From 8cb97523c6f44bcf24f35a86b4de56d077567d1e Mon Sep 17 00:00:00 2001 From: Jakob Stoklund Olesen Date: Wed, 28 Mar 2012 20:11:44 +0000 Subject: Revert r153516: "Invalidate liveness in Thumb2ITBlockPass." Revert r153519: "ARMLoadStoreOptimizer invalidates register liveness." These patches caused miscompilations in povray by turning off branch folding's updating of live-in lists. It turns out the the late scheduler depends on the live-in lists, even if it doesn't need correct kill flags. llvm-svn: 153593 --- llvm/lib/Target/ARM/Thumb2ITBlockPass.cpp | 4 ---- 1 file changed, 4 deletions(-) (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 e2166ffc322..ecb4c2f0e5d 100644 --- a/llvm/lib/Target/ARM/Thumb2ITBlockPass.cpp +++ b/llvm/lib/Target/ARM/Thumb2ITBlockPass.cpp @@ -15,7 +15,6 @@ #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; @@ -259,9 +258,6 @@ 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