Rename CONVERT_RNDSAT td name to better match it

[arsenm]

Summary

I want to define an instruction called cvt, which was
surprisingly already taken by this. This node is not supposed
to be directly used, and has a somewhat surprising name. Rename it
to make it more obvious what it is, and more appropriate for
a private node.

[ab]

So.. I've been wondering about this for a while: these (and the
associated ISD opcode) don't seem to be referenced by any target, and
the comment says the opcode is pretty much deprecated. Maybe we should
just remove them completely?

• Ahmed

include/llvm/Target/TargetSelectionDAG.td

                                 SDTypeProfile<1, -1, [SDTCisPtrTy<1>]>, []>;
 
 // Do not use cvt directly. Use cvt forms below
-def cvt : SDNode<"ISD::CONVERT_RNDSAT", SDTConvertOp>;
+def convert_rndsat : SDNode<"ISD::CONVERT_RNDSAT", SDTConvertOp>;
 
 def SDT_assertext : SDTypeProfile<1, 1,
   [SDTCisInt<0>, SDTCisInt<1>, SDTCisSameAs<1, 0>]>;

 // Selection DAG CONVERT_RNDSAT patterns
 
 def cvtff : PatFrag<(ops node:$val, node:$dty, node:$sty, node:$rd, node:$sat),
-    (cvt node:$val, node:$dty, node:$sty, node:$rd, node:$sat), [{
+    (convert_rndsat node:$val, node:$dty, node:$sty, node:$rd, node:$sat), [{
        return cast<CvtRndSatSDNode>(N)->getCvtCode() == ISD::CVT_FF;
     }]>;
 
 def cvtss : PatFrag<(ops node:$val, node:$dty, node:$sty, node:$rd, node:$sat),
-    (cvt node:$val, node:$dty, node:$sty, node:$rd, node:$sat), [{
+    (convert_rndsat node:$val, node:$dty, node:$sty, node:$rd, node:$sat), [{
        return cast<CvtRndSatSDNode>(N)->getCvtCode() == ISD::CVT_SS;
     }]>;
 
 def cvtsu : PatFrag<(ops node:$val, node:$dty, node:$sty, node:$rd, node:$sat),
-    (cvt node:$val, node:$dty, node:$sty, node:$rd, node:$sat), [{
+    (convert_rndsat node:$val, node:$dty, node:$sty, node:$rd, node:$sat), [{
        return cast<CvtRndSatSDNode>(N)->getCvtCode() == ISD::CVT_SU;
     }]>;
 
 def cvtus : PatFrag<(ops node:$val, node:$dty, node:$sty, node:$rd, node:$sat),
-    (cvt node:$val, node:$dty, node:$sty, node:$rd, node:$sat), [{
+    (convert_rndsat node:$val, node:$dty, node:$sty, node:$rd, node:$sat), [{
        return cast<CvtRndSatSDNode>(N)->getCvtCode() == ISD::CVT_US;
     }]>;
 
 def cvtuu : PatFrag<(ops node:$val, node:$dty, node:$sty, node:$rd, node:$sat),
-    (cvt node:$val, node:$dty, node:$sty, node:$rd, node:$sat), [{
+    (convert_rndsat node:$val, node:$dty, node:$sty, node:$rd, node:$sat), [{
        return cast<CvtRndSatSDNode>(N)->getCvtCode() == ISD::CVT_UU;
     }]>;
 
 def cvtsf : PatFrag<(ops node:$val, node:$dty, node:$sty, node:$rd, node:$sat),
-    (cvt node:$val, node:$dty, node:$sty, node:$rd, node:$sat), [{
+    (convert_rndsat node:$val, node:$dty, node:$sty, node:$rd, node:$sat), [{
        return cast<CvtRndSatSDNode>(N)->getCvtCode() == ISD::CVT_SF;
     }]>;
 
 def cvtuf : PatFrag<(ops node:$val, node:$dty, node:$sty, node:$rd, node:$sat),
-    (cvt node:$val, node:$dty, node:$sty, node:$rd, node:$sat), [{
+    (convert_rndsat node:$val, node:$dty, node:$sty, node:$rd, node:$sat), [{
        return cast<CvtRndSatSDNode>(N)->getCvtCode() == ISD::CVT_UF;
     }]>;
 
 def cvtfs : PatFrag<(ops node:$val, node:$dty, node:$sty, node:$rd, node:$sat),
-    (cvt node:$val, node:$dty, node:$sty, node:$rd, node:$sat), [{
+    (convert_rndsat node:$val, node:$dty, node:$sty, node:$rd, node:$sat), [{
        return cast<CvtRndSatSDNode>(N)->getCvtCode() == ISD::CVT_FS;
     }]>;
 
 def cvtfu : PatFrag<(ops node:$val, node:$dty, node:$sty, node:$rd, node:$sat),
-    (cvt node:$val, node:$dty, node:$sty, node:$rd, node:$sat), [{
+    (convert_rndsat node:$val, node:$dty, node:$sty, node:$rd, node:$sat), [{
        return cast<CvtRndSatSDNode>(N)->getCvtCode() == ISD::CVT_FU;
     }]>;