[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/BreakFalseDeps.cpp b/llvm/lib/CodeGen/BreakFalseDeps.cpp
index 1e30a08b9dc..2e6d7275c7e 100644
--- a/llvm/lib/CodeGen/BreakFalseDeps.cpp
+++ b/llvm/lib/CodeGen/BreakFalseDeps.cpp
@@ -176,7 +176,7 @@ bool BreakFalseDeps::shouldBreakDependence(MachineInstr *MI, unsigned OpIdx,
 }
 
 void BreakFalseDeps::processDefs(MachineInstr *MI) {
-  assert(!MI->isDebugValue() && "Won't process debug values");
+  assert(!MI->isDebugInstr() && "Won't process debug values");
 
   // Break dependence on undef uses. Do this before updating LiveRegs below.
   unsigned OpNum;
@@ -244,7 +244,7 @@ void BreakFalseDeps::processBasicBlock(MachineBasicBlock *MBB) {
   // and by then we'll have better information, so we can avoid doing the work
   // to try and break dependencies now.
   for (MachineInstr &MI : *MBB) {
-    if (!MI.isDebugValue())
+    if (!MI.isDebugInstr())
       processDefs(&MI);
   }
   processUndefReads(MBB);