[TOSA] Add lowering for tosa.sin and tosa.cos (#99651)

Lower tosa ops to `mlir::math::SinOp` and `mlir::math::CosOp` as part of
the tosa to linalg conversion.
Added lit tests for conversion.

Author: dchauhan-arm

mlir/lib/Conversion/TosaToLinalg/TosaToLinalg.cpp

@@ -298,6 +298,14 @@ static Value createLinalgBodyCalculationForElementwiseOp(
   if (isa<tosa::ExpOp>(op) && isa<FloatType>(elementTy))
     return rewriter.create<mlir::math::ExpOp>(loc, resultTypes, args);
 
+  // tosa::SinOp
+  if (isa<tosa::SinOp>(op) && isa<FloatType>(elementTy))
+    return rewriter.create<mlir::math::SinOp>(loc, resultTypes, args);
+
+  // tosa::CosOp
+  if (isa<tosa::CosOp>(op) && isa<FloatType>(elementTy))
+    return rewriter.create<mlir::math::CosOp>(loc, resultTypes, args);
+
   // tosa::TanhOp
   if (isa<tosa::TanhOp>(op) && isa<FloatType>(elementTy))
     return rewriter.create<mlir::math::TanhOp>(loc, resultTypes, args);
@@ -2598,6 +2606,8 @@ void mlir::tosa::populateTosaToLinalgConversionPatterns(
       PointwiseConverter<tosa::LogOp>,
       PointwiseConverter<tosa::ExpOp>,
       PointwiseConverter<tosa::AbsOp>,
+      PointwiseConverter<tosa::SinOp>,
+      PointwiseConverter<tosa::CosOp>,
       PointwiseConverter<tosa::TanhOp>,
       PointwiseConverter<tosa::ErfOp>,
       PointwiseConverter<tosa::BitwiseAndOp>,

mlir/test/Conversion/TosaToLinalg/tosa-to-linalg.mlir

@@ -545,6 +545,14 @@ func.func @test_simple_f32(%arg0: tensor<1xf32>) -> () {
   // CHECK: math.erf
   %24 = tosa.erf %0 : (tensor<1xf32>) -> tensor<1xf32>
 
+  // CHECK: linalg.generic
+  // CHECK: math.sin
+  %25 = tosa.sin %arg0 : (tensor<1xf32>) -> tensor<1xf32>
+
+  // CHECK: linalg.generic
+  // CHECK: math.cos
+  %26 = tosa.cos %arg0 : (tensor<1xf32>) -> tensor<1xf32>
+
   return
 }