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[X86] Simplify the getHostCPUName for AMD family 6 and 15. 

As far as I can tell we can simply distinguish based on features rather than model number. Many of the strings we were previously using are treated the same by the backend.

llvm-svn: 307884
This commit is contained in:
Craig Topper 2017-07-13 06:34:10 +00:00
parent 2246167362
commit f3de5eb7c6
1 changed files with 11 additions and 38 deletions
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49
llvm/lib/Support/Host.cpp
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@ -336,13 +336,10 @@ enum ProcessorSubtypes {
AMDPENTIUM_K62, AMDPENTIUM_K62,
AMDPENTIUM_K63, AMDPENTIUM_K63,
AMDPENTIUM_GEODE, AMDPENTIUM_GEODE,
AMDATHLON_TBIRD, AMDATHLON_CLASSIC,
AMDATHLON_MP,
AMDATHLON_XP, AMDATHLON_XP,
AMDATHLON_K8,
AMDATHLON_K8SSE3, AMDATHLON_K8SSE3,
AMDATHLON_OPTERON,
AMDATHLON_FX,
AMDATHLON_64,
CPU_SUBTYPE_MAX CPU_SUBTYPE_MAX
}; };
@ -868,38 +865,20 @@ static void getAMDProcessorTypeAndSubtype(unsigned Family, unsigned Model,
break; break;
case 6: case 6:
*Type = AMDATHLON; *Type = AMDATHLON;
switch (Model) { if (Features & (1 << FEATURE_SSE)) {
case 4:
*Subtype = AMDATHLON_TBIRD;
break; // "athlon-tbird"
case 6:
case 7:
case 8:
*Subtype = AMDATHLON_MP;
break; // "athlon-mp"
case 10:
*Subtype = AMDATHLON_XP; *Subtype = AMDATHLON_XP;
break; // "athlon-xp" break; // "athlon-xp"
} }
break; *Subtype = AMDATHLON_CLASSIC;
break; // "athlon"
case 15: case 15:
*Type = AMDATHLON; *Type = AMDATHLON;
if (Features & (1 << FEATURE_SSE3)) { if (Features & (1 << FEATURE_SSE3)) {
*Subtype = AMDATHLON_K8SSE3; *Subtype = AMDATHLON_K8SSE3;
break; // "k8-sse3" break; // "k8-sse3"
} }
switch (Model) { *Subtype = AMDATHLON_K8;
case 1: break; // "k8"
*Subtype = AMDATHLON_OPTERON;
break; // "opteron"
case 5:
*Subtype = AMDATHLON_FX;
break; // "athlon-fx"; also opteron
default:
*Subtype = AMDATHLON_64;
break; // "athlon64"
}
break;
case 16: case 16:
*Type = AMDFAM10H; // "amdfam10" *Type = AMDFAM10H; // "amdfam10"
switch (Model) { switch (Model) {
@ -1168,20 +1147,14 @@ StringRef sys::getHostCPUName() {
} }
case AMDATHLON: case AMDATHLON:
switch (Subtype) { switch (Subtype) {
case AMDATHLON_TBIRD: case AMDATHLON_CLASSIC:
return "athlon-tbird"; return "athlon";
case AMDATHLON_MP:
return "athlon-mp";
case AMDATHLON_XP: case AMDATHLON_XP:
return "athlon-xp"; return "athlon-xp";
case AMDATHLON_K8:
return "k8";
case AMDATHLON_K8SSE3: case AMDATHLON_K8SSE3:
return "k8-sse3"; return "k8-sse3";
case AMDATHLON_OPTERON:
return "opteron";
case AMDATHLON_FX:
return "athlon-fx";
case AMDATHLON_64:
return "athlon64";
default: default:
llvm_unreachable("Unexpected subtype!"); llvm_unreachable("Unexpected subtype!");
} }