[RISCV][VLOPT] Pre-commit test for adding support for vfrec7.v

Signed-off-by: Mikhail R. Gadelha <mikhail@igalia.com>

Author: mikhailramalho

llvm/test/CodeGen/RISCV/rvv/vl-opt-instrs.ll

@@ -5323,3 +5323,30 @@ define <vscale x 4 x double> @vfrsqrt7(<vscale x 4 x float> %a) {
   %2 = call <vscale x 4 x double> @llvm.riscv.vfwmacc(<vscale x 4 x double> poison, <vscale x 4 x float> %a, <vscale x 4 x float> %1, iXLen 7, iXLen 6, iXLen 0)
   ret <vscale x 4 x double> %2
 }
+
+define <vscale x 4 x double> @vfrec7(<vscale x 4 x float> %a) {
+; NOVLOPT-LABEL: vfrec7:
+; NOVLOPT:       # %bb.0:
+; NOVLOPT-NEXT:    vsetivli zero, 7, e32, m2, ta, ma
+; NOVLOPT-NEXT:    vmv2r.v v12, v8
+; NOVLOPT-NEXT:    fsrmi a0, 0
+; NOVLOPT-NEXT:    vfrec7.v v14, v8
+; NOVLOPT-NEXT:    fsrm a0
+; NOVLOPT-NEXT:    vsetivli zero, 6, e32, m2, ta, ma
+; NOVLOPT-NEXT:    vfwmacc.vv v8, v12, v14
+; NOVLOPT-NEXT:    ret
+;
+; VLOPT-LABEL: vfrec7:
+; VLOPT:       # %bb.0:
+; VLOPT-NEXT:    vsetivli zero, 7, e32, m2, ta, ma
+; VLOPT-NEXT:    vmv2r.v v12, v8
+; VLOPT-NEXT:    fsrmi a0, 0
+; VLOPT-NEXT:    vfrec7.v v14, v8
+; VLOPT-NEXT:    fsrm a0
+; VLOPT-NEXT:    vsetivli zero, 6, e32, m2, ta, ma
+; VLOPT-NEXT:    vfwmacc.vv v8, v12, v14
+; VLOPT-NEXT:    ret
+  %1 = call <vscale x 4 x float> @llvm.riscv.vfrec7.nxv4f32(<vscale x 4 x float> poison, <vscale x 4 x float> %a, iXLen 0, iXLen 7)
+  %2 = call <vscale x 4 x double> @llvm.riscv.vfwmacc(<vscale x 4 x double> poison, <vscale x 4 x float> %a, <vscale x 4 x float> %1, iXLen 7, iXLen 6, iXLen 0)
+  ret <vscale x 4 x double> %2
+}