Reland "[X86] Assign AVX10_1 feature priority to align with gcc. (#94557)"

[FreddyLeaf]

This reverts commit c007883.

[llvmbot]

@llvm/pr-subscribers-backend-x86

Author: Freddy Ye (FreddyLeaf)

Changes

This reverts commit c007883.

---

Full diff: https://github.com/llvm/llvm-project/pull/94734.diff

2 Files Affected:

• (modified) llvm/include/llvm/TargetParser/X86TargetParser.def (+2-2)
• (modified) llvm/lib/TargetParser/X86TargetParser.cpp (+2-2)

diff --git a/llvm/include/llvm/TargetParser/X86TargetParser.def b/llvm/include/llvm/TargetParser/X86TargetParser.def
index 8daa8a689c95f..f10cede0734e4 100644
--- a/llvm/include/llvm/TargetParser/X86TargetParser.def
+++ b/llvm/include/llvm/TargetParser/X86TargetParser.def
@@ -250,8 +250,8 @@ X86_FEATURE_COMPAT(SHA512,          "sha512",                 0)
 X86_FEATURE_COMPAT(SM4,             "sm4",                    0)
 X86_FEATURE       (EGPR,            "egpr")
 X86_FEATURE_COMPAT(USERMSR,         "usermsr",                0)
-X86_FEATURE_COMPAT(AVX10_1,         "avx10.1-256",            0)
-X86_FEATURE_COMPAT(AVX10_1_512,     "avx10.1-512",            0)
+X86_FEATURE_COMPAT(AVX10_1,         "avx10.1-256",           36)
+X86_FEATURE_COMPAT(AVX10_1_512,     "avx10.1-512",           37)
 // These features aren't really CPU features, but the frontend can set them.
 X86_FEATURE       (RETPOLINE_EXTERNAL_THUNK,    "retpoline-external-thunk")
 X86_FEATURE       (RETPOLINE_INDIRECT_BRANCHES, "retpoline-indirect-branches")
diff --git a/llvm/lib/TargetParser/X86TargetParser.cpp b/llvm/lib/TargetParser/X86TargetParser.cpp
index e3802380d2bee..eda0c7f5da15a 100644
--- a/llvm/lib/TargetParser/X86TargetParser.cpp
+++ b/llvm/lib/TargetParser/X86TargetParser.cpp
@@ -748,13 +748,13 @@ unsigned llvm::X86::getFeaturePriority(ProcessorFeatures Feat) {
 #ifndef NDEBUG
   // Check that priorities are set properly in the .def file. We expect that
   // "compat" features are assigned non-duplicate consecutive priorities
-  // starting from one (1, ..., 35) and multiple zeros.
+  // starting from one (1, ..., 37) and multiple zeros.
 #define X86_FEATURE_COMPAT(ENUM, STR, PRIORITY) PRIORITY,
   unsigned Priorities[] = {
 #include "llvm/TargetParser/X86TargetParser.def"
   };
   std::array<unsigned, std::size(Priorities)> HelperList;
-  const size_t MaxPriority = 35;
+  const size_t MaxPriority = 37;
   std::iota(HelperList.begin(), HelperList.begin() + MaxPriority + 1, 0);
   for (size_t i = MaxPriority + 1; i != std::size(Priorities); ++i)
     HelperList[i] = 0;

[phoebewang]

LGTM.