[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, 3 insertions, 3 deletions

diff --git a/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp
index a7bc8a84818..0af3d1521eb 100644
--- a/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp
@@ -2589,8 +2589,8 @@ void CodeViewDebug::endFunctionImpl(const MachineFunction *MF) {
 void CodeViewDebug::beginInstruction(const MachineInstr *MI) {
   DebugHandlerBase::beginInstruction(MI);
 
-  // Ignore DBG_VALUE locations and function prologue.
-  if (!Asm || !CurFn || MI->isDebugValue() ||
+  // Ignore DBG_VALUE and DBG_LABEL locations and function prologue.
+  if (!Asm || !CurFn || MI->isDebugInstr() ||
       MI->getFlag(MachineInstr::FrameSetup))
     return;
 
@@ -2599,7 +2599,7 @@ void CodeViewDebug::beginInstruction(const MachineInstr *MI) {
   DebugLoc DL = MI->getDebugLoc();
   if (!DL && MI->getParent() != PrevInstBB) {
     for (const auto &NextMI : *MI->getParent()) {
-      if (NextMI.isDebugValue())
+      if (NextMI.isDebugInstr())
         continue;
       DL = NextMI.getDebugLoc();
       if (DL)