remove some dead code. t2addrmode_imm8s4 is never used in a

pattern, so there is no need to define a matching function.

llvm-svn: 113122

2 files changed, 1 insertions, 32 deletions

diff --git a/llvm/lib/Target/ARM/ARMISelDAGToDAG.cpp b/llvm/lib/Target/ARM/ARMISelDAGToDAG.cpp
index 51a30c158dd..456311ff25e 100644
--- a/llvm/lib/Target/ARM/ARMISelDAGToDAG.cpp
+++ b/llvm/lib/Target/ARM/ARMISelDAGToDAG.cpp
@@ -113,8 +113,6 @@ public:
                             SDValue &OffImm);
   bool SelectT2AddrModeImm8Offset(SDNode *Op, SDValue N,
                                  SDValue &OffImm);
-  bool SelectT2AddrModeImm8s4(SDNode *Op, SDValue N, SDValue &Base,
-                              SDValue &OffImm);
   bool SelectT2AddrModeSoReg(SDNode *Op, SDValue N, SDValue &Base,
                              SDValue &OffReg, SDValue &ShImm);
 
@@ -797,34 +795,6 @@ bool ARMDAGToDAGISel::SelectT2AddrModeImm8Offset(SDNode *Op, SDValue N,
   return false;
 }
 
-bool ARMDAGToDAGISel::SelectT2AddrModeImm8s4(SDNode *Op, SDValue N,
-                                             SDValue &Base, SDValue &OffImm) {
-  if (N.getOpcode() == ISD::ADD) {
-    if (ConstantSDNode *RHS = dyn_cast<ConstantSDNode>(N.getOperand(1))) {
-      int RHSC = (int)RHS->getZExtValue();
-      // 8 bits.
-      if (((RHSC & 0x3) == 0) &&
-          ((RHSC >= 0 && RHSC < 0x400) || (RHSC < 0 && RHSC > -0x400))) {
-        Base   = N.getOperand(0);
-        OffImm = CurDAG->getTargetConstant(RHSC, MVT::i32);
-        return true;
-      }
-    }
-  } else if (N.getOpcode() == ISD::SUB) {
-    if (ConstantSDNode *RHS = dyn_cast<ConstantSDNode>(N.getOperand(1))) {
-      int RHSC = (int)RHS->getZExtValue();
-      // 8 bits.
-      if (((RHSC & 0x3) == 0) && (RHSC >= 0 && RHSC < 0x400)) {
-        Base   = N.getOperand(0);
-        OffImm = CurDAG->getTargetConstant(-RHSC, MVT::i32);
-        return true;
-      }
-    }
-  }
-
-  return false;
-}
-
 bool ARMDAGToDAGISel::SelectT2AddrModeSoReg(SDNode *Op, SDValue N,
                                             SDValue &Base,
                                             SDValue &OffReg, SDValue &ShImm) {
diff --git a/llvm/lib/Target/ARM/ARMInstrThumb2.td b/llvm/lib/Target/ARM/ARMInstrThumb2.td
index 6ba0a44be47..096a8c7350e 100644
--- a/llvm/lib/Target/ARM/ARMInstrThumb2.td
+++ b/llvm/lib/Target/ARM/ARMInstrThumb2.td
@@ -145,8 +145,7 @@ def t2am_imm8_offset : Operand<i32>,
 }
 
 // t2addrmode_imm8s4  := reg +/- (imm8 << 2)
-def t2addrmode_imm8s4 : Operand<i32>,
-                        ComplexPattern<i32, 2, "SelectT2AddrModeImm8s4", []> {
+def t2addrmode_imm8s4 : Operand<i32> {
   let PrintMethod = "printT2AddrModeImm8s4Operand";
   let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm);
 }