[PATCH] D62368: Add support for Hygon Dhyana processor

[Jinke Fan via Phabricator via llvm-commits]

fanjinke created this revision.
Herald added projects: clang, Sanitizers, LLVM.
Herald added subscribers: llvm-commits, Sanitizers, cfe-commits.

This patch adds vendor id detection for Hygon Dhyana CPUs.

More details can be found on:

  http://lkml.kernel.org/r/5ce86123a7b9dad925ac583d88d2f921040e859b.1538583282.git.puwen@hygon.cn

Result of "make check":
[100%] Running the LLVM regression tests
Testing Time: 671.13s

  Expected Passes    : 30229
  Expected Failures  : 149
  Unsupported Tests  : 673

[100%] Built target check-llvm
Scanning dependencies of target check
[100%] Built target check


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D62368

Files:
  clang/lib/Headers/cpuid.h
  compiler-rt/lib/scudo/scudo_utils.cpp
  compiler-rt/lib/scudo/standalone/checksum.cc


Index: compiler-rt/lib/scudo/standalone/checksum.cc
===================================================================
--- compiler-rt/lib/scudo/standalone/checksum.cc
+++ compiler-rt/lib/scudo/standalone/checksum.cc
@@ -39,7 +39,9 @@
                        (Ecx == signature_INTEL_ecx);
   const bool IsAMD = (Ebx == signature_AMD_ebx) && (Edx == signature_AMD_edx) &&
                      (Ecx == signature_AMD_ecx);
-  if (!IsIntel && !IsAMD)
+  const bool IsHygon = (Ebx == signature_HYGON_ebx) && (Edx == signature_HYGON_edx) &&
+                       (Ecx == signature_HYGON_ecx);
+  if (!IsIntel && !IsAMD && !IsHygon)
     return false;
   __get_cpuid(1, &Eax, &Ebx, &Ecx, &Edx);
   return !!(Ecx & bit_SSE4_2);
Index: compiler-rt/lib/scudo/scudo_utils.cpp
===================================================================
--- compiler-rt/lib/scudo/scudo_utils.cpp
+++ compiler-rt/lib/scudo/scudo_utils.cpp
@@ -71,7 +71,10 @@
   const bool IsAMD = (Ebx == signature_AMD_ebx) &&
                      (Edx == signature_AMD_edx) &&
                      (Ecx == signature_AMD_ecx);
-  if (!IsIntel && !IsAMD)
+  const bool IsHygon = (Ebx == signature_HYGON_ebx) &&
+                       (Edx == signature_HYGON_edx) &&
+                       (Ecx == signature_HYGON_ecx);
+  if (!IsIntel && !IsAMD && !IsHygon)
     return false;
   __get_cpuid(1, &Eax, &Ebx, &Ecx, &Edx);
   return !!(Ecx & bit_SSE4_2);
Index: clang/lib/Headers/cpuid.h
===================================================================
--- clang/lib/Headers/cpuid.h
+++ clang/lib/Headers/cpuid.h
@@ -24,6 +24,10 @@
 #define signature_CYRIX_ebx 0x69727943
 #define signature_CYRIX_edx 0x736e4978
 #define signature_CYRIX_ecx 0x64616574
+/* HYGON:   "HygonGenuine" */
+#define signature_HYGON_ebx 0x6f677948
+#define signature_HYGON_edx 0x6e65476e
+#define signature_HYGON_ecx 0x656e6975
 /* INTEL:   "GenuineIntel" */
 #define signature_INTEL_ebx 0x756e6547
 #define signature_INTEL_edx 0x49656e69


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