[AArch64] NFC: Precursory test

Author: sdesmalen-arm

llvm/test/CodeGen/AArch64/sve-streaming-mode-fixed-length-fp-arith.ll

@@ -214,6 +214,19 @@ define <2 x float> @fdiv_v2f32(<2 x float> %op1, <2 x float> %op2) {
   ret <2 x float> %res
 }
 
+; Test that we don't optimise this using a NEON instruction, when
+; NEON is not available.
+define <2 x float> @fdiv_v232_pow2(<2 x i32> %in) {
+; CHECK-LABEL: fdiv_v232_pow2:
+; CHECK:       // %bb.0: // %entry
+; CHECK-NEXT:    scvtf v0.2s, v0.2s, #4
+; CHECK-NEXT:    ret
+entry:
+  %vcvt.i = sitofp <2 x i32> %in to <2 x float>
+  %div.i = fdiv <2 x float> %vcvt.i, <float 16.0, float 16.0>
+  ret <2 x float> %div.i
+}
+
 define <4 x float> @fdiv_v4f32(<4 x float> %op1, <4 x float> %op2) {
 ; CHECK-LABEL: fdiv_v4f32:
 ; CHECK:       // %bb.0: