82 lines
2.5 KiB
LLVM
82 lines
2.5 KiB
LLVM
; RUN: opt -S -objc-arc-contract < %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-msvc19.11.0"
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%0 = type opaque
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declare i32 @__CxxFrameHandler3(...)
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declare dllimport void @llvm.objc.release(i8*) local_unnamed_addr
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declare dllimport i8* @llvm.objc.retain(i8* returned) local_unnamed_addr
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@p = global i8* null, align 4
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declare void @f() local_unnamed_addr
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define void @g() local_unnamed_addr personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
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entry:
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%tmp = load i8*, i8** @p, align 4
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%cast = bitcast i8* %tmp to %0*
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%tmp1 = tail call i8* @llvm.objc.retain(i8* %tmp) #0
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; Split the basic block to ensure bitcast ends up in entry.split.
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br label %entry.split
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entry.split:
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invoke void @f()
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to label %invoke.cont unwind label %catch.dispatch
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; Dummy nested catchswitch to test looping through the dominator tree.
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catch.dispatch:
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%tmp2 = catchswitch within none [label %catch] unwind label %catch.dispatch1
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catch:
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%tmp3 = catchpad within %tmp2 [i8* null, i32 64, i8* null]
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catchret from %tmp3 to label %invoke.cont
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catch.dispatch1:
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%tmp4 = catchswitch within none [label %catch1] unwind label %ehcleanup
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catch1:
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%tmp5 = catchpad within %tmp4 [i8 *null, i32 64, i8* null]
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catchret from %tmp5 to label %invoke.cont
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invoke.cont:
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%tmp6 = load i8*, i8** @p, align 4
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%cast1 = bitcast i8* %tmp6 to %0*
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%tmp7 = tail call i8* @llvm.objc.retain(i8* %tmp6) #0
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call void @llvm.objc.release(i8* %tmp) #0, !clang.imprecise_release !0
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; Split the basic block to ensure bitcast ends up in invoke.cont.split.
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br label %invoke.cont.split
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invoke.cont.split:
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invoke void @f()
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to label %invoke.cont1 unwind label %ehcleanup
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invoke.cont1:
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ret void
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ehcleanup:
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%tmp8 = phi %0* [ %cast, %catch.dispatch1 ], [ %cast1, %invoke.cont.split ]
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%tmp9 = cleanuppad within none []
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%tmp10 = bitcast %0* %tmp8 to i8*
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call void @llvm.objc.release(i8* %tmp10) #0 [ "funclet"(token %tmp9) ]
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cleanupret from %tmp9 unwind to caller
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}
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; CHECK-LABEL: entry.split:
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; CHECK-NEXT: %0 = bitcast i8* %tmp1 to %0*
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; CHECK-NEXT: invoke void @f()
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; CHECK-NEXT: to label %invoke.cont unwind label %catch.dispatch
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; CHECK-LABEL: invoke.cont.split:
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; CHECK-NEXT: %1 = bitcast i8* %tmp7 to %0*
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; CHECK-NEXT: invoke void @f()
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; CHECK-NEXT: to label %invoke.cont1 unwind label %ehcleanup
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; CHECK-LABEL: ehcleanup:
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; CHECK-NEXT: %tmp8 = phi %0* [ %0, %catch.dispatch1 ], [ %1, %invoke.cont.split ]
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attributes #0 = { nounwind }
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!0 = !{}
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