forked from OSchip/llvm-project
178 lines
6.3 KiB
LLVM
178 lines
6.3 KiB
LLVM
; RUN: opt < %s -inline -S | FileCheck %s
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@g0 = global i8* null, align 8
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declare i8* @foo0()
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define i8* @callee0_autoreleaseRV() {
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%call = call i8* @foo0() [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.retainAutoreleasedReturnValue) ]
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%1 = tail call i8* @llvm.objc.autoreleaseReturnValue(i8* %call)
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ret i8* %call
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}
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; CHECK-LABEL: define void @test0_autoreleaseRV(
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; CHECK: call i8* @foo0() [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.retainAutoreleasedReturnValue) ]
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define void @test0_autoreleaseRV() {
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%call = call i8* @callee0_autoreleaseRV() [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.retainAutoreleasedReturnValue) ]
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ret void
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}
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; CHECK-LABEL: define void @test0_claimRV_autoreleaseRV(
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; CHECK: %[[CALL:.*]] = call i8* @foo0() [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.retainAutoreleasedReturnValue) ]
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; CHECK: call void @llvm.objc.release(i8* %[[CALL]])
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; CHECK-NEXT: ret void
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define void @test0_claimRV_autoreleaseRV() {
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%call = call i8* @callee0_autoreleaseRV() [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.unsafeClaimAutoreleasedReturnValue) ]
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ret void
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}
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; CHECK-LABEL: define void @test1_autoreleaseRV(
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; CHECK: invoke i8* @foo0() [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.retainAutoreleasedReturnValue) ]
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define void @test1_autoreleaseRV() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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entry:
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%call = invoke i8* @callee0_autoreleaseRV() [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.retainAutoreleasedReturnValue) ]
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to label %invoke.cont unwind label %lpad
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invoke.cont:
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ret void
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lpad:
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%0 = landingpad { i8*, i32 }
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cleanup
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resume { i8*, i32 } undef
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}
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; CHECK-LABEL: define void @test1_claimRV_autoreleaseRV(
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; CHECK: %[[INVOKE:.*]] = invoke i8* @foo0() [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.retainAutoreleasedReturnValue) ]
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; CHECK: call void @llvm.objc.release(i8* %[[INVOKE]])
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; CHECK-NEXT: br
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define void @test1_claimRV_autoreleaseRV() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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entry:
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%call = invoke i8* @callee0_autoreleaseRV() [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.unsafeClaimAutoreleasedReturnValue) ]
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to label %invoke.cont unwind label %lpad
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invoke.cont:
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ret void
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lpad:
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%0 = landingpad { i8*, i32 }
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cleanup
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resume { i8*, i32 } undef
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}
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define i8* @callee1_no_autoreleaseRV() {
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%call = call i8* @foo0()
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ret i8* %call
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}
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; CHECK-LABEL: define void @test2_no_autoreleaseRV(
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; CHECK: call i8* @foo0() [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.retainAutoreleasedReturnValue) ]
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; CHECK-NEXT: ret void
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define void @test2_no_autoreleaseRV() {
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%call = call i8* @callee1_no_autoreleaseRV() [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.retainAutoreleasedReturnValue) ]
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ret void
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}
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; CHECK-LABEL: define void @test2_claimRV_no_autoreleaseRV(
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; CHECK: call i8* @foo0() [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.unsafeClaimAutoreleasedReturnValue) ]
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; CHECK-NEXT: ret void
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define void @test2_claimRV_no_autoreleaseRV() {
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%call = call i8* @callee1_no_autoreleaseRV() [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.unsafeClaimAutoreleasedReturnValue) ]
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ret void
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}
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; CHECK-LABEL: define void @test3_no_autoreleaseRV(
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; CHECK: invoke i8* @foo0() [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.retainAutoreleasedReturnValue) ]
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define void @test3_no_autoreleaseRV() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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entry:
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%call = invoke i8* @callee1_no_autoreleaseRV() [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.retainAutoreleasedReturnValue) ]
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to label %invoke.cont unwind label %lpad
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invoke.cont:
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ret void
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lpad:
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%0 = landingpad { i8*, i32 }
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cleanup
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resume { i8*, i32 } undef
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}
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define i8* @callee2_nocall() {
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%1 = load i8*, i8** @g0, align 8
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ret i8* %1
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}
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; Check that a call to @llvm.objc.retain is inserted if there is no matching
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; autoreleaseRV call or a call.
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; CHECK-LABEL: define void @test4_nocall(
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; CHECK: %[[V0:.*]] = load i8*, i8** @g0,
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; CHECK-NEXT: call i8* @llvm.objc.retain(i8* %[[V0]])
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; CHECK-NEXT: ret void
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define void @test4_nocall() {
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%call = call i8* @callee2_nocall() [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.retainAutoreleasedReturnValue) ]
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ret void
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}
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; CHECK-LABEL: define void @test4_claimRV_nocall(
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; CHECK: %[[V0:.*]] = load i8*, i8** @g0,
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; CHECK-NEXT: ret void
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define void @test4_claimRV_nocall() {
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%call = call i8* @callee2_nocall() [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.unsafeClaimAutoreleasedReturnValue) ]
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ret void
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}
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; Check that a call to @llvm.objc.retain is inserted if call to @foo already has
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; the attribute. I'm not sure this will happen in practice.
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define i8* @callee3_marker() {
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%1 = call i8* @foo0() [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.retainAutoreleasedReturnValue) ]
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ret i8* %1
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}
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; CHECK-LABEL: define void @test5(
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; CHECK: %[[V0:.*]] = call i8* @foo0() [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.retainAutoreleasedReturnValue) ]
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; CHECK-NEXT: call i8* @llvm.objc.retain(i8* %[[V0]])
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; CHECK-NEXT: ret void
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define void @test5() {
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%call = call i8* @callee3_marker() [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.retainAutoreleasedReturnValue) ]
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ret void
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}
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; Don't pair up an autoreleaseRV in the callee and an retainRV in the caller
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; if there is an instruction between the ret instruction and the call to
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; autoreleaseRV that isn't a cast instruction.
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define i8* @callee0_autoreleaseRV2() {
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%call = call i8* @foo0() [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.retainAutoreleasedReturnValue) ]
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%1 = tail call i8* @llvm.objc.autoreleaseReturnValue(i8* %call)
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store i8* null, i8** @g0
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ret i8* %call
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}
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; CHECK-LABEL: define void @test6(
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; CHECK: %[[V0:.*]] = call i8* @foo0() [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.retainAutoreleasedReturnValue) ]
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; CHECK: call i8* @llvm.objc.autoreleaseReturnValue(i8* %[[V0]])
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; CHECK: store i8* null, i8** @g0, align 8
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; CHECK: call i8* @llvm.objc.retain(i8* %[[V0]])
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; CHECK-NEXT: ret void
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define void @test6() {
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%call = call i8* @callee0_autoreleaseRV2() [ "clang.arc.attachedcall"(i8* (i8*)* @llvm.objc.retainAutoreleasedReturnValue) ]
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ret void
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}
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declare i8* @llvm.objc.retainAutoreleasedReturnValue(i8*)
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declare i8* @llvm.objc.unsafeClaimAutoreleasedReturnValue(i8*)
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declare i8* @llvm.objc.autoreleaseReturnValue(i8*)
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declare i32 @__gxx_personality_v0(...)
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