forked from OSchip/llvm-project
48 lines
1.3 KiB
LLVM
48 lines
1.3 KiB
LLVM
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; RUN: opt -objc-arc -S < %s | FileCheck %s
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; Generated by compiling:
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;
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; id baz(void *X) { return (__bridge_transfer id)X; }
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;
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; void foo(id X) {
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; void *Y = 0;
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; if (X)
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; Y = (__bridge_retained void *)X;
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; baz(Y);
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; }
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;
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; clang -x objective-c -mllvm -enable-objc-arc-opts=0 -fobjc-arc -S -emit-llvm test.m
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;
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; And then hand-reduced further.
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declare i8* @objc_autoreleaseReturnValue(i8*)
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declare i8* @objc_unsafeClaimAutoreleasedReturnValue(i8*)
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declare i8* @objc_retain(i8*)
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declare void @objc_release(i8*)
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define void @foo(i8* %X) {
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entry:
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%0 = tail call i8* @objc_retain(i8* %X)
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%tobool = icmp eq i8* %0, null
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br i1 %tobool, label %if.end, label %if.then
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if.then: ; preds = %entry
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%1 = tail call i8* @objc_retain(i8* nonnull %0)
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br label %if.end
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if.end: ; preds = %if.then, %entry
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%Y.0 = phi i8* [ %1, %if.then ], [ null, %entry ]
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%2 = tail call i8* @objc_autoreleaseReturnValue(i8* %Y.0)
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%3 = tail call i8* @objc_unsafeClaimAutoreleasedReturnValue(i8* %2)
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tail call void @objc_release(i8* %0)
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ret void
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}
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; CHECK: if.then
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; CHECK: tail call i8* @objc_retain
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; CHECK-NEXT: call i8* @objc_autorelease
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; CHECK: %Y.0 = phi
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; CHECK-NEXT: tail call i8* @objc_unsafeClaimAutoreleasedReturnValue(i8* %Y.0)
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; CHECK-NEXT: tail call void @objc_release
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