Merge pull request swiftlang#20998 from rudkx/scale-test-simd-add

Add a scale test for SIMD addition.

Author: rudkx

validation-test/Sema/type_checker_perf/fast/simd_add.gyb

@@ -0,0 +1,17 @@
+// RUN: %scale-test --begin 3 --end 7 --step 1 --select NumLeafScopes %s
+// REQUIRES: OS=macosx
+// REQUIRES: asserts
+
+import SIMDOperators
+
+func test(_ s: SIMD4<Float>,
+%for i in range(0, N):
+  _ s${i}: SIMD4<Float>,
+%end
+  _ s${N}: SIMD4<Float>
+) -> SIMD4<Float> {
+  return s
+%for i in range(0, N):
+  + s${i}
+%end
+}