[llvm-commits] CVS: llvm/lib/Target/ARM/ARMISelDAGToDAG.cpp ARMInstrInfo.td

[Rafael Espindola]

Changes in directory llvm/lib/Target/ARM:

ARMISelDAGToDAG.cpp updated: 1.9 -> 1.10
ARMInstrInfo.td updated: 1.3 -> 1.4
---
Log message:

Expand ret into "CopyToReg;BRIND"



---
Diffs of the changes:  (+4 -18)

 ARMISelDAGToDAG.cpp |   12 +++---------
 ARMInstrInfo.td     |   10 +---------
 2 files changed, 4 insertions(+), 18 deletions(-)


Index: llvm/lib/Target/ARM/ARMISelDAGToDAG.cpp
diff -u llvm/lib/Target/ARM/ARMISelDAGToDAG.cpp:1.9 
llvm/lib/Target/ARM/ARMISelDAGToDAG.cpp:1.10
--- llvm/lib/Target/ARM/ARMISelDAGToDAG.cpp:1.9 Fri May 26 18:10:12 2006
+++ llvm/lib/Target/ARM/ARMISelDAGToDAG.cpp     Tue May 30 12:33:19 2006
@@ -28,13 +28,6 @@
 #include <set>
 using namespace llvm;
 
-namespace ARMISD {
-  enum {
-    FIRST_NUMBER = ISD::BUILTIN_OP_END+ARM::INSTRUCTION_LIST_END,
-    RET_FLAG
-  };
-}
-
 namespace {
   class ARMTargetLowering : public TargetLowering {
   public:
@@ -63,11 +56,12 @@
   case 1:
     return SDOperand(); // ret void is legal
   case 3:
-    Copy = DAG.getCopyToReg(Op.getOperand(0), ARM::R0, Op.getOperand(2), 
SDOperand());
+    Copy = DAG.getCopyToReg(Op.getOperand(0), ARM::R0, Op.getOperand(1), 
SDOperand());
     break;
   }
+  SDOperand LR = DAG.getRegister(ARM::R14, MVT::i32);
 
-  return DAG.getNode(ARMISD::RET_FLAG, MVT::Other, Copy, Copy.getValue(1));
+  return DAG.getNode(ISD::BRIND, MVT::Other, Copy, LR);
 }
 
 static SDOperand LowerFORMAL_ARGUMENTS(SDOperand Op, SelectionDAG &DAG) {


Index: llvm/lib/Target/ARM/ARMInstrInfo.td
diff -u llvm/lib/Target/ARM/ARMInstrInfo.td:1.3 
llvm/lib/Target/ARM/ARMInstrInfo.td:1.4
--- llvm/lib/Target/ARM/ARMInstrInfo.td:1.3     Fri May 26 05:56:17 2006
+++ llvm/lib/Target/ARM/ARMInstrInfo.td Tue May 30 12:33:19 2006
@@ -30,10 +30,6 @@
 def callseq_start  : SDNode<"ISD::CALLSEQ_START", SDT_ARMCallSeq, 
[SDNPHasChain]>;
 def callseq_end    : SDNode<"ISD::CALLSEQ_END",   SDT_ARMCallSeq, 
[SDNPHasChain]>;
 
-def SDT_ARMRetFlag : SDTypeProfile<0, 0, []>;
-def retflag        : SDNode<"ARMISD::RET_FLAG", SDT_ARMRetFlag,
-                           [SDNPHasChain, SDNPOptInFlag]>;
-
 def ADJCALLSTACKUP : InstARM<(ops i32imm:$amt),
                             "!ADJCALLSTACKUP $amt",
                             [(callseq_end imm:$amt)]>;
@@ -42,11 +38,7 @@
                                "!ADJCALLSTACKDOWN $amt",
                                [(callseq_start imm:$amt)]>;
 
-//bx supports other registers as operands. So this looks like a
-//hack. Maybe a ret should be expanded to a "branch lr" and bx
-//declared as a regular instruction
-
-def BX: InstARM<(ops), "bx lr", [(retflag)]>;
+def bxr: InstARM<(ops IntRegs:$dst), "bx $dst", [(brind IntRegs:$dst)]>;
 
 def ldr   : InstARM<(ops IntRegs:$dst, IntRegs:$addr),
                      "ldr $dst, [$addr]",



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