[llvm] [X86] Make ISD::ROTL/ROTR vXi16 vector rotates legal on VBMI2 targets (PR #184768)

[Phoebe Wang via llvm-commits]

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@@ -12495,6 +12495,55 @@ let Predicates = [HasVBMI2, NoVLX] in {
   defm : vbmi2_funnel_novlx<v32i16_info, v8i16x_info,  VPSHRDWZrri, X86VShrd, VPSHRDVWZr, fshr, 1>;
 }
 
+// Use VPSHLD/VPSHRD to implement rotations.
+multiclass vbmi2_rotate<X86VectorVTInfo _, Instruction InstrStrRI, SDNode OpNodeRI,
+                                           Instruction InstrStrRR, SDNode OpNodeRR> {
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phoebewang wrote:

Indention

https://github.com/llvm/llvm-project/pull/184768