] = load ptr, ptr @g0,
; CHECK-NEXT: ret void
define void @test4_claimRV_nocall() {
%call = call ptr @callee2_nocall() [ "clang.arc.attachedcall"(ptr @llvm.objc.unsafeClaimAutoreleasedReturnValue) ]
ret void
}
; Check that a call to @llvm.objc.retain is inserted if call to @foo already has
; the attribute. I'm not sure this will happen in practice.
define ptr @callee3_marker() {
%1 = call ptr @foo0() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
ret ptr %1
}
; CHECK-LABEL: define void @test5(
; CHECK: %[[V0:.*]] = call ptr @foo0() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
; CHECK-NEXT: call ptr @llvm.objc.retain(ptr %[[V0]])
; CHECK-NEXT: ret void
define void @test5() {
%call = call ptr @callee3_marker() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
ret void
}
; Don't pair up an autoreleaseRV in the callee and an retainRV in the caller
; if there is an instruction between the ret instruction and the call to
; autoreleaseRV that isn't a cast instruction.
define ptr @callee0_autoreleaseRV2() {
%call = call ptr @foo0() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
%1 = tail call ptr @llvm.objc.autoreleaseReturnValue(ptr %call)
store ptr null, ptr @g0
ret ptr %call
}
; CHECK-LABEL: define void @test6(
; CHECK: %[[V0:.*]] = call ptr @foo0() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
; CHECK: call ptr @llvm.objc.autoreleaseReturnValue(ptr %[[V0]])
; CHECK: store ptr null, ptr @g0, align 8
; CHECK: call ptr @llvm.objc.retain(ptr %[[V0]])
; CHECK-NEXT: ret void
define void @test6() {
%call = call ptr @callee0_autoreleaseRV2() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
ret void
}
declare ptr @llvm.objc.retainAutoreleasedReturnValue(ptr)
declare ptr @llvm.objc.unsafeClaimAutoreleasedReturnValue(ptr)
declare ptr @llvm.objc.autoreleaseReturnValue(ptr)
declare i32 @__gxx_personality_v0(...)
Codebase Browser
llvm