Split ISD::LABEL into ISD::DBG_LABEL and ISD::EH_LABEL, eliminating

the need for a flavor operand, and add a new SDNode subclass,
LabelSDNode, for use with them to eliminate the need for a label id
operand.

Change instruction selection to let these label nodes through
unmodified instead of creating copies of them. Teach the MachineInstr
emitter how to emit a MachineInstr directly from an ISD label node.

This avoids the need for allocating SDNodes for the label id and
flavor value, as well as SDNodes for each of the post-isel label,
label id, and label flavor.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52943 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 3 insertions, 2 deletions

diff --git a/lib/Target/PowerPC/PPCInstrInfo.cpp b/lib/Target/PowerPC/PPCInstrInfo.cpp
index d7adea3c77..378fa4bf4d 100644
--- a/lib/Target/PowerPC/PPCInstrInfo.cpp
+++ b/lib/Target/PowerPC/PPCInstrInfo.cpp
@@ -754,9 +754,10 @@ unsigned PPCInstrInfo::GetInstSizeInBytes(const MachineInstr *MI) const {
     const char *AsmStr = MI->getOperand(0).getSymbolName();
     return MF->getTarget().getTargetAsmInfo()->getInlineAsmLength(AsmStr);
   }
-  case PPC::LABEL: {
+  case PPC::DBG_LABEL:
+  case PPC::EH_LABEL:
+  case PPC::GC_LABEL:
     return 0;
-  }
   default:
     return 4; // PowerPC instructions are all 4 bytes
   }