diff options
Diffstat (limited to 'lib/Target/X86/X86TargetMachine.cpp')
| -rw-r--r-- | lib/Target/X86/X86TargetMachine.cpp | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/lib/Target/X86/X86TargetMachine.cpp b/lib/Target/X86/X86TargetMachine.cpp index 2330182372..def4f9cfa4 100644 --- a/lib/Target/X86/X86TargetMachine.cpp +++ b/lib/Target/X86/X86TargetMachine.cpp @@ -26,6 +26,7 @@ using namespace llvm; X86VectorEnum llvm::X86Vector = NoSSE; +bool llvm::X86ScalarSSE = false; /// X86TargetMachineModule - Note that this is used on hosts that cannot link /// in a library unless there are references into the library. In particular, @@ -41,8 +42,11 @@ namespace { cl::opt<bool> DisableOutput("disable-x86-llc-output", cl::Hidden, cl::desc("Disable the X86 asm printer, for use " "when profiling the code generator.")); + cl::opt<bool, true> EnableSSEFP("enable-sse-scalar-fp", + cl::desc("Perform FP math in SSE regs instead of the FP stack"), + cl::location(X86ScalarSSE), + cl::init(false)); -#if 0 // FIXME: This should eventually be handled with target triples and // subtarget support! cl::opt<X86VectorEnum, true> @@ -54,7 +58,6 @@ namespace { clEnumValN(SSE3, "sse3", " Enable SSE, SSE2, and SSE3 support"), clEnumValEnd), cl::location(X86Vector), cl::init(NoSSE)); -#endif // Register the target. RegisterTarget<X86TargetMachine> X("x86", " IA-32 (Pentium and above)"); @@ -91,6 +94,8 @@ X86TargetMachine::X86TargetMachine(const Module &M, IntrinsicLowering *IL) : TargetMachine("X86", IL, true, 4, 4, 4, 4, 4), FrameInfo(TargetFrameInfo::StackGrowsDown, 8, -4), JITInfo(*this) { + // Scalar SSE FP requires at least SSE2 + X86ScalarSSE &= X86Vector >= SSE2; } |