[llvm] [DAGCombiner] Set shift flags during visit. (PR #91239)

[Matt Arsenault via llvm-commits]

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@@ -14,6 +14,10 @@ define amdgpu_ps float @main(float %arg0, float %arg1) #0 {
 ; SI-NEXT:    v_cmp_eq_u32_e32 vcc, 1, v0
 ; SI-NEXT:    v_cndmask_b32_e32 v0, 0, v1, vcc
 ; SI-NEXT:    v_cvt_pkrtz_f16_f32_e32 v0, s0, v0
+; SI-NEXT:    v_and_b32_e32 v1, 0xffff, v0
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arsenm wrote:

Regression 

https://github.com/llvm/llvm-project/pull/91239