[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, 1 insertions, 1 deletions

diff --git a/llvm/lib/Target/X86/X86FrameLowering.cpp b/llvm/lib/Target/X86/X86FrameLowering.cpp
index 42f9676fbe9..18f62e06afa 100644
--- a/llvm/lib/Target/X86/X86FrameLowering.cpp
+++ b/llvm/lib/Target/X86/X86FrameLowering.cpp
@@ -3025,7 +3025,7 @@ void X86FrameLowering::orderFrameObjects(
   // Count the number of uses for each object.
   for (auto &MBB : MF) {
     for (auto &MI : MBB) {
-      if (MI.isDebugValue())
+      if (MI.isDebugInstr())
         continue;
       for (const MachineOperand &MO : MI.operands()) {
         // Check to see if it's a local stack symbol.