From da68d30d24f3f25444793c6d8c3c5a614e523eaa Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Tue, 15 Jan 2008 21:58:22 +0000
Subject: [PATCH] no need to expand ISD::TRAP to X86ISD::TRAP, just match
 ISD::TRAP.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46015 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/X86/X86ISelLowering.cpp | 8 +-------
 lib/Target/X86/X86ISelLowering.h   | 6 +-----
 lib/Target/X86/X86InstrInfo.td     | 9 ++++-----
 3 files changed, 6 insertions(+), 17 deletions(-)

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 0587dfa664c..38ced90e658 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -294,7 +294,7 @@ X86TargetLowering::X86TargetLowering(TargetMachine &TM)
   
   setOperationAction(ISD::TRAMPOLINE, MVT::Other, Custom);
 
-  setOperationAction(ISD::TRAP, MVT::Other, Custom);
+  setOperationAction(ISD::TRAP, MVT::Other, Legal);
 
   // VASTART needs to be custom lowered to use the VarArgsFrameIndex
   setOperationAction(ISD::VASTART           , MVT::Other, Custom);
@@ -4950,10 +4950,6 @@ SDOperand X86TargetLowering::LowerFLT_ROUNDS(SDOperand Op, SelectionDAG &DAG) {
                       ISD::TRUNCATE : ISD::ZERO_EXTEND), VT, RetVal);
 }
 
-SDOperand X86TargetLowering::LowerTRAP(SDOperand Op, SelectionDAG &DAG) {
-  return DAG.getNode(X86ISD::TRAP, MVT::Other, Op.getOperand(0));
-}
-
 SDOperand X86TargetLowering::LowerCTLZ(SDOperand Op, SelectionDAG &DAG) {
   MVT::ValueType VT = Op.getValueType();
   MVT::ValueType OpVT = VT;
@@ -5058,7 +5054,6 @@ SDOperand X86TargetLowering::LowerOperation(SDOperand Op, SelectionDAG &DAG) {
   case ISD::FLT_ROUNDS:         return LowerFLT_ROUNDS(Op, DAG);
   case ISD::CTLZ:               return LowerCTLZ(Op, DAG);
   case ISD::CTTZ:               return LowerCTTZ(Op, DAG);
-  case ISD::TRAP:               return LowerTRAP(Op, DAG);
       
   // FIXME: REMOVE THIS WHEN LegalizeDAGTypes lands.
   case ISD::READCYCLECOUNTER:
@@ -5098,7 +5093,6 @@ const char *X86TargetLowering::getTargetNodeName(unsigned Opcode) const {
   case X86ISD::CALL:               return "X86ISD::CALL";
   case X86ISD::TAILCALL:           return "X86ISD::TAILCALL";
   case X86ISD::RDTSC_DAG:          return "X86ISD::RDTSC_DAG";
-  case X86ISD::TRAP:               return "X86ISD::TRAP";
   case X86ISD::CMP:                return "X86ISD::CMP";
   case X86ISD::COMI:               return "X86ISD::COMI";
   case X86ISD::UCOMI:              return "X86ISD::UCOMI";
diff --git a/lib/Target/X86/X86ISelLowering.h b/lib/Target/X86/X86ISelLowering.h
index 959e6102151..64324f3dc59 100644
--- a/lib/Target/X86/X86ISelLowering.h
+++ b/lib/Target/X86/X86ISelLowering.h
@@ -197,10 +197,7 @@ namespace llvm {
       TC_RETURN,
 
       // Store FP control world into i16 memory
-      FNSTCW16m,
-
-      // Trapping instruction
-      TRAP
+      FNSTCW16m
     };
   }
 
@@ -487,7 +484,6 @@ namespace llvm {
     SDOperand LowerEH_RETURN(SDOperand Op, SelectionDAG &DAG);
     SDOperand LowerTRAMPOLINE(SDOperand Op, SelectionDAG &DAG);
     SDOperand LowerFLT_ROUNDS(SDOperand Op, SelectionDAG &DAG);
-    SDOperand LowerTRAP(SDOperand Op, SelectionDAG &DAG);
     SDOperand LowerCTLZ(SDOperand Op, SelectionDAG &DAG);
     SDOperand LowerCTTZ(SDOperand Op, SelectionDAG &DAG);
     SDNode *ExpandFP_TO_SINT(SDNode *N, SelectionDAG &DAG);
diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td
index dfacd109e0c..037fc2f16e1 100644
--- a/lib/Target/X86/X86InstrInfo.td
+++ b/lib/Target/X86/X86InstrInfo.td
@@ -57,8 +57,6 @@ def SDT_X86EHRET : SDTypeProfile<0, 1, [SDTCisInt<0>]>;
 
 def SDT_X86TCRET : SDTypeProfile<0, 2, [SDTCisPtrTy<0>, SDTCisVT<1, i32>]>;
 
-def SDT_X86TRAP  : SDTypeProfile<0, 0, []>;
-
 def X86bsf     : SDNode<"X86ISD::BSF",      SDTIntUnaryOp>;
 def X86bsr     : SDNode<"X86ISD::BSR",      SDTIntUnaryOp>;
 def X86shld    : SDNode<"X86ISD::SHLD",     SDTIntShiftDOp>;
@@ -109,8 +107,9 @@ def X86ehret : SDNode<"X86ISD::EH_RETURN", SDT_X86EHRET,
 def X86tcret : SDNode<"X86ISD::TC_RETURN", SDT_X86TCRET, 
                         [SDNPHasChain,  SDNPOptInFlag]>;
 
-def X86trap  : SDNode<"X86ISD::TRAP", SDT_X86TRAP,
-                        [SDNPHasChain, SDNPOutFlag, SDNPSideEffect]>;
+def SDT_TRAP  : SDTypeProfile<0, 0, []>;
+def trap  : SDNode<"ISD::TRAP", SDT_TRAP,
+                   [SDNPHasChain, SDNPOutFlag, SDNPSideEffect]>;
 
 //===----------------------------------------------------------------------===//
 // X86 Operand Definitions.
@@ -490,7 +489,7 @@ def RDTSC : I<0x31, RawFrm, (outs), (ins), "rdtsc", [(X86rdtsc)]>,
             TB;
 
 let isBarrier = 1, hasCtrlDep = 1 in {
-def TRAP    : I<0x0B, RawFrm, (outs), (ins), "ud2", [(X86trap)]>, TB;
+def TRAP    : I<0x0B, RawFrm, (outs), (ins), "ud2", [(trap)]>, TB;
 }
 
 //===----------------------------------------------------------------------===//