[MachineInstr] Add isCandidateForCallSiteEntry predicate

Add the isCandidateForCallSiteEntry predicate to MachineInstr to
determine whether a DWARF call site entry should be created for an
instruction.

For now, it's enough to have any call instruction that doesn't belong to
a blacklisted set of opcodes. For these opcodes, a call site entry isn't
meaningful.

Differential Revision: https://reviews.llvm.org/D74159

1 files changed, 14 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/MachineInstr.cpp b/llvm/lib/CodeGen/MachineInstr.cpp
index 08d786f..7d4a474 100644
--- a/llvm/lib/CodeGen/MachineInstr.cpp
+++ b/llvm/lib/CodeGen/MachineInstr.cpp
@@ -696,6 +696,20 @@ void MachineInstr::eraseFromBundle() {
   getParent()->erase_instr(this);
 }
 
+bool MachineInstr::isCandidateForCallSiteEntry() const {
+  if (!isCall(MachineInstr::IgnoreBundle))
+    return false;
+  switch (getOpcode()) {
+  case TargetOpcode::PATCHABLE_EVENT_CALL:
+  case TargetOpcode::PATCHABLE_TYPED_EVENT_CALL:
+  case TargetOpcode::PATCHPOINT:
+  case TargetOpcode::STACKMAP:
+  case TargetOpcode::STATEPOINT:
+    return false;
+  }
+  return true;
+}
+
 unsigned MachineInstr::getNumExplicitOperands() const {
   unsigned NumOperands = MCID->getNumOperands();
   if (!MCID->isVariadic())