[llvm-commits] CVS: llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp

[Reid Spencer]

Changes in directory llvm/lib/CodeGen/SelectionDAG:

SelectionDAGISel.cpp updated: 1.318 -> 1.319
---
Log message:

For PR950: http://llvm.org/PR950 :
First in a series of patches to convert SetCondInst into ICmpInst and 
FCmpInst using only two opcodes and having the instructions contain their
predicate value. Nothing uses these classes yet. More patches to follow.


---
Diffs of the changes:  (+56 -0)

 SelectionDAGISel.cpp |   56 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 56 insertions(+)


Index: llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
diff -u llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp:1.318 llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp:1.319
--- llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp:1.318	Wed Nov 15 11:51:15 2006
+++ llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp	Sun Nov 19 19:22:35 2006
@@ -541,6 +541,8 @@
   void visitShl(User &I) { visitShift(I, ISD::SHL); }
   void visitLShr(User &I) { visitShift(I, ISD::SRL); }
   void visitAShr(User &I) { visitShift(I, ISD::SRA); }
+  void visitICmp(User &I);
+  void visitFCmp(User &I);
   void visitSetCC(User &I, ISD::CondCode SignedOpc, ISD::CondCode UnsignedOpc,
                   ISD::CondCode FPOpc);
   void visitSetEQ(User &I) { visitSetCC(I, ISD::SETEQ, ISD::SETEQ, 
@@ -1442,6 +1444,60 @@
   setValue(&I, DAG.getNode(Opcode, Op1.getValueType(), Op1, Op2));
 }
 
+void SelectionDAGLowering::visitICmp(User &I) {
+  ICmpInst *IC = cast<ICmpInst>(&I);
+  SDOperand Op1 = getValue(IC->getOperand(0));
+  SDOperand Op2 = getValue(IC->getOperand(1));
+  ISD::CondCode Opcode;
+  switch (IC->getPredicate()) {
+    case ICmpInst::ICMP_EQ  : Opcode = ISD::SETEQ; break;
+    case ICmpInst::ICMP_NE  : Opcode = ISD::SETNE; break;
+    case ICmpInst::ICMP_UGT : Opcode = ISD::SETUGT; break;
+    case ICmpInst::ICMP_UGE : Opcode = ISD::SETUGE; break;
+    case ICmpInst::ICMP_ULT : Opcode = ISD::SETULT; break;
+    case ICmpInst::ICMP_ULE : Opcode = ISD::SETULE; break;
+    case ICmpInst::ICMP_SGT : Opcode = ISD::SETGT; break;
+    case ICmpInst::ICMP_SGE : Opcode = ISD::SETGE; break;
+    case ICmpInst::ICMP_SLT : Opcode = ISD::SETLT; break;
+    case ICmpInst::ICMP_SLE : Opcode = ISD::SETLE; break;
+    default:
+      assert(!"Invalid ICmp predicate value");
+      Opcode = ISD::SETEQ;
+      break;
+  }
+  setValue(&I, DAG.getSetCC(MVT::i1, Op1, Op2, Opcode));
+}
+
+void SelectionDAGLowering::visitFCmp(User &I) {
+  FCmpInst *FC = cast<FCmpInst>(&I);
+  SDOperand Op1 = getValue(FC->getOperand(0));
+  SDOperand Op2 = getValue(FC->getOperand(1));
+  ISD::CondCode Opcode;
+  switch (FC->getPredicate()) {
+    case FCmpInst::FCMP_FALSE : Opcode = ISD::SETFALSE;
+    case FCmpInst::FCMP_OEQ   : Opcode = ISD::SETOEQ;
+    case FCmpInst::FCMP_OGT   : Opcode = ISD::SETOGT;
+    case FCmpInst::FCMP_OGE   : Opcode = ISD::SETOGE;
+    case FCmpInst::FCMP_OLT   : Opcode = ISD::SETOLT;
+    case FCmpInst::FCMP_OLE   : Opcode = ISD::SETOLE;
+    case FCmpInst::FCMP_ONE   : Opcode = ISD::SETONE;
+    case FCmpInst::FCMP_ORD   : Opcode = ISD::SETO;
+    case FCmpInst::FCMP_UNO   : Opcode = ISD::SETUO;
+    case FCmpInst::FCMP_UEQ   : Opcode = ISD::SETUEQ;
+    case FCmpInst::FCMP_UGT   : Opcode = ISD::SETUGT;
+    case FCmpInst::FCMP_UGE   : Opcode = ISD::SETUGE;
+    case FCmpInst::FCMP_ULT   : Opcode = ISD::SETULT;
+    case FCmpInst::FCMP_ULE   : Opcode = ISD::SETULE;
+    case FCmpInst::FCMP_UNE   : Opcode = ISD::SETUNE;
+    case FCmpInst::FCMP_TRUE  : Opcode = ISD::SETTRUE;
+    default:
+      assert(!"Invalid FCmp predicate value");
+      Opcode = ISD::SETFALSE;
+      break;
+  }
+  setValue(&I, DAG.getSetCC(MVT::i1, Op1, Op2, Opcode));
+}
+
 void SelectionDAGLowering::visitSetCC(User &I,ISD::CondCode SignedOpcode,
                                       ISD::CondCode UnsignedOpcode,
                                       ISD::CondCode FPOpcode) {