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Add x86 CLMUL (Carry-less multiplication) cpu feature 

llvm-svn: 109206
This commit is contained in:
Bruno Cardoso Lopes 2010-07-23 01:17:51 +00:00
parent faf5c76114
commit 09dc24beac
3 changed files with 10 additions and 3 deletions
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1
llvm/lib/Target/X86/X86InstrInfo.td
View File

@ -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()">;

8
llvm/lib/Target/X86/X86Subtarget.cpp
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@ -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)

4
llvm/lib/Target/X86/X86Subtarget.h
View File

@ -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; }