derek.holloway
7502bf64a4
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68 lines
2.8 KiB
LLVM
68 lines
2.8 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -passes=objc-arc < %s | FileCheck %s
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target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
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target triple = "i686--windows-msvc"
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declare ptr @f(ptr, ptr)
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declare i32 @__CxxFrameHandler3(...)
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declare dllimport ptr @llvm.objc.autoreleaseReturnValue(ptr returned)
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declare dllimport ptr @llvm.objc.retain(ptr returned)
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declare dllimport ptr @llvm.objc.retainAutoreleasedReturnValue(ptr returned)
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declare dllimport void @llvm.objc.release(ptr)
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define ptr @g(ptr %p, ptr %q) local_unnamed_addr personality ptr @__CxxFrameHandler3 {
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; CHECK-LABEL: @g(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TMP0:%.*]] = tail call ptr @llvm.objc.retain(ptr [[P:%.*]]) #[[ATTR0:[0-9]+]]
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; CHECK-NEXT: [[V1:%.*]] = call ptr @f(ptr null, ptr null)
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; CHECK-NEXT: [[CALL:%.*]] = invoke ptr @f(ptr [[P]], ptr [[Q:%.*]])
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; CHECK-NEXT: to label [[INVOKE_CONT:%.*]] unwind label [[CATCH_DISPATCH:%.*]], !clang.arc.no_objc_arc_exceptions !0
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; CHECK: catch.dispatch:
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; CHECK-NEXT: [[TMP1:%.*]] = catchswitch within none [label %catch] unwind to caller
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; CHECK: catch:
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; CHECK-NEXT: [[TMP2:%.*]] = catchpad within [[TMP1]] [ptr null, i32 64, ptr null]
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; CHECK-NEXT: catchret from [[TMP2]] to label [[CLEANUP:%.*]]
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; CHECK: invoke.cont:
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; CHECK-NEXT: [[TMP3:%.*]] = tail call ptr @llvm.objc.retainAutoreleasedReturnValue(ptr [[CALL]]) #[[ATTR0]]
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; CHECK-NEXT: br label [[CLEANUP]]
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; CHECK: cleanup:
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; CHECK-NEXT: [[RETVAL_0:%.*]] = phi ptr [ [[CALL]], [[INVOKE_CONT]] ], [ null, [[CATCH:%.*]] ]
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; CHECK-NEXT: tail call void @llvm.objc.release(ptr [[P]]) #[[ATTR0]], !clang.imprecise_release !0
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; CHECK-NEXT: [[TMP4:%.*]] = tail call ptr @llvm.objc.autoreleaseReturnValue(ptr [[RETVAL_0]]) #[[ATTR0]]
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; CHECK-NEXT: ret ptr [[RETVAL_0]]
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;
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entry:
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%0 = tail call ptr @llvm.objc.retain(ptr %p) #0
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; the following call prevents ARC optimizer from removing the retain/release
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; pair on %p
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%v1 = call ptr @f(ptr null, ptr null)
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%1 = tail call ptr @llvm.objc.retain(ptr %q) #0
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%call = invoke ptr @f(ptr %p, ptr %q)
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to label %invoke.cont unwind label %catch.dispatch, !clang.arc.no_objc_arc_exceptions !0
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catch.dispatch:
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%2 = catchswitch within none [label %catch] unwind to caller
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catch:
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%3 = catchpad within %2 [ptr null, i32 64, ptr null]
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catchret from %3 to label %cleanup
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invoke.cont:
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%4 = tail call ptr @llvm.objc.retainAutoreleasedReturnValue(ptr %call) #0
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br label %cleanup
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cleanup:
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%retval.0 = phi ptr [ %call, %invoke.cont ], [ null, %catch ]
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tail call void @llvm.objc.release(ptr %q) #0, !clang.imprecise_release !0
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tail call void @llvm.objc.release(ptr %p) #0, !clang.imprecise_release !0
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%5 = tail call ptr @llvm.objc.autoreleaseReturnValue(ptr %retval.0) #0
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ret ptr %retval.0
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}
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attributes #0 = { nounwind }
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!0 = !{}
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