[llvm] [X86] Remove redundant TEST after shifts when count is non-zero (PR #169069)

[Phoebe Wang via llvm-commits]

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@@ -275,6 +275,33 @@ define i32 @ashr_var_amt_never_zero(i32 %a0, i32 %a1, i32 %a2, i32 %a3) {
   ret i32 %r
 }
 
+define i1 @ashr_nonezero_removes_test_optsize(i32 %val, i32 %amt) optsize {
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phoebewang wrote:

Does optsize matter here? I don't see any special code for it.

https://github.com/llvm/llvm-project/pull/169069