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TheRock/compiler/amd-llvm/llvm/test/Transforms/ObjCARC/intrinsic-use.ll
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

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; RUN: opt -passes=objc-arc -S < %s | FileCheck %s
target datalayout = "e-p:64:64:64"
declare ptr @llvm.objc.retain(ptr)
declare ptr @llvm.objc.retainAutorelease(ptr)
declare void @llvm.objc.release(ptr)
declare ptr @llvm.objc.autorelease(ptr)
declare void @llvm.objc.clang.arc.use(...)
declare void @llvm.objc.clang.arc.noop.use(...)
declare void @test0_helper(ptr, ptr)
declare void @can_release(ptr)
; Ensure that we honor clang.arc.use as a use and don't miscompile
; the reduced test case from <rdar://13195034>.
;
; CHECK-LABEL: define void @test0(
; CHECK: @llvm.objc.retain(ptr %x)
; CHECK-NEXT: store ptr %y, ptr %temp0
; CHECK-NEXT: @llvm.objc.retain(ptr %y)
; CHECK-NEXT: call void @test0_helper
; CHECK-NEXT: [[VAL1:%.*]] = load ptr, ptr %temp0
; CHECK-NEXT: @llvm.objc.retain(ptr [[VAL1]])
; CHECK-NEXT: call void (...) @llvm.objc.clang.arc.use(ptr %y)
; CHECK-NEXT: @llvm.objc.release(ptr %y)
; CHECK-NEXT: store ptr [[VAL1]], ptr %temp1
; CHECK-NEXT: call void @test0_helper
; CHECK-NEXT: [[VAL2:%.*]] = load ptr, ptr %temp1
; CHECK-NEXT: @llvm.objc.retain(ptr [[VAL2]])
; CHECK-NEXT: call void (...) @llvm.objc.clang.arc.use(ptr [[VAL1]])
; CHECK-NEXT: @llvm.objc.release(ptr [[VAL1]])
; CHECK-NEXT: @llvm.objc.autorelease(ptr %x)
; CHECK-NEXT: store ptr %x, ptr %out
; CHECK-NEXT: @llvm.objc.retain(ptr %x)
; CHECK-NEXT: @llvm.objc.release(ptr [[VAL2]])
; CHECK-NEXT: @llvm.objc.release(ptr %x)
; CHECK-NEXT: ret void
; CHECK-NEXT: }
define void @test0(ptr %out, ptr %x, ptr %y) {
entry:
%temp0 = alloca ptr, align 8
%temp1 = alloca ptr, align 8
%0 = call ptr @llvm.objc.retain(ptr %x) nounwind
%1 = call ptr @llvm.objc.retain(ptr %y) nounwind
store ptr %y, ptr %temp0
call void @test0_helper(ptr %x, ptr %temp0)
%val1 = load ptr, ptr %temp0
%2 = call ptr @llvm.objc.retain(ptr %val1) nounwind
call void (...) @llvm.objc.clang.arc.use(ptr %y) nounwind
call void @llvm.objc.release(ptr %y) nounwind
store ptr %val1, ptr %temp1
call void @test0_helper(ptr %x, ptr %temp1)
%val2 = load ptr, ptr %temp1
%3 = call ptr @llvm.objc.retain(ptr %val2) nounwind
call void (...) @llvm.objc.clang.arc.use(ptr %val1) nounwind
call void @llvm.objc.release(ptr %val1) nounwind
%4 = call ptr @llvm.objc.retain(ptr %x) nounwind
%5 = call ptr @llvm.objc.autorelease(ptr %x) nounwind
store ptr %x, ptr %out
call void @llvm.objc.release(ptr %val2) nounwind
call void @llvm.objc.release(ptr %x) nounwind
ret void
}
; CHECK-LABEL: define void @test0a(
; CHECK: @llvm.objc.retain(ptr %x)
; CHECK-NEXT: store ptr %y, ptr %temp0
; CHECK-NEXT: @llvm.objc.retain(ptr %y)
; CHECK-NEXT: call void @test0_helper
; CHECK-NEXT: [[VAL1:%.*]] = load ptr, ptr %temp0
; CHECK-NEXT: @llvm.objc.retain(ptr [[VAL1]])
; CHECK-NEXT: call void (...) @llvm.objc.clang.arc.use(ptr %y)
; CHECK-NEXT: @llvm.objc.release(ptr %y)
; CHECK-NEXT: store ptr [[VAL1]], ptr %temp1
; CHECK-NEXT: call void @test0_helper
; CHECK-NEXT: [[VAL2:%.*]] = load ptr, ptr %temp1
; CHECK-NEXT: @llvm.objc.retain(ptr [[VAL2]])
; CHECK-NEXT: call void (...) @llvm.objc.clang.arc.use(ptr [[VAL1]])
; CHECK-NEXT: @llvm.objc.release(ptr [[VAL1]])
; CHECK-NEXT: @llvm.objc.autorelease(ptr %x)
; CHECK-NEXT: @llvm.objc.release(ptr [[VAL2]])
; CHECK-NEXT: store ptr %x, ptr %out
; CHECK-NEXT: ret void
; CHECK-NEXT: }
define void @test0a(ptr %out, ptr %x, ptr %y) {
entry:
%temp0 = alloca ptr, align 8
%temp1 = alloca ptr, align 8
%0 = call ptr @llvm.objc.retain(ptr %x) nounwind
%1 = call ptr @llvm.objc.retain(ptr %y) nounwind
store ptr %y, ptr %temp0
call void @test0_helper(ptr %x, ptr %temp0)
%val1 = load ptr, ptr %temp0
%2 = call ptr @llvm.objc.retain(ptr %val1) nounwind
call void (...) @llvm.objc.clang.arc.use(ptr %y) nounwind
call void @llvm.objc.release(ptr %y) nounwind, !clang.imprecise_release !0
store ptr %val1, ptr %temp1
call void @test0_helper(ptr %x, ptr %temp1)
%val2 = load ptr, ptr %temp1
%3 = call ptr @llvm.objc.retain(ptr %val2) nounwind
call void (...) @llvm.objc.clang.arc.use(ptr %val1) nounwind
call void @llvm.objc.release(ptr %val1) nounwind, !clang.imprecise_release !0
%4 = call ptr @llvm.objc.retain(ptr %x) nounwind
%5 = call ptr @llvm.objc.autorelease(ptr %x) nounwind
store ptr %x, ptr %out
call void @llvm.objc.release(ptr %val2) nounwind, !clang.imprecise_release !0
call void @llvm.objc.release(ptr %x) nounwind, !clang.imprecise_release !0
ret void
}
; ARC optimizer should be able to safely remove the retain/release pair as the
; call to @llvm.objc.clang.arc.noop.use is a no-op.
; CHECK-LABEL: define void @test_arc_noop_use(
; CHECK-NEXT: call void @can_release(ptr %x)
; CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use(
; CHECK-NEXT: ret void
define void @test_arc_noop_use(ptr %out, ptr %x) {
call ptr @llvm.objc.retain(ptr %x)
call void @can_release(ptr %x)
call void (...) @llvm.objc.clang.arc.noop.use(ptr %x)
call void @llvm.objc.release(ptr %x), !clang.imprecise_release !0
ret void
}
!0 = !{}
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