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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-03-27 17:06:06 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-03-27 17:06:06 +0000 |
| commit | 33fa614b16db175d0687eb34aea3a080d0d237c2 (patch) | |
| tree | 63800fa9cf4bd9900b0c36040112faed97ad7860 /lib/Target | |
| parent | 77d9521945fa46e03af9451b526fe0e588f44a04 (diff) | |
| download | llvm-33fa614b16db175d0687eb34aea3a080d0d237c2.tar.gz llvm-33fa614b16db175d0687eb34aea3a080d0d237c2.tar.bz2 llvm-33fa614b16db175d0687eb34aea3a080d0d237c2.tar.xz | |
Invalidate liveness in Thumb2ITBlockPass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153516 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target')
| -rw-r--r-- | lib/Target/ARM/Thumb2ITBlockPass.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Target/ARM/Thumb2ITBlockPass.cpp b/lib/Target/ARM/Thumb2ITBlockPass.cpp index ecb4c2f0e5..e2166ffc32 100644 --- a/lib/Target/ARM/Thumb2ITBlockPass.cpp +++ b/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; |