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d983270976
This matches the implementation of the gcc support for the same feature, including checking the values set up by libgcc at runtime. The structure looks like this: unsigned int __cpu_vendor; unsigned int __cpu_type; unsigned int __cpu_subtype; unsigned int __cpu_features[1]; with a set of enums to match various fields that are field out after parsing the output of the cpuid instruction. This also adds a set of errors checking for valid input (and cpu). compiler-rt support for this and the other builtins in this family (__builtin_cpu_init and __builtin_cpu_is) are forthcoming. llvm-svn: 240994
22 lines
564 B
C
22 lines
564 B
C
// RUN: %clang_cc1 -fsyntax-only -triple x86_64-pc-linux-gnu -verify %s
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// RUN: %clang_cc1 -fsyntax-only -triple powerpc64le-linux-gnu -verify %s
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extern void a(const char *);
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extern const char *str;
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int main() {
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#ifdef __x86_64__
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if (__builtin_cpu_supports("ss")) // expected-error {{invalid cpu feature string}}
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a("sse4.2");
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if (__builtin_cpu_supports(str)) // expected-error {{expression is not a string literal}}
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a(str);
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#else
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if (__builtin_cpu_supports("vsx")) // expected-error {{use of unknown builtin}}
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a("vsx");
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#endif
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return 0;
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}
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