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[WebAssemly] Invalidate liveness in CFG stackifier 

WebAssemblyCFGStackify does not track liveness for EXPR_STACK, causing
verifier failure if liveness has not already been invalidated.

llvm-svn: 257620
This commit is contained in:
Derek Schuff 2016-01-13 17:10:28 +00:00
parent 746cd84e3c
commit 9c3bf3187a
1 changed files with 3 additions and 0 deletions
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3
llvm/lib/Target/WebAssembly/WebAssemblyCFGStackify.cpp
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@ -34,6 +34,7 @@
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineLoopInfo.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
@ -475,7 +476,9 @@ bool WebAssemblyCFGStackify::runOnMachineFunction(MachineFunction &MF) {
const auto &MLI = getAnalysis<MachineLoopInfo>();
auto &MDT = getAnalysis<MachineDominatorTree>();
// Liveness is not tracked for EXPR_STACK physreg.
const auto &TII = *MF.getSubtarget<WebAssemblySubtarget>().getInstrInfo();
MF.getRegInfo().invalidateLiveness();
// RPO sorting needs all loops to be single-entry.
EliminateMultipleEntryLoops(MF, MLI);