diff options
Diffstat (limited to 'lib/Target/NVPTX/NVPTXAsmPrinter.h')
-rw-r--r-- | lib/Target/NVPTX/NVPTXAsmPrinter.h | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/lib/Target/NVPTX/NVPTXAsmPrinter.h b/lib/Target/NVPTX/NVPTXAsmPrinter.h index 71624200d0..9a9c33b6f5 100644 --- a/lib/Target/NVPTX/NVPTXAsmPrinter.h +++ b/lib/Target/NVPTX/NVPTXAsmPrinter.h @@ -96,6 +96,7 @@ class LLVM_LIBRARY_VISIBILITY NVPTXAsmPrinter : public AsmPrinter { unsigned curpos; raw_ostream &O; NVPTXAsmPrinter &AP; + bool EmitGeneric; public: AggBuffer(unsigned _size, raw_ostream &_O, NVPTXAsmPrinter &_AP) @@ -104,6 +105,7 @@ class LLVM_LIBRARY_VISIBILITY NVPTXAsmPrinter : public AsmPrinter { size = _size; curpos = 0; numSymbols = 0; + EmitGeneric = AP.EmitGeneric; } ~AggBuffer() { delete[] buffer; } unsigned addBytes(unsigned char *Ptr, int Num, int Bytes) { @@ -155,7 +157,18 @@ class LLVM_LIBRARY_VISIBILITY NVPTXAsmPrinter : public AsmPrinter { const Value *v = Symbols[nSym]; if (const GlobalValue *GVar = dyn_cast<GlobalValue>(v)) { MCSymbol *Name = AP.getSymbol(GVar); - O << *Name; + PointerType *PTy = dyn_cast<PointerType>(GVar->getType()); + bool IsNonGenericPointer = false; + if (PTy && PTy->getAddressSpace() != 0) { + IsNonGenericPointer = true; + } + if (EmitGeneric && !isa<Function>(v) && !IsNonGenericPointer) { + O << "generic("; + O << *Name; + O << ")"; + } else { + O << *Name; + } } else if (const ConstantExpr *Cexpr = dyn_cast<ConstantExpr>(v)) { O << *nvptx::LowerConstant(Cexpr, AP); } else @@ -276,12 +289,27 @@ private: LineReader *reader; LineReader *getReader(std::string); + + // Used to control the need to emit .generic() in the initializer of + // module scope variables. + // Although ptx supports the hybrid mode like the following, + // .global .u32 a; + // .global .u32 b; + // .global .u32 addr[] = {a, generic(b)} + // we have difficulty representing the difference in the NVVM IR. + // + // Since the address value should always be generic in CUDA C and always + // be specific in OpenCL, we use this simple control here. + // + bool EmitGeneric; + public: NVPTXAsmPrinter(TargetMachine &TM, MCStreamer &Streamer) : AsmPrinter(TM, Streamer), nvptxSubtarget(TM.getSubtarget<NVPTXSubtarget>()) { CurrentBankselLabelInBasicBlock = ""; reader = NULL; + EmitGeneric = (nvptxSubtarget.getDrvInterface() == NVPTX::CUDA); } ~NVPTXAsmPrinter() { |