diff options
Diffstat (limited to 'lib/VMCore/Instructions.cpp')
| -rw-r--r-- | lib/VMCore/Instructions.cpp | 84 |
1 files changed, 29 insertions, 55 deletions
diff --git a/lib/VMCore/Instructions.cpp b/lib/VMCore/Instructions.cpp index 91f0febf34..8f4eabeb8a 100644 --- a/lib/VMCore/Instructions.cpp +++ b/lib/VMCore/Instructions.cpp @@ -2269,55 +2269,43 @@ bool CastInst::isCastable(const Type *SrcTy, const Type *DestTy) { unsigned DestBits = DestTy->getPrimitiveSizeInBits(); // 0 for ptr // Run through the possibilities ... - if (DestTy->isIntegerTy()) { // Casting to integral - if (SrcTy->isIntegerTy()) { // Casting from integral + if (DestTy->isIntegerTy()) { // Casting to integral + if (SrcTy->isIntegerTy()) { // Casting from integral return true; - } else if (SrcTy->isFloatingPointTy()) { // Casting from floating pt + } else if (SrcTy->isFloatingPointTy()) { // Casting from floating pt return true; - } else if (const VectorType *PTy = dyn_cast<VectorType>(SrcTy)) { - // Casting from vector - return DestBits == PTy->getBitWidth(); + } else if (SrcTy->isVectorTy()) { // Casting from vector + return DestBits == SrcBits; } else { // Casting from something else return SrcTy->isPointerTy(); } - } else if (DestTy->isFloatingPointTy()) { // Casting to floating pt - if (SrcTy->isIntegerTy()) { // Casting from integral + } else if (DestTy->isFloatingPointTy()) { // Casting to floating pt + if (SrcTy->isIntegerTy()) { // Casting from integral return true; - } else if (SrcTy->isFloatingPointTy()) { // Casting from floating pt + } else if (SrcTy->isFloatingPointTy()) { // Casting from floating pt return true; - } else if (const VectorType *PTy = dyn_cast<VectorType>(SrcTy)) { - // Casting from vector - return DestBits == PTy->getBitWidth(); + } else if (SrcTy->isVectorTy()) { // Casting from vector + return DestBits == SrcBits; } else { // Casting from something else return false; } - } else if (const VectorType *DestPTy = dyn_cast<VectorType>(DestTy)) { - // Casting to vector - if (const VectorType *SrcPTy = dyn_cast<VectorType>(SrcTy)) { - // Casting from vector - return DestPTy->getBitWidth() == SrcPTy->getBitWidth(); - } else if (DestPTy->getBitWidth() == SrcBits) { - return true; // float/int -> vector - } else if (SrcTy->isX86_MMXTy()) { - return DestPTy->getBitWidth() == 64; // MMX to 64-bit vector - } else { - return false; - } + } else if (DestTy->isVectorTy()) { // Casting to vector + return DestBits == SrcBits; } else if (DestTy->isPointerTy()) { // Casting to pointer - if (SrcTy->isPointerTy()) { // Casting from pointer + if (SrcTy->isPointerTy()) { // Casting from pointer return true; - } else if (SrcTy->isIntegerTy()) { // Casting from integral + } else if (SrcTy->isIntegerTy()) { // Casting from integral return true; - } else { // Casting from something else + } else { // Casting from something else return false; } } else if (DestTy->isX86_MMXTy()) { - if (const VectorType *SrcPTy = dyn_cast<VectorType>(SrcTy)) { - return SrcPTy->getBitWidth() == 64; // 64-bit vector to MMX + if (SrcTy->isVectorTy()) { + return DestBits == SrcBits; // 64-bit vector to MMX } else { return false; } - } else { // Casting to something else + } else { // Casting to something else return false; } } @@ -2371,10 +2359,9 @@ CastInst::getCastOpcode( return FPToSI; // FP -> sint else return FPToUI; // FP -> uint - } else if (const VectorType *PTy = dyn_cast<VectorType>(SrcTy)) { - assert(DestBits == PTy->getBitWidth() && - "Casting vector to integer of different width"); - PTy = NULL; + } else if (SrcTy->isVectorTy()) { + assert(DestBits == SrcBits && + "Casting vector to integer of different width"); return BitCast; // Same size, no-op cast } else { assert(SrcTy->isPointerTy() && @@ -2395,29 +2382,17 @@ CastInst::getCastOpcode( } else { return BitCast; // same size, no-op cast } - } else if (const VectorType *PTy = dyn_cast<VectorType>(SrcTy)) { - assert(DestBits == PTy->getBitWidth() && + } else if (SrcTy->isVectorTy()) { + assert(DestBits == SrcBits && "Casting vector to floating point of different width"); - PTy = NULL; return BitCast; // same size, no-op cast } else { llvm_unreachable("Casting pointer or non-first class to float"); } - } else if (const VectorType *DestPTy = dyn_cast<VectorType>(DestTy)) { - if (const VectorType *SrcPTy = dyn_cast<VectorType>(SrcTy)) { - assert(DestPTy->getBitWidth() == SrcPTy->getBitWidth() && - "Casting vector to vector of different widths"); - (void)SrcPTy; - return BitCast; // vector -> vector - } else if (DestPTy->getBitWidth() == SrcBits) { - return BitCast; // float/int -> vector - } else if (SrcTy->isX86_MMXTy()) { - assert(DestPTy->getBitWidth()==64 && - "Casting X86_MMX to vector of wrong width"); - return BitCast; // MMX to 64-bit vector - } else { - assert(!"Illegal cast to vector (wrong type or size)"); - } + } else if (DestTy->isVectorTy()) { + assert(DestBits == SrcBits && + "Illegal cast to vector (wrong type or size)"); + return BitCast; } else if (DestTy->isPointerTy()) { if (SrcTy->isPointerTy()) { return BitCast; // ptr -> ptr @@ -2427,9 +2402,8 @@ CastInst::getCastOpcode( assert(!"Casting pointer to other than pointer or int"); } } else if (DestTy->isX86_MMXTy()) { - if (isa<VectorType>(SrcTy)) { - assert(cast<VectorType>(SrcTy)->getBitWidth() == 64 && - "Casting vector of wrong width to X86_MMX"); + if (SrcTy->isVectorTy()) { + assert(DestBits == SrcBits && "Casting vector of wrong width to X86_MMX"); return BitCast; // 64-bit vector to MMX } else { assert(!"Illegal cast to X86_MMX"); |