[llvm-commits] [llvm] r55482 - /llvm/trunk/lib/CodeGen/SelectionDAG/FastISel.cpp

[Owen Anderson]

Author: resistor
Date: Thu Aug 28 13:26:01 2008
New Revision: 55482

URL: http://llvm.org/viewvc/llvm-project?rev=55482&view=rev
Log:
Hook up support for fast-isel of trunc instructions, using the newly working support for EXTRACT_SUBREG.

Modified:
    llvm/trunk/lib/CodeGen/SelectionDAG/FastISel.cpp

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/FastISel.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/FastISel.cpp?rev=55482&r1=55481&r2=55482&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/FastISel.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/FastISel.cpp Thu Aug 28 13:26:01 2008
@@ -366,6 +366,9 @@
     case Instruction::SExt:
       if (!SelectCast(I, ISD::SIGN_EXTEND, ValueMap)) return I;
       break;
+    case Instruction::Trunc:
+      if (!SelectCast(I, ISD::TRUNCATE, ValueMap)) return I;
+      break;
     case Instruction::SIToFP:
       if (!SelectCast(I, ISD::SINT_TO_FP, ValueMap)) return I;
       break;
@@ -594,6 +597,6 @@
   unsigned ResultReg = createResultReg(SRC);
   const TargetInstrDesc &II = TII.get(TargetInstrInfo::EXTRACT_SUBREG);
   
-  BuildMI(MBB, II, ResultReg).addReg(Op0);
+  BuildMI(MBB, II, ResultReg).addReg(Op0).addImm(Idx);
   return ResultReg;
 }