1b1c8d83d3
Turning on `enable_noundef_analysis` flag allows better codegen by removing freeze instructions. I modified clang by renaming `enable_noundef_analysis` flag to `disable-noundef-analysis` and turning it off by default. Test updates are made as a separate patch: D108453 Reviewed By: eugenis Differential Revision: https://reviews.llvm.org/D105169
21 lines
588 B
Plaintext
21 lines
588 B
Plaintext
// RUN: %clang_cc1 -x objective-c++ -triple x86_64-apple-darwin10 -fobjc-runtime=macosx-fragile-10.5 -emit-llvm -o - %s | FileCheck %s
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// rdar://8604515
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@interface I {}
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-(unsigned int&)referenceCount;
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@end
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@interface MyClass
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+(int)writeBlip:(I*)srcBlip;
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@end
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@implementation MyClass
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+(int)writeBlip:(I*)srcBlip{
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return ([srcBlip referenceCount] == 0);
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}
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@end
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// CHECK: [[T:%.*]] = call noundef nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) i32* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend
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// CHECK: [[U:%.*]] = load i32, i32* [[T]]
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// CHECK: [[V:%.*]] = icmp eq i32 [[U]], 0
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