be4f571107
We're moving ARC optimisation and ARC emission in clang away from runtime methods and towards intrinsics. This is the part which actually uses the intrinsics in the ARC optimizer when both analyzing the existing calls and emitting new ones. Differential Revision: https://reviews.llvm.org/D55348 Reviewers: ahatanak llvm-svn: 349534
55 lines
1.8 KiB
LLVM
55 lines
1.8 KiB
LLVM
; RUN: opt -S -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 i8* @f(i8*, i8*)
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declare i32 @__CxxFrameHandler3(...)
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declare dllimport i8* @llvm.objc.autoreleaseReturnValue(i8* returned)
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declare dllimport i8* @llvm.objc.retain(i8* returned)
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declare dllimport i8* @llvm.objc.retainAutoreleasedReturnValue(i8* returned)
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declare dllimport void @llvm.objc.release(i8*)
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define i8* @g(i8* %p, i8* %q) local_unnamed_addr personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
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entry:
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%0 = tail call i8* @llvm.objc.retain(i8* %p) #0
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%1 = tail call i8* @llvm.objc.retain(i8* %q) #0
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%call = invoke i8* @f(i8* %p, i8* %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 [i8* null, i32 64, i8* null]
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catchret from %3 to label %cleanup
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invoke.cont:
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%4 = tail call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %call) #0
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br label %cleanup
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cleanup:
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%retval.0 = phi i8* [ %call, %invoke.cont ], [ null, %catch ]
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tail call void @llvm.objc.release(i8* %q) #0, !clang.imprecise_release !0
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tail call void @llvm.objc.release(i8* %p) #0, !clang.imprecise_release !0
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%5 = tail call i8* @llvm.objc.autoreleaseReturnValue(i8* %retval.0) #0
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ret i8* %retval.0
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}
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; CHECK-LABEL: entry:
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; CHECK-NEXT: %0 = tail call i8* @llvm.objc.retain(i8* %p) #0
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; CHECK-NEXT: %call = invoke i8* @f(i8* %p, i8* %q)
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; CHECK-NEXT: to label %invoke.cont unwind label %catch.dispatch
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; CHECK-LABEL: catch.dispatch:
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; CHECK-NEXT: %1 = catchswitch within none [label %catch] unwind to caller
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; CHECK-LABEL: cleanup:
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; CHECK: tail call void @llvm.objc.release(i8* %p) #0
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attributes #0 = { nounwind }
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!0 = !{}
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