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Invalidate liveness in Thumb2ITBlockPass.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153516 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2012-03-27 17:06:06 +00:00
parent 77d9521945
commit 33fa614b16
1 changed files with 4 additions and 0 deletions
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4
lib/Target/ARM/Thumb2ITBlockPass.cpp
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@ -15,6 +15,7 @@
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineInstrBundle.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/ADT/SmallSet.h"
#include "llvm/ADT/Statistic.h"
using namespace llvm;
@ -258,6 +259,9 @@ bool Thumb2ITBlockPass::runOnMachineFunction(MachineFunction &Fn) {
if (!AFI->isThumbFunction())
return false;
// IT block insertion invalidates accurate register liveness.
Fn.getRegInfo().invalidateLiveness();
bool Modified = false;
for (MachineFunction::iterator MFI = Fn.begin(), E = Fn.end(); MFI != E; ) {
MachineBasicBlock &MBB = *MFI;