diff options
Diffstat (limited to 'lib/Target/ARM/ARMSubtarget.cpp')
| -rw-r--r-- | lib/Target/ARM/ARMSubtarget.cpp | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/lib/Target/ARM/ARMSubtarget.cpp b/lib/Target/ARM/ARMSubtarget.cpp index e11314d4fc..739300e4ef 100644 --- a/lib/Target/ARM/ARMSubtarget.cpp +++ b/lib/Target/ARM/ARMSubtarget.cpp @@ -19,6 +19,7 @@ #include "llvm/IR/Function.h" #include "llvm/Support/CommandLine.h" #include "llvm/Target/TargetInstrInfo.h" +#include "llvm/Target/TargetOptions.h" #define GET_SUBTARGETINFO_TARGET_DESC #define GET_SUBTARGETINFO_CTOR @@ -42,12 +43,13 @@ StrictAlign("arm-strict-align", cl::Hidden, cl::desc("Disallow all unaligned memory accesses")); ARMSubtarget::ARMSubtarget(const std::string &TT, const std::string &CPU, - const std::string &FS) + const std::string &FS, const TargetOptions &Options) : ARMGenSubtargetInfo(TT, CPU, FS) , ARMProcFamily(Others) , stackAlignment(4) , CPUString(CPU) , TargetTriple(TT) + , Options(Options) , TargetABI(ARM_ABI_APCS) { initializeEnvironment(); resetSubtargetFeatures(CPU, FS); @@ -92,6 +94,7 @@ void ARMSubtarget::initializeEnvironment() { AllowsUnalignedMem = false; Thumb2DSP = false; UseNaClTrap = false; + UnsafeFPMath = false; } void ARMSubtarget::resetSubtargetFeatures(const MachineFunction *MF) { @@ -162,6 +165,12 @@ void ARMSubtarget::resetSubtargetFeatures(StringRef CPU, StringRef FS) { // configuration. if (!StrictAlign && hasV6Ops() && isTargetDarwin()) AllowsUnalignedMem = true; + + // NEON f32 ops are non-IEEE 754 compliant. Darwin is ok with it by default. + uint64_t Bits = getFeatureBits(); + if ((Bits & ARM::ProcA5 || Bits & ARM::ProcA8) && // Where this matters + (Options.UnsafeFPMath || isTargetDarwin())) + UseNEONForSinglePrecisionFP = true; } /// GVIsIndirectSymbol - true if the GV will be accessed via an indirect symbol. |