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
23 lines
881 B
Objective-C
23 lines
881 B
Objective-C
// RUN: %clang_cc1 -fpass-by-value-is-noalias -triple arm64-apple-iphoneos -emit-llvm -disable-llvm-optzns -fobjc-runtime-has-weak -fobjc-arc -fobjc-dispatch-method=mixed %s -o - 2>&1 | FileCheck --check-prefix=WITH_NOALIAS %s
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// RUN: %clang_cc1 -triple arm64-apple-iphoneos -emit-llvm -disable-llvm-optzns -fobjc-runtime-has-weak -fobjc-arc -fobjc-dispatch-method=mixed %s -o - 2>&1 | FileCheck --check-prefix=NO_NOALIAS %s
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@interface Bar
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@property char value;
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@end
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// A struct large enough so it is not passed in registers on ARM64, but with a
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// weak reference, so noalias should not be added even with
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// -fpass-by-value-is-noalias.
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struct Foo {
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int a;
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int b;
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int c;
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int d;
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int e;
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Bar *__weak f;
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};
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// WITH_NOALIAS: define{{.*}} void @take(%struct.Foo* noundef %arg)
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// NO_NOALIAS: define{{.*}} void @take(%struct.Foo* noundef %arg)
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void take(struct Foo arg) {}
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