PTX: Attempt to cleanup/unify the handling of FP rounding modes. This requires

us to manually provide Pat<> definitions for all FP instruction patterns.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140849 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 27 insertions, 0 deletions

diff --git a/lib/Target/PTX/PTXInstrFormats.td b/lib/Target/PTX/PTXInstrFormats.td
index 6632bbfbc5..397fdc319a 100644
--- a/lib/Target/PTX/PTXInstrFormats.td
+++ b/lib/Target/PTX/PTXInstrFormats.td
@@ -7,12 +7,39 @@
 //
 //===----------------------------------------------------------------------===//
 
+
+// Rounding Mode Specifier
+/*class RoundingMode<bits<3> val> {
+  bits<3> Value = val;
+}
+
+def RndDefault     : RoundingMode<0>;
+def RndNearestEven : RoundingMode<1>;
+def RndNearestZero : RoundingMode<2>;
+def RndNegInf      : RoundingMode<3>;
+def RndPosInf      : RoundingMode<4>;
+def RndApprox      : RoundingMode<5>;*/
+
+
+// Rounding Mode Operand
+def RndMode : Operand<i32> {
+  let PrintMethod = "printRoundingMode";
+}
+
+def RndDefault : PatLeaf<(i32 0)>;
+
 // PTX Predicate operand, default to (0, 0) = (zero-reg, none).
 // Leave PrintMethod empty; predicate printing is defined elsewhere.
 def pred : PredicateOperand<OtherVT, (ops RegPred, i32imm),
                                      (ops (i1 zero_reg), (i32 2))>;
 
+def RndModeOperand : Operand<OtherVT> {
+  let MIOperandInfo = (ops i32imm);
+}
+
+// Instruction Types
 let Namespace = "PTX" in {
+
   class InstPTX<dag oops, dag iops, string asmstr, list<dag> pattern>
     : Instruction {
       dag OutOperandList = oops;