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Remove a variable that was only used in asserts and had a duplicate copy in something we did use anyhow.

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llvm-svn: 307457
This commit is contained in:
Eric Christopher 2017-07-08 01:03:29 +00:00
parent fdff2a0519
commit 8fe591d225
1 changed files with 2 additions and 3 deletions
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5
lib/Target/X86/X86FrameLowering.cpp
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@ -972,7 +972,6 @@ void X86FrameLowering::emitPrologue(MachineFunction &MF,
X86FI->setCalleeSavedFrameSize(
X86FI->getCalleeSavedFrameSize() - TailCallReturnAddrDelta);
bool UseRedZone = false;
bool UseStackProbe = !STI.getTargetLowering()->getStackProbeSymbolName(MF).empty();
// The default stack probe size is 4096 if the function has no stackprobesize
@ -1011,7 +1010,6 @@ void X86FrameLowering::emitPrologue(MachineFunction &MF,
X86FI->setUsesRedZone(MinSize > 0 || StackSize > 0);
StackSize = std::max(MinSize, StackSize > 128 ? StackSize - 128 : 0);
MFI.setStackSize(StackSize);
UseRedZone = true;
}
// Insert stack pointer adjustment for later moving of return addr. Only
@ -1189,7 +1187,8 @@ void X86FrameLowering::emitPrologue(MachineFunction &MF,
if (IsWin64Prologue && !IsFunclet && TRI->needsStackRealignment(MF))
AlignedNumBytes = alignTo(AlignedNumBytes, MaxAlign);
if (AlignedNumBytes >= StackProbeSize && UseStackProbe) {
assert(!UseRedZone && "The Red Zone is not accounted for in stack probes");
assert(!X86FI->getUsesRedZone() &&
"The Red Zone is not accounted for in stack probes");
// Check whether EAX is livein for this block.
bool isEAXAlive = isEAXLiveIn(MBB);