search for: needsstackrealign

...pilogInserter.cpp (revision 52829) > +++ CodeGen/PrologEpilogInserter.cpp (working copy) > @@ -464,7 +464,8 @@ > // works. > if (!RegInfo->targetHandlesStackFrameRounding() && > (FFI->hasCalls() || FFI->hasVarSizedObjects() || > - RegInfo->needsStackRealignment(Fn))) { > + (RegInfo->needsStackRealignment(Fn) && > + Offset > std::abs(TFI.getOffsetOfLocalArea())))) { > // If we have reserved argument space for call sites in the > function > // immediately on entry to the current function, count it...

...alignment. Unfortunately > your patch doesn't make any difference. > > Thanks for thinking about this, > > Duncan. OK, the test is not quite right then. This doesn't happen on Darwin so I'm afraid you'll have to debug it. Perhaps testing for (RegInfo->needsStackRealignment(Fn) && FFI->getObjectIndexEnd()!=0) ? > On Friday 27 June 2008 19:51:00 Dale Johannesen wrote: >> On Jun 27, 2008, at 3:11 AMPDT, Duncan Sands wrote: >>> FAIL: test/CodeGen/X86/vec_shuffle-10.ll >>> Failed with exit(1) at line 3 >>> while...

Hi Dale, > OK, the test is not quite right then. This doesn't happen on Darwin > so I'm > afraid you'll have to debug it. Perhaps testing for > (RegInfo->needsStackRealignment(Fn) && > FFI->getObjectIndexEnd()!=0) > ? yes, that works - thanks! Since I have no idea what this is doing, is it ok if I leave it to you to commit it? Thanks again, Duncan. > > On Friday 27 June 2008 19:51:00 Dale Johannesen wrote: > >> On Jun 27,...

...========== --- CodeGen/PrologEpilogInserter.cpp (revision 52829) +++ CodeGen/PrologEpilogInserter.cpp (working copy) @@ -464,7 +464,8 @@ // works. if (!RegInfo->targetHandlesStackFrameRounding() && (FFI->hasCalls() || FFI->hasVarSizedObjects() || - RegInfo->needsStackRealignment(Fn))) { + (RegInfo->needsStackRealignment(Fn) && + Offset > std::abs(TFI.getOffsetOfLocalArea())))) { // If we have reserved argument space for call sites in the function // immediately on entry to the current function, count it as part of the //...

Running on x86-64 linux: FAIL: test/CodeGen/X86/vec_ins_extract.ll Failed with exit(1) at line 1 while running: llvm-as < test/CodeGen/X86/vec_ins_extract.ll | opt -scalarrepl -instcombine | llc -march=x86 -mcpu=yonah | not grep sub.*esp subl $16, %esp subl $16, %esp subl $16, %esp subl $16, %esp child process exited abnormally FAIL:

Hello, I found that is possible to introduce some changes in the stack layout; however, where I can find more information about how to use it (I am reading code). For example, how I can align the stack to the maximum size (what is the max size?), or how I can protect it? Can I set up the condiction using flags at compiler time or I need to change the code? -- Juan Carlos -------------- next

...ed, if we are a leaf // function, and use up to 128 bytes of stack space, don't have a frame // pointer, calls, or dynamic alloca then we do not need to adjust the // stack pointer (we fit in the Red Zone). if (Is64Bit && !Fn->hasFnAttr(Attribute::NoRedZone) && !needsStackRealignment(MF) && !MFI->hasVarSizedObjects() && // No dynamic alloca. !MFI->adjustsStack() && // No calls. !IsWin64) { // Win64 has no Red Zone uint64_t MinSize = X86FI->getCalleeSav...

...is disabled. bool X86FrameLowering::hasFP(const MachineFunction &MF) const { const MachineFrameInfo &MFI = MF.getFrameInfo(); - return (MF.getTarget().Options.DisableFramePointerElim(MF) || + return (MF.getTarget().Options.DisableFramePointerElim(MF) || SaveArgs || TRI->needsStackRealignment(MF) || MFI.hasVarSizedObjects() || MFI.isFrameAddressTaken() || MFI.hasOpaqueSPAdjustment() || @@ -850,6 +851,25 @@ MI->getOperand(3).setIsDead(); } +// FIXME: Get this from tablegen. +static ArrayRef<MCPhysReg> get64BitArgumentGPRs(CallingConv::ID CallConv,...