From 14459cdc4917b00d1f230963abfb448eabf85605 Mon Sep 17 00:00:00 2001 From: Jakob Stoklund Olesen Date: Tue, 27 Mar 2012 17:06:06 +0000 Subject: Invalidate liveness in Thumb2ITBlockPass. llvm-svn: 153516 --- llvm/lib/Target/ARM/Thumb2ITBlockPass.cpp | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'llvm/lib/Target/ARM/Thumb2ITBlockPass.cpp') diff --git a/llvm/lib/Target/ARM/Thumb2ITBlockPass.cpp b/llvm/lib/Target/ARM/Thumb2ITBlockPass.cpp index ecb4c2f0e5d..e2166ffc322 100644 --- a/llvm/lib/Target/ARM/Thumb2ITBlockPass.cpp +++ b/llvm/lib/Target/ARM/Thumb2ITBlockPass.cpp @@ -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; -- cgit v1.2.3