From 9c3badcebaf783daa00a347704f12f025e9d90b6 Mon Sep 17 00:00:00 2001 From: Jakob Stoklund Olesen Date: Fri, 29 Jul 2011 00:27:32 +0000 Subject: Add -verify-arm-pseudo-expand. This hidden llc option runs the machine code verifier after expanding ARM pseudo-instructions, but before if-conversion. The machine code verifier is much better at pointing out liveness errors that can trip up the register scavenger. llvm-svn: 136439 --- llvm/lib/Target/ARM/ARMExpandPseudoInsts.cpp | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'llvm/lib/Target/ARM/ARMExpandPseudoInsts.cpp') diff --git a/llvm/lib/Target/ARM/ARMExpandPseudoInsts.cpp b/llvm/lib/Target/ARM/ARMExpandPseudoInsts.cpp index d400cebc89b..a4fcfd51bfd 100644 --- a/llvm/lib/Target/ARM/ARMExpandPseudoInsts.cpp +++ b/llvm/lib/Target/ARM/ARMExpandPseudoInsts.cpp @@ -26,9 +26,14 @@ #include "llvm/CodeGen/MachineInstrBuilder.h" #include "llvm/Target/TargetFrameLowering.h" #include "llvm/Target/TargetRegisterInfo.h" +#include "llvm/Support/CommandLine.h" #include "llvm/Support/raw_ostream.h" // FIXME: for debug only. remove! using namespace llvm; +cl::opt +VerifyARMPseudo("verify-arm-pseudo-expand", cl::Hidden, + cl::desc("Verify machine code after expanding ARM pseudos")); + namespace { class ARMExpandPseudo : public MachineFunctionPass { public: @@ -1328,6 +1333,8 @@ bool ARMExpandPseudo::runOnMachineFunction(MachineFunction &MF) { for (MachineFunction::iterator MFI = MF.begin(), E = MF.end(); MFI != E; ++MFI) Modified |= ExpandMBB(*MFI); + if (VerifyARMPseudo) + MF.verify(this, "After expanding ARM pseudo instructions."); return Modified; } -- cgit v1.2.3