From bdf34bc12bfc39de02c19fa250e83edb5924a6cf Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Thu, 19 Jun 2008 01:16:17 +0000 Subject: Minor spiller tweak to unfavor reload into load/store instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52477 91177308-0d34-0410-b5e6-96231b3b80d8 --- include/llvm/CodeGen/LiveIntervalAnalysis.h | 8 ++++++-- include/llvm/CodeGen/MachineRegisterInfo.h | 7 +++++++ 2 files changed, 13 insertions(+), 2 deletions(-) (limited to 'include/llvm/CodeGen') diff --git a/include/llvm/CodeGen/LiveIntervalAnalysis.h b/include/llvm/CodeGen/LiveIntervalAnalysis.h index 473cc8e099..84c6d67919 100644 --- a/include/llvm/CodeGen/LiveIntervalAnalysis.h +++ b/include/llvm/CodeGen/LiveIntervalAnalysis.h @@ -121,8 +121,12 @@ namespace llvm { return getBaseIndex(index) + InstrSlots::STORE; } - static float getSpillWeight(bool isDef, bool isUse, unsigned loopDepth) { - return (isDef + isUse) * powf(10.0F, (float)loopDepth); + static float getSpillWeight(bool isDef, bool isUse, bool isMem, + unsigned loopDepth) { + float Weight = isDef; + if (isUse) + Weight += isMem ? 1.2f : 1.0f; + return Weight * powf(10.0F, (float)loopDepth); } typedef Reg2IntervalMap::iterator iterator; diff --git a/include/llvm/CodeGen/MachineRegisterInfo.h b/include/llvm/CodeGen/MachineRegisterInfo.h index b93794c1be..bfa6d1ccd0 100644 --- a/include/llvm/CodeGen/MachineRegisterInfo.h +++ b/include/llvm/CodeGen/MachineRegisterInfo.h @@ -135,6 +135,13 @@ public: assert(Reg < VRegInfo.size() && "Invalid vreg!"); return VRegInfo[Reg].first; } + + /// setRegClass - Set the register class of the specified virtual register. + void setRegClass(unsigned Reg, const TargetRegisterClass *RC) { + Reg -= TargetRegisterInfo::FirstVirtualRegister; + assert(Reg < VRegInfo.size() && "Invalid vreg!"); + VRegInfo[Reg].first = RC; + } /// createVirtualRegister - Create and return a new virtual register in the /// function with the specified register class. -- cgit v1.2.3-70-g09d2