[NFC][MLIR][std] Clean up ArithmeticCastOps

The documentation on these was out of sync with the implementation. Also
the declaration of inputs was repeated when it is already part of the
ArithmeticCastOp definition.

Reviewed By: rriddle

Differential Revision: https://reviews.llvm.org/D105934

mlir/include/mlir/Dialect/StandardOps/IR/Ops.td

@@ -49,7 +49,8 @@ class ArithmeticCastOp<string mnemonic, list<OpTrait> traits = []> :
       DeclareOpInterfaceMethods<VectorUnrollOpInterface>,
       NoSideEffect, SameOperandsAndResultShape,
       DeclareOpInterfaceMethods<CastOpInterface>]> {
-  let results = (outs AnyType);
+  let arguments = (ins AnyType:$in);
+  let results = (outs AnyType:$out);
 
   let builders = [
     OpBuilder<(ins "Value":$source, "Type":$destType), [{
@@ -1146,12 +1147,12 @@ def FmaFOp : FloatTernaryOp<"fmaf"> {
 // FPExtOp
 //===----------------------------------------------------------------------===//
 
-def FPExtOp : ArithmeticCastOp<"fpext">, Arguments<(ins AnyType:$in)> {
+def FPExtOp : ArithmeticCastOp<"fpext"> {
   let summary = "cast from floating-point to wider floating-point";
   let description = [{
     Cast a floating-point value to a larger floating-point-typed value.
     The destination type must to be strictly wider than the source type.
-    Only scalars are currently supported.
+    When operating on vectors, casts elementwise.
   }];
 }
 
@@ -1159,11 +1160,12 @@ def FPExtOp : ArithmeticCastOp<"fpext">, Arguments<(ins AnyType:$in)> {
 // FPToSIOp
 //===----------------------------------------------------------------------===//
 
-def FPToSIOp : ArithmeticCastOp<"fptosi">, Arguments<(ins AnyType:$in)> {
+def FPToSIOp : ArithmeticCastOp<"fptosi"> {
   let summary = "cast from floating-point type to integer type";
   let description = [{
     Cast from a value interpreted as floating-point to the nearest (rounding
-    towards zero) signed integer value.
+    towards zero) signed integer value. When operating on vectors, casts
+    elementwise.
   }];
 }
 
@@ -1171,11 +1173,12 @@ def FPToSIOp : ArithmeticCastOp<"fptosi">, Arguments<(ins AnyType:$in)> {
 // FPToUIOp
 //===----------------------------------------------------------------------===//
 
-def FPToUIOp : ArithmeticCastOp<"fptoui">, Arguments<(ins AnyType:$in)> {
+def FPToUIOp : ArithmeticCastOp<"fptoui"> {
   let summary = "cast from floating-point type to integer type";
   let description = [{
     Cast from a value interpreted as floating-point to the nearest (rounding
-    towards zero) unsigned integer value.
+    towards zero) unsigned integer value. When operating on vectors, casts
+    elementwise.
   }];
 }
 
@@ -1183,13 +1186,13 @@ def FPToUIOp : ArithmeticCastOp<"fptoui">, Arguments<(ins AnyType:$in)> {
 // FPTruncOp
 //===----------------------------------------------------------------------===//
 
-def FPTruncOp : ArithmeticCastOp<"fptrunc">, Arguments<(ins AnyType:$in)> {
+def FPTruncOp : ArithmeticCastOp<"fptrunc"> {
   let summary = "cast from floating-point to narrower floating-point";
   let description = [{
     Truncate a floating-point value to a smaller floating-point-typed value.
     The destination type must be strictly narrower than the source type.
     If the value cannot be exactly represented, it is rounded using the default
-    rounding mode. Only scalars are currently supported.
+    rounding mode. When operating on vectors, casts elementwise.
   }];
 }
 
@@ -1197,7 +1200,7 @@ def FPTruncOp : ArithmeticCastOp<"fptrunc">, Arguments<(ins AnyType:$in)> {
 // IndexCastOp
 //===----------------------------------------------------------------------===//
 
-def IndexCastOp : ArithmeticCastOp<"index_cast">, Arguments<(ins AnyType:$in)> {
+def IndexCastOp : ArithmeticCastOp<"index_cast"> {
   let summary = "cast between index and integer types";
   let description = [{
     Casts between scalar or vector integers and corresponding 'index' scalar or
@@ -1678,13 +1681,13 @@ def SignExtendIOp : Std_Op<"sexti", [NoSideEffect,
 // SIToFPOp
 //===----------------------------------------------------------------------===//
 
-def SIToFPOp : ArithmeticCastOp<"sitofp">, Arguments<(ins AnyType:$in)> {
+def SIToFPOp : ArithmeticCastOp<"sitofp"> {
   let summary = "cast from integer type to floating-point";
   let description = [{
-    Cast from a value interpreted as signed or vector of signed integers to the
-    corresponding floating-point scalar or vector value. If the value cannot be
-    exactly represented, it is rounded using the default rounding mode. Scalars
-    and vector types are currently supported.
+    Cast from a value interpreted as a signed integer to the corresponding
+    floating-point value. If the value cannot be exactly represented, it is
+    rounded using the default rounding mode. When operating on vectors, casts
+    elementwise.
   }];
 }
 
@@ -1884,13 +1887,13 @@ def TruncateIOp : Std_Op<"trunci", [NoSideEffect,
 // UIToFPOp
 //===----------------------------------------------------------------------===//
 
-def UIToFPOp : ArithmeticCastOp<"uitofp">, Arguments<(ins AnyType:$in)> {
+def UIToFPOp : ArithmeticCastOp<"uitofp"> {
   let summary = "cast from unsigned integer type to floating-point";
   let description = [{
-    Cast from a value interpreted as unsigned integer or vector of unsigned
-    integers to the corresponding scalar or vector floating-point value. If the
-    value cannot be exactly represented, it is rounded using the default
-    rounding mode. Scalars and vector types are currently supported.
+    Cast from a value interpreted as unsigned integer to the corresponding
+    floating-point value. If the value cannot be exactly represented, it is
+    rounded using the default rounding mode. When operating on vectors, casts
+    elementwise.
   }];
 }