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Code Issues 2 Packages Projects Releases 7 Wiki Activity

Clean up and improve Zen CPU detection

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This commit is contained in:
xddxd
2022-09-26 19:05:23 +03:00
committed by Ivan
parent bc7b2ed172
commit 9b52b6c39a
1 changed files with 5 additions and 11 deletions
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lib/Support/Host.cpp
+5 -11
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@@ -1025,17 +1025,14 @@ getAMDProcessorTypeAndSubtype(unsigned Family, unsigned Model,
*Type = X86::AMD_BTVER2;
break;
case 23:
CPU = "znver1";
*Type = X86::AMDFAM17H;
if ((Model >= 0x30 && Model <= 0x3f) || Model == 0x71) {
if (Model >= 0x30) {
CPU = "znver2";
*Subtype = X86::AMDFAM17H_ZNVER2;
break; // 30h-3fh, 71h: Zen2
}
if (Model <= 0x0f) {
*Subtype = X86::AMDFAM17H_ZNVER1;
break; // 00h-0Fh: Zen1
break; // >30h: Zen2
}
CPU = "znver1";
*Subtype = X86::AMDFAM17H_ZNVER1;
break;
case 25:
if (testFeature(X86::FEATURE_AVX512VBMI2)) {
@@ -1046,10 +1043,7 @@ getAMDProcessorTypeAndSubtype(unsigned Family, unsigned Model,
}
CPU = "znver3";
*Type = X86::AMDFAM19H;
if (Model <= 0x0f || Model == 0x21) {
*Subtype = X86::AMDFAM19H_ZNVER3;
break; // 00h-0Fh: Zen3
}
*Subtype = X86::AMDFAM19H_ZNVER3;
break;
default:
break; // Unknown AMD CPU.