search for: loopdepth

...// replace register with representative register unsigned reg = rep(mop.getReg()); mii->SetMachineOperandReg(i, reg); LiveInterval &RegInt = getInterval(reg); RegInt.weight += (mop.isUse() + mop.isDef()) * pow(10.0F, (int)loopDepth); -- Tzu-Chien Chiu, 3D Graphics Hardware Architect <URL:http://www.csie.nctu.edu.tw/~jwchiu>

Hey, guys, could someone tell me some high level things about the version of linear scan that you use? 1) The heuristics for spilling seems to be: (mop.isUse() + mop.isDef()) * pow(10.0F, (int)loopDepth besides not spilling defs that are immediatly followed by uses, do you do any other thing, such as, taking into consideration the size of the interval when spilling? 2) How do you avoid conflicts with machine registers already in the target code, such as the ones used to pass parameters in P...

...ter with representative register > unsigned reg = rep(mop.getReg()); > mii->SetMachineOperandReg(i, reg); > > LiveInterval &RegInt = getInterval(reg); > RegInt.weight += > (mop.isUse() + mop.isDef()) * pow(10.0F, (int)loopDepth); > > -Chris -- http://nondot.org/sabre/ http://llvm.org/

...th representative register > unsigned reg = rep(mop.getReg()); > mii->SetMachineOperandReg(i, reg); > > LiveInterval &RegInt = getInterval(reg); > RegInt.weight += > (mop.isUse() + mop.isDef()) * pow(10.0F, (int)loopDepth); > After joining intervals some moves are unecessary. If for example this instruction was in the code: mov %reg1024, %reg1045 and intervals for reg1024 and reg1045 were joined, only one register needs to be present in the pre register-allocation machine code. So all references to reg1024 an...

Hi all, Is there an analysis in LLVM that will give an estimate of the execution frequency of basic blocks without using profiling data from an execution of the code? Thanks! -bw