[llvm-branch-commits] [llvm] AMDGPU: Handle minimumnum/maximumnum in fneg combines (PR #139133)

[Matt Arsenault via llvm-branch-commits]

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@@ -2513,9 +2513,9 @@ define { float, float } @v_fneg_maximumnum_multi_use_maximumnum_f32_ieee(float %
 ; GCN-LABEL: v_fneg_maximumnum_multi_use_maximumnum_f32_ieee:
 ; GCN:       ; %bb.0:
 ; GCN-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
-; GCN-NEXT:    v_mul_f32_e32 v1, 1.0, v1
-; GCN-NEXT:    v_mul_f32_e32 v0, 1.0, v0
-; GCN-NEXT:    v_min_f32_e64 v0, -v0, -v1
+; GCN-NEXT:    v_mul_f32_e32 v1, -1.0, v1
+; GCN-NEXT:    v_mul_f32_e32 v0, -1.0, v0
+; GCN-NEXT:    v_min_f32_e32 v0, v0, v1
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arsenm wrote:

This is an encoding size improvement 

https://github.com/llvm/llvm-project/pull/139133