[DebugInfo] Examine all uses of isDebugValue() for debug instructions.

Because we create a new kind of debug instruction, DBG_LABEL, we need to
check all passes which use isDebugValue() to check MachineInstr is debug
instruction or not. When expelling debug instructions, we should expel
both DBG_VALUE and DBG_LABEL. So, I create a new function,
isDebugInstr(), in MachineInstr to check whether the MachineInstr is
debug instruction or not.

This patch has no new test case. I have run regression test and there is
no difference in regression test.

Differential Revision: https://reviews.llvm.org/D45342

Patch by Hsiangkai Wang.

llvm-svn: 331844

1 files changed, 2 insertions, 2 deletions

diff --git a/llvm/lib/CodeGen/LiveRangeShrink.cpp b/llvm/lib/CodeGen/LiveRangeShrink.cpp
index 02e1f3b01ad..1aa3bbd90a9 100644
--- a/llvm/lib/CodeGen/LiveRangeShrink.cpp
+++ b/llvm/lib/CodeGen/LiveRangeShrink.cpp
@@ -130,7 +130,7 @@ bool LiveRangeShrink::runOnMachineFunction(MachineFunction &MF) {
     for (MachineBasicBlock::iterator Next = MBB.begin(); Next != MBB.end();) {
       MachineInstr &MI = *Next;
       ++Next;
-      if (MI.isPHI() || MI.isDebugValue())
+      if (MI.isPHI() || MI.isDebugInstr())
         continue;
       if (MI.mayStore())
         SawStore = true;
@@ -218,7 +218,7 @@ bool LiveRangeShrink::runOnMachineFunction(MachineFunction &MF) {
       if (DefMO && Insert && NumEligibleUse > 1 && Barrier <= IOM[Insert]) {
         MachineBasicBlock::iterator I = std::next(Insert->getIterator());
         // Skip all the PHI and debug instructions.
-        while (I != MBB.end() && (I->isPHI() || I->isDebugValue()))
+        while (I != MBB.end() && (I->isPHI() || I->isDebugInstr()))
           I = std::next(I);
         if (I == MI.getIterator())
           continue;