[llvm] [X86] Use RORX over SHR imm (PR #77964)

[Bryce Wilson via llvm-commits]

================
@@ -157,7 +157,8 @@ define i1 @shr_to_shl_eq_i16_s1_fail(i16 %x) {
 ; CHECK:       # %bb.0:
 ; CHECK-NEXT:    movzwl %di, %eax
 ; CHECK-NEXT:    andl $32766, %edi # imm = 0x7FFE
-; CHECK-NEXT:    shrl %eax
+; CHECK-NOBMI-NEXT:    shrl %eax
----------------
Bryce-MW wrote:

I knew I was missing something. Thank you!

https://github.com/llvm/llvm-project/pull/77964