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author | Sergei Larin <slarin@codeaurora.org> | 2012-09-04 14:49:56 +0000 |
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committer | Sergei Larin <slarin@codeaurora.org> | 2012-09-04 14:49:56 +0000 |
commit | 3e59040810d0e6e04269ac8f781fa44df6088458 (patch) | |
tree | 20a1bc053a71a390be8cdd95b05c709d7565db87 /lib/Target/Hexagon/HexagonRegisterInfo.cpp | |
parent | 67514e90669ec9ffd954c1fcb6f8979bafcabe8a (diff) | |
download | external_llvm-3e59040810d0e6e04269ac8f781fa44df6088458.zip external_llvm-3e59040810d0e6e04269ac8f781fa44df6088458.tar.gz external_llvm-3e59040810d0e6e04269ac8f781fa44df6088458.tar.bz2 |
Porting Hexagon MI Scheduler to the new API.
Change current Hexagon MI scheduler to use new converging
scheduler. Integrates DFA resource model into it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163137 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/Hexagon/HexagonRegisterInfo.cpp')
-rw-r--r-- | lib/Target/Hexagon/HexagonRegisterInfo.cpp | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/lib/Target/Hexagon/HexagonRegisterInfo.cpp b/lib/Target/Hexagon/HexagonRegisterInfo.cpp index 2c23674..3742486 100644 --- a/lib/Target/Hexagon/HexagonRegisterInfo.cpp +++ b/lib/Target/Hexagon/HexagonRegisterInfo.cpp @@ -310,6 +310,58 @@ void HexagonRegisterInfo::getInitialFrameState(std::vector<MachineMove> Moves.push_back(MachineMove(0, Dst, Src)); } +// Get the weight in units of pressure for this register class. +const RegClassWeight & +HexagonRegisterInfo::getRegClassWeight(const TargetRegisterClass *RC) const { + // Each TargetRegisterClass has a per register weight, and weight + // limit which must be less than the limits of its pressure sets. + static const RegClassWeight RCWeightTable[] = { + {1, 32}, // IntRegs + {1, 8}, // CRRegs + {1, 4}, // PredRegs + {2, 16}, // DoubleRegs + {0, 0} }; + return RCWeightTable[RC->getID()]; +} + +/// Get the number of dimensions of register pressure. +unsigned HexagonRegisterInfo::getNumRegPressureSets() const { + return 4; +} + +/// Get the name of this register unit pressure set. +const char *HexagonRegisterInfo::getRegPressureSetName(unsigned Idx) const { + static const char *const RegPressureSetName[] = { + "IntRegsRegSet", + "CRRegsRegSet", + "PredRegsRegSet", + "DoubleRegsRegSet" + }; + assert((Idx < 4) && "Index out of bounds"); + return RegPressureSetName[Idx]; +} + +/// Get the register unit pressure limit for this dimension. +/// This limit must be adjusted dynamically for reserved registers. +unsigned HexagonRegisterInfo::getRegPressureSetLimit(unsigned Idx) const { + static const int RegPressureLimit [] = { 16, 4, 2, 8 }; + assert((Idx < 4) && "Index out of bounds"); + return RegPressureLimit[Idx]; +} + +const int* +HexagonRegisterInfo::getRegClassPressureSets(const TargetRegisterClass *RC) + const { + static const int RCSetsTable[] = { + 0, -1, // IntRegs + 1, -1, // CRRegs + 2, -1, // PredRegs + 0, -1, // DoubleRegs + -1 }; + static const unsigned RCSetStartTable[] = { 0, 2, 4, 6, 0 }; + unsigned SetListStart = RCSetStartTable[RC->getID()]; + return &RCSetsTable[SetListStart]; +} unsigned HexagonRegisterInfo::getEHExceptionRegister() const { llvm_unreachable("What is the exception register"); } |