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[X86] Change getHostCPUName fallback code to not select 'x86-64' for unknown CPUs in family 6 that has 64-bit support but not any newer SSE features. Use 'core2' instead 

We know that's the earliest CPU with 64-bit support. x86-64 has taken on a role of representing a more modern 64-bit CPU so we probably shouldn't be using that when we can't identify things.

llvm-svn: 317229
This commit is contained in:
Craig Topper 2017-11-02 19:13:32 +00:00
parent a15c4deb7b
commit a233e16cd8
1 changed files with 7 additions and 2 deletions
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9
llvm/lib/Support/Host.cpp
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@ -794,8 +794,13 @@ getIntelProcessorTypeAndSubtype(unsigned Family, unsigned Model,
break;
}
if (Features2 & (1 << (FEATURE_EM64T - 32))) {
*Type = INTEL_X86_64;
break; // x86-64
*Type = INTEL_CORE2; // "core2"
*Subtype = INTEL_CORE2_65;
break;
}
if (Features & (1 << FEATURE_SSE3)) {
*Type = INTEL_CORE_DUO;
break;
}
if (Features & (1 << FEATURE_SSE2)) {
*Type = INTEL_PENTIUM_M;