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Add plumbing to support programatically defining __SSE2__ and friends, 

even though we still hard code sse2 for now.  No support for 3dnow or sse4a,
but someone could add that if they desired.

llvm-svn: 65886
This commit is contained in:
Chris Lattner 2009-03-02 22:40:39 +00:00
parent ecd49037ec
commit 96e43578fc
1 changed files with 27 additions and 6 deletions
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33
clang/lib/Basic/Targets.cpp
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@ -415,8 +415,12 @@ const TargetInfo::GCCRegAlias GCCRegAliases[] = {
// X86 target abstract base class; x86-32 and x86-64 are very close, so
// most of the implementation can be shared.
class X86TargetInfo : public TargetInfo {
enum X86SSEEnum {
NoMMXSSE, MMX, SSE1, SSE2, SSE3, SSSE3, SSE41, SSE42
} SSELevel;
public:
X86TargetInfo(const std::string& triple) : TargetInfo(triple) {
X86TargetInfo(const std::string& triple)
: TargetInfo(triple), SSELevel(SSE2) {
LongDoubleFormat = &llvm::APFloat::x87DoubleExtended;
}
virtual void getTargetBuiltins(const Builtin::Info *&Records,
@ -485,12 +489,29 @@ void X86TargetInfo::getTargetDefines(std::vector<char> &Defs) const {
Define(Defs, "__nocona");
Define(Defs, "__nocona__");
Define(Defs, "__tune_nocona__");
Define(Defs, "__SSE2_MATH__");
Define(Defs, "__SSE2__");
Define(Defs, "__SSE_MATH__");
Define(Defs, "__SSE__");
Define(Defs, "__MMX__");
Define(Defs, "__REGISTER_PREFIX__", "");
// Each case falls through to the previous one here.
switch (SSELevel) {
case SSE42:
Define(Defs, "__SSE4_2__");
case SSE41:
Define(Defs, "__SSE4_1__");
case SSSE3:
Define(Defs, "__SSSE3__");
case SSE3:
Define(Defs, "__SSE3__");
case SSE2:
Define(Defs, "__SSE2__");
Define(Defs, "__SSE2_MATH__"); // -mfp-math=sse always implied.
case SSE1:
Define(Defs, "__SSE__");
Define(Defs, "__SSE_MATH__"); // -mfp-math=sse always implied.
case MMX:
Define(Defs, "__MMX__");
case NoMMXSSE:
break;
}
}