search for: estimatersstacksizelimit

Hi Alok, Echoing Anton's statements, please provide a testcase! :) Apart from that, looking at your patch and description I actually think that it is estimateRSStackSizeLimit that is wrong. It is performing a check for a Thumb2 addressing mode whether the target has a FP register. That's the main check - for some reason it is appending another check AFI->hasStackFrame() which seems wrong. The function should assume the function has a stack frame, because its ent...

Hello Alok, > I fixed this by performing the CanEliminateFrame and > RegInfo->cannotEliminateFrame checks before the call to > estimateRSSStackSizeLimit, since these values are available before BigStack > is initialized. Does that sound reasonable? I’ve attached a patch with my > change. Will you please provide a testcase which reproduces the problem? Thanks! -- With best

Hello LLVMDev, I've encountered what looks like a bug in LLVM 2.9, it doesn't appear to be fixed in 3.0 either. The problem occurs in function ARMFrameLowering.cpp:processFunctionBeforeCalleeSavedScan. There's a circular dependency in setting the variable BigStack and AFI->setHashStackFrame(true). The expression which initializes BigStack calls estimateRSSStackSizeLimit which in