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98500f2974
rather than 'unsigned' for their costs. For something like costs in particular there is a natural "negative" value, that of savings or saved cost. As a consequence, there is a lot of code that subtracts or creates negative values based on cost, all of which is prone to awkwardness or bugs when dealing with an unsigned type. Similarly, we *never* want these values to wrap, as that would cause Very Bad code generation (likely percieved as an infinite loop as we try to emit over 2^32 instructions or some such insanity). All around 'int' seems a much better fit for these basic metrics. I've added asserts to ensure that at least the TTI interface never returns negative numbers here. If we ever have a use case for negative numbers, we can remove this, but this way a bug where someone used '-1' to produce a 'very large' cost will be caught by the assert. This passes all tests, and is also UBSan clean. No functional change intended. Differential Revision: http://reviews.llvm.org/D11741 llvm-svn: 244080 |
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| .. | ||
| InstPrinter | ||
| MCTargetDesc | ||
| TargetInfo | ||
| cl_common_defines.h | ||
| CMakeLists.txt | ||
| LLVMBuild.txt | ||
| Makefile | ||
| ManagedStringPool.h | ||
| NVPTX.h | ||
| NVPTX.td | ||
| NVPTXAllocaHoisting.cpp | ||
| NVPTXAllocaHoisting.h | ||
| NVPTXAsmPrinter.cpp | ||
| NVPTXAsmPrinter.h | ||
| NVPTXAssignValidGlobalNames.cpp | ||
| NVPTXFavorNonGenericAddrSpaces.cpp | ||
| NVPTXFrameLowering.cpp | ||
| NVPTXFrameLowering.h | ||
| NVPTXGenericToNVVM.cpp | ||
| NVPTXImageOptimizer.cpp | ||
| NVPTXInstrFormats.td | ||
| NVPTXInstrInfo.cpp | ||
| NVPTXInstrInfo.h | ||
| NVPTXInstrInfo.td | ||
| NVPTXIntrinsics.td | ||
| NVPTXISelDAGToDAG.cpp | ||
| NVPTXISelDAGToDAG.h | ||
| NVPTXISelLowering.cpp | ||
| NVPTXISelLowering.h | ||
| NVPTXLowerAggrCopies.cpp | ||
| NVPTXLowerAggrCopies.h | ||
| NVPTXLowerAlloca.cpp | ||
| NVPTXLowerKernelArgs.cpp | ||
| NVPTXMachineFunctionInfo.h | ||
| NVPTXMCExpr.cpp | ||
| NVPTXMCExpr.h | ||
| NVPTXPeephole.cpp | ||
| NVPTXPrologEpilogPass.cpp | ||
| NVPTXRegisterInfo.cpp | ||
| NVPTXRegisterInfo.h | ||
| NVPTXRegisterInfo.td | ||
| NVPTXReplaceImageHandles.cpp | ||
| NVPTXSection.h | ||
| NVPTXSubtarget.cpp | ||
| NVPTXSubtarget.h | ||
| NVPTXTargetMachine.cpp | ||
| NVPTXTargetMachine.h | ||
| NVPTXTargetObjectFile.h | ||
| NVPTXTargetTransformInfo.cpp | ||
| NVPTXTargetTransformInfo.h | ||
| NVPTXUtilities.cpp | ||
| NVPTXUtilities.h | ||
| NVPTXVector.td | ||
| NVVMReflect.cpp | ||