Add x86 CLMUL (Carry-less multiplication) cpu feature

[oota-llvm.git] / lib / Target / X86 / X86Subtarget.cpp

diff --git a/lib/Target/X86/X86Subtarget.cpp b/lib/Target/X86/X86Subtarget.cpp
index 4a10be518f03f9b4c78e37648ec2b2e5a53b4c97..88a5edb9a8ba772ef78b766b023bf22af6904cf1 100644 (file)
--- a/lib/Target/X86/X86Subtarget.cpp
+++ b/lib/Target/X86/X86Subtarget.cpp
@@ -260,9 +260,10 @@ void X86Subtarget::AutoDetectSubtargetFeatures() {
   bool IsIntel = memcmp(text.c, "GenuineIntel", 12) == 0;
   bool IsAMD   = !IsIntel && memcmp(text.c, "AuthenticAMD", 12) == 0;
 
-  HasFMA3 = IsIntel && ((ECX >> 12) & 0x1);
-  HasAVX = ((ECX >> 28) & 0x1);
-  HasAES = IsIntel && ((ECX >> 25) & 0x1);
+  HasCLMUL = IsIntel && ((ECX >> 1) & 0x1);
+  HasFMA3  = IsIntel && ((ECX >> 12) & 0x1);
+  HasAVX   = ((ECX >> 28) & 0x1);
+  HasAES   = IsIntel && ((ECX >> 25) & 0x1);
 
   if (IsIntel || IsAMD) {
     // Determine if bit test memory instructions are slow.
@@ -291,6 +292,7 @@ X86Subtarget::X86Subtarget(const std::string &TT, const std::string &FS,
   , HasSSE4A(false)
   , HasAVX(false)
   , HasAES(false)
+  , HasCLMUL(false)
   , HasFMA3(false)
   , HasFMA4(false)
   , IsBTMemSlow(false)