Add x86 CLMUL (Carry-less multiplication) cpu feature

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109206 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td
index baf072838ce0ebe4a1be8e08b41fef7b408662cd..8d370fe5f115b8a6fc685e4820b83f53c8bffd3e 100644 (file)
--- a/lib/Target/X86/X86InstrInfo.td
+++ b/lib/Target/X86/X86InstrInfo.td
@@ -357,6 +357,7 @@ def HasSSE41     : Predicate<"Subtarget->hasSSE41()">;
 def HasSSE42     : Predicate<"Subtarget->hasSSE42()">;
 def HasSSE4A     : Predicate<"Subtarget->hasSSE4A()">;
 def HasAVX       : Predicate<"Subtarget->hasAVX()">;
+def HasCLMUL     : Predicate<"Subtarget->hasCLMUL()">;
 def HasFMA3      : Predicate<"Subtarget->hasFMA3()">;
 def HasFMA4      : Predicate<"Subtarget->hasFMA4()">;
 def FPStackf32   : Predicate<"!Subtarget->hasSSE1()">;

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)

diff --git a/lib/Target/X86/X86Subtarget.h b/lib/Target/X86/X86Subtarget.h
index 486dbc4e2e900a259d3b7f425d5bd69440981fd2..531fb04bd601c9661184573f5749a3a4f4defbb4 100644 (file)
--- a/lib/Target/X86/X86Subtarget.h
+++ b/lib/Target/X86/X86Subtarget.h
@@ -74,6 +74,9 @@ protected:
   /// HasAES - Target has AES instructions
   bool HasAES;
 
+  /// HasCLMUL - Target has carry-less multiplication
+  bool HasCLMUL;
+
   /// HasFMA3 - Target has 3-operand fused multiply-add
   bool HasFMA3;
 
@@ -149,6 +152,7 @@ public:
   bool has3DNowA() const { return X863DNowLevel >= ThreeDNowA; }
   bool hasAVX() const { return HasAVX; }
   bool hasAES() const { return HasAES; }
+  bool hasCLMUL() const { return HasCLMUL; }
   bool hasFMA3() const { return HasFMA3; }
   bool hasFMA4() const { return HasFMA4; }
   bool isBTMemSlow() const { return IsBTMemSlow; }