Author: Phoebe Wang Date: 2024-05-01T11:32:03-07:00 New Revision: a7b8b890600a33e0c88d639f311f1d73ccb1c8d2
URL: https://github.com/llvm/llvm-project/commit/a7b8b890600a33e0c88d639f311f1d73ccb1c8d2 DIFF: https://github.com/llvm/llvm-project/commit/a7b8b890600a33e0c88d639f311f1d73ccb1c8d2.diff LOG: [X86] Enable EVEX512 when host CPU has AVX512 (#90479) This is used when -march=native run on an unknown CPU to old version of LLVM. (cherry picked from commit b3291793f11924a3b62601aabebebdcfbb12a9a1) Added: Modified: llvm/lib/TargetParser/Host.cpp Removed: ################################################################################ diff --git a/llvm/lib/TargetParser/Host.cpp b/llvm/lib/TargetParser/Host.cpp index 4466d50458e198..1adef15771fa17 100644 --- a/llvm/lib/TargetParser/Host.cpp +++ b/llvm/lib/TargetParser/Host.cpp @@ -1266,8 +1266,10 @@ static void getAvailableFeatures(unsigned ECX, unsigned EDX, unsigned MaxLeaf, setFeature(X86::FEATURE_AVX2); if (HasLeaf7 && ((EBX >> 8) & 1)) setFeature(X86::FEATURE_BMI2); - if (HasLeaf7 && ((EBX >> 16) & 1) && HasAVX512Save) + if (HasLeaf7 && ((EBX >> 16) & 1) && HasAVX512Save) { setFeature(X86::FEATURE_AVX512F); + setFeature(X86::FEATURE_EVEX512); + } if (HasLeaf7 && ((EBX >> 17) & 1) && HasAVX512Save) setFeature(X86::FEATURE_AVX512DQ); if (HasLeaf7 && ((EBX >> 19) & 1)) @@ -1772,6 +1774,7 @@ bool sys::getHostCPUFeatures(StringMap<bool> &Features) { Features["rtm"] = HasLeaf7 && ((EBX >> 11) & 1); // AVX512 is only supported if the OS supports the context save for it. Features["avx512f"] = HasLeaf7 && ((EBX >> 16) & 1) && HasAVX512Save; + Features["evex512"] = Features["avx512f"]; Features["avx512dq"] = HasLeaf7 && ((EBX >> 17) & 1) && HasAVX512Save; Features["rdseed"] = HasLeaf7 && ((EBX >> 18) & 1); Features["adx"] = HasLeaf7 && ((EBX >> 19) & 1); _______________________________________________ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits
