724f570ad2
This adds parsing and codegen support for tune in target attribute. I've implemented this so that arch in the target attribute implicitly disables tune from the command line. I'm not sure what gcc does here. But since -march implies -mtune. I assume 'arch' in the target attribute implies tune in the target attribute. Differential Revision: https://reviews.llvm.org/D86187
35 lines
2.0 KiB
C
35 lines
2.0 KiB
C
// RUN: %clang_cc1 -triple x86_64-linux-gnu -fsyntax-only -verify %s
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// RUN: %clang_cc1 -triple aarch64-linux-gnu -fsyntax-only -verify %s
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#ifdef __x86_64__
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int __attribute__((target("avx,sse4.2,arch=ivybridge"))) foo() { return 4; }
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//expected-error@+1 {{'target' attribute takes one argument}}
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int __attribute__((target())) bar() { return 4; }
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// no warning, tune is supported for x86
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int __attribute__((target("tune=sandybridge"))) baz() { return 4; }
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//expected-warning@+1 {{unsupported 'fpmath=' in the 'target' attribute string; 'target' attribute ignored}}
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int __attribute__((target("fpmath=387"))) walrus() { return 4; }
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//expected-warning@+1 {{unknown architecture 'hiss' in the 'target' attribute string; 'target' attribute ignored}}
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int __attribute__((target("avx,sse4.2,arch=hiss"))) meow() { return 4; }
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//expected-warning@+1 {{unsupported 'woof' in the 'target' attribute string; 'target' attribute ignored}}
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int __attribute__((target("woof"))) bark() { return 4; }
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// no warning, same as saying 'nothing'.
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int __attribute__((target("arch="))) turtle() { return 4; }
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//expected-warning@+1 {{unknown architecture 'hiss' in the 'target' attribute string; 'target' attribute ignored}}
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int __attribute__((target("arch=hiss,arch=woof"))) pine_tree() { return 4; }
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//expected-warning@+1 {{duplicate 'arch=' in the 'target' attribute string; 'target' attribute ignored}}
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int __attribute__((target("arch=ivybridge,arch=haswell"))) oak_tree() { return 4; }
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//expected-warning@+1 {{unsupported 'branch-protection' in the 'target' attribute string; 'target' attribute ignored}}
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int __attribute__((target("branch-protection=none"))) birch_tree() { return 5; }
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//expected-warning@+1 {{unknown tune CPU 'hiss' in the 'target' attribute string; 'target' attribute ignored}}
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int __attribute__((target("tune=hiss,tune=woof"))) apple_tree() { return 4; }
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#else
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// tune is not supported by other targets.
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//expected-warning@+1 {{unsupported 'tune=' in the 'target' attribute string; 'target' attribute ignored}}
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int __attribute__((target("tune=hiss"))) baz() { return 4; }
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#endif
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