forked from OSchip/llvm-project
49fac56ea3
The patch adds a possibility to make library calls on NVPTX. An important thing about library functions - they must be defined within the current module. This basically should guarantee that we produce a valid PTX assembly (without calls to not defined functions). The one who wants to use the libcalls is probably will have to link against compiler-rt or any other implementation. Currently, it's completely impossible to make library calls because of error LLVM ERROR: Cannot select: i32 = ExternalSymbol '...'. But we can lower ExternalSymbol to TargetExternalSymbol and verify if the function definition is available. Also, there was an issue with a DAG during legalisation. When we expand instruction into libcall, the inner call-chain isn't being "integrated" into outer chain. Since the last "data-flow" (call retval load) node is located in call-chain earlier than CALLSEQ_END node, the latter becomes a leaf and therefore a dead node (and is being removed quite fast). Proposed here solution relies on another data-flow pseudo nodes (ProxyReg) which purpose is only to keep CALLSEQ_END at legalisation and instruction selection phases - we remove the pseudo instructions before register scheduling phase. Patch by Denys Zariaiev! Differential Revision: https://reviews.llvm.org/D34708 llvm-svn: 350069 |
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| .. | ||
| InstPrinter | ||
| MCTargetDesc | ||
| TargetInfo | ||
| CMakeLists.txt | ||
| LLVMBuild.txt | ||
| ManagedStringPool.h | ||
| NVPTX.h | ||
| NVPTX.td | ||
| NVPTXAllocaHoisting.cpp | ||
| NVPTXAllocaHoisting.h | ||
| NVPTXAsmPrinter.cpp | ||
| NVPTXAsmPrinter.h | ||
| NVPTXAssignValidGlobalNames.cpp | ||
| NVPTXFrameLowering.cpp | ||
| NVPTXFrameLowering.h | ||
| NVPTXGenericToNVVM.cpp | ||
| NVPTXISelDAGToDAG.cpp | ||
| NVPTXISelDAGToDAG.h | ||
| NVPTXISelLowering.cpp | ||
| NVPTXISelLowering.h | ||
| NVPTXImageOptimizer.cpp | ||
| NVPTXInstrFormats.td | ||
| NVPTXInstrInfo.cpp | ||
| NVPTXInstrInfo.h | ||
| NVPTXInstrInfo.td | ||
| NVPTXIntrinsics.td | ||
| NVPTXLowerAggrCopies.cpp | ||
| NVPTXLowerAggrCopies.h | ||
| NVPTXLowerAlloca.cpp | ||
| NVPTXLowerArgs.cpp | ||
| NVPTXMCExpr.cpp | ||
| NVPTXMCExpr.h | ||
| NVPTXMachineFunctionInfo.h | ||
| NVPTXPeephole.cpp | ||
| NVPTXPrologEpilogPass.cpp | ||
| NVPTXProxyRegErasure.cpp | ||
| NVPTXRegisterInfo.cpp | ||
| NVPTXRegisterInfo.h | ||
| NVPTXRegisterInfo.td | ||
| NVPTXReplaceImageHandles.cpp | ||
| NVPTXSubtarget.cpp | ||
| NVPTXSubtarget.h | ||
| NVPTXTargetMachine.cpp | ||
| NVPTXTargetMachine.h | ||
| NVPTXTargetObjectFile.h | ||
| NVPTXTargetTransformInfo.cpp | ||
| NVPTXTargetTransformInfo.h | ||
| NVPTXUtilities.cpp | ||
| NVPTXUtilities.h | ||
| NVVMIntrRange.cpp | ||
| NVVMReflect.cpp | ||
| cl_common_defines.h | ||