177 lines
6 KiB
LLVM
177 lines
6 KiB
LLVM
; RUN: opt < %s -passes=inline -S | FileCheck %s
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@g0 = global ptr null, align 8
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declare ptr @foo0()
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define ptr @callee0_autoreleaseRV() {
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%call = call ptr @foo0() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
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%1 = tail call ptr @llvm.objc.autoreleaseReturnValue(ptr %call)
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ret ptr %call
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}
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; CHECK-LABEL: define void @test0_autoreleaseRV(
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; CHECK: call ptr @foo0() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
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define void @test0_autoreleaseRV() {
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%call = call ptr @callee0_autoreleaseRV() [ "clang.arc.attachedcall"(ptr @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 ptr @foo0() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
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; CHECK: call void @llvm.objc.release(ptr %[[CALL]])
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; CHECK-NEXT: ret void
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define void @test0_claimRV_autoreleaseRV() {
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%call = call ptr @callee0_autoreleaseRV() [ "clang.arc.attachedcall"(ptr @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 ptr @foo0() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
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define void @test1_autoreleaseRV() personality ptr @__gxx_personality_v0 {
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entry:
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%call = invoke ptr @callee0_autoreleaseRV() [ "clang.arc.attachedcall"(ptr @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 { ptr, i32 }
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cleanup
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resume { ptr, i32 } undef
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}
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; CHECK-LABEL: define void @test1_claimRV_autoreleaseRV(
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; CHECK: %[[INVOKE:.*]] = invoke ptr @foo0() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
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; CHECK: call void @llvm.objc.release(ptr %[[INVOKE]])
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; CHECK-NEXT: br
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define void @test1_claimRV_autoreleaseRV() personality ptr @__gxx_personality_v0 {
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entry:
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%call = invoke ptr @callee0_autoreleaseRV() [ "clang.arc.attachedcall"(ptr @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 { ptr, i32 }
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cleanup
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resume { ptr, i32 } undef
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}
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define ptr @callee1_no_autoreleaseRV() {
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%call = call ptr @foo0()
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ret ptr %call
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}
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; CHECK-LABEL: define void @test2_no_autoreleaseRV(
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; CHECK: call ptr @foo0() [ "clang.arc.attachedcall"(ptr @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 ptr @callee1_no_autoreleaseRV() [ "clang.arc.attachedcall"(ptr @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 ptr @foo0() [ "clang.arc.attachedcall"(ptr @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 ptr @callee1_no_autoreleaseRV() [ "clang.arc.attachedcall"(ptr @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 ptr @foo0() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
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define void @test3_no_autoreleaseRV() personality ptr @__gxx_personality_v0 {
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entry:
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%call = invoke ptr @callee1_no_autoreleaseRV() [ "clang.arc.attachedcall"(ptr @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 { ptr, i32 }
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cleanup
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resume { ptr, i32 } undef
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}
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define ptr @callee2_nocall() {
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%1 = load ptr, ptr @g0, align 8
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ret ptr %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 ptr, ptr @g0,
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; CHECK-NEXT: call ptr @llvm.objc.retain(ptr %[[V0]])
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; CHECK-NEXT: ret void
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define void @test4_nocall() {
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%call = call ptr @callee2_nocall() [ "clang.arc.attachedcall"(ptr @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 ptr, ptr @g0,
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; CHECK-NEXT: ret void
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define void @test4_claimRV_nocall() {
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%call = call ptr @callee2_nocall() [ "clang.arc.attachedcall"(ptr @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 ptr @callee3_marker() {
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%1 = call ptr @foo0() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
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ret ptr %1
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}
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; CHECK-LABEL: define void @test5(
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; CHECK: %[[V0:.*]] = call ptr @foo0() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
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; CHECK-NEXT: call ptr @llvm.objc.retain(ptr %[[V0]])
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; CHECK-NEXT: ret void
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define void @test5() {
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%call = call ptr @callee3_marker() [ "clang.arc.attachedcall"(ptr @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 ptr @callee0_autoreleaseRV2() {
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%call = call ptr @foo0() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
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%1 = tail call ptr @llvm.objc.autoreleaseReturnValue(ptr %call)
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store ptr null, ptr @g0
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ret ptr %call
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}
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; CHECK-LABEL: define void @test6(
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; CHECK: %[[V0:.*]] = call ptr @foo0() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
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; CHECK: call ptr @llvm.objc.autoreleaseReturnValue(ptr %[[V0]])
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; CHECK: store ptr null, ptr @g0, align 8
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; CHECK: call ptr @llvm.objc.retain(ptr %[[V0]])
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; CHECK-NEXT: ret void
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define void @test6() {
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%call = call ptr @callee0_autoreleaseRV2() [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
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ret void
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}
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declare ptr @llvm.objc.retainAutoreleasedReturnValue(ptr)
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declare ptr @llvm.objc.unsafeClaimAutoreleasedReturnValue(ptr)
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declare ptr @llvm.objc.autoreleaseReturnValue(ptr)
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declare i32 @__gxx_personality_v0(...)
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