Revert revisions r234755, r234759, r234760

[oota-llvm.git] / lib / Target / R600 / AMDGPUISelLowering.cpp

diff --git a/lib/Target/R600/AMDGPUISelLowering.cpp b/lib/Target/R600/AMDGPUISelLowering.cpp
index 41ab6c29b1e83a7dda694d8b5c7854617308304f..7c5235d15075af2f7364c2191c90ffbf79542dd4 100644 (file)
--- a/lib/Target/R600/AMDGPUISelLowering.cpp
+++ b/lib/Target/R600/AMDGPUISelLowering.cpp
@@ -2763,12 +2763,6 @@ void AMDGPUTargetLowering::computeKnownBitsForTargetNode(
                               KnownZero, KnownOne, DAG, Depth);
     break;
 
-  case AMDGPUISD::CARRY:
-  case AMDGPUISD::BORROW: {
-    KnownZero = APInt::getHighBitsSet(32, 31);
-    break;
-  }
-
   case AMDGPUISD::BFE_I32:
   case AMDGPUISD::BFE_U32: {
     ConstantSDNode *CWidth = dyn_cast<ConstantSDNode>(Op.getOperand(2));
@@ -2811,10 +2805,6 @@ unsigned AMDGPUTargetLowering::ComputeNumSignBitsForTargetNode(
     return Width ? 32 - (Width->getZExtValue() & 0x1f) : 1;
   }
 
-  case AMDGPUISD::CARRY:
-  case AMDGPUISD::BORROW:
-    return 31;
-
   default:
     return 1;
   }