[llvm] [AMDGPU] Enable CodeGen for v_pk_fma_bf16 (PR #152578)

[Shilei Tian via llvm-commits]

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@@ -410,11 +412,12 @@ define amdgpu_ps void @v_test_mul_add_v2bf16_vvv(ptr addrspace(1) %out, <2 x bfl
 define amdgpu_ps void @v_test_mul_add_v2bf16_vss(ptr addrspace(1) %out, <2 x bfloat> %a, <2 x bfloat> inreg %b, <2 x bfloat> inreg %c) {
 ; GCN-LABEL: v_test_mul_add_v2bf16_vss:
 ; GCN:       ; %bb.0:
-; GCN-NEXT:    v_pk_mul_bf16 v2, v2, s0
-; GCN-NEXT:    s_delay_alu instid0(VALU_DEP_1)
-; GCN-NEXT:    v_pk_add_bf16 v2, v2, s1
+; GCN-NEXT:    v_pk_fma_bf16 v2, v2, s0, s1
 ; GCN-NEXT:    global_store_b32 v[0:1], v2, off
 ; GCN-NEXT:    s_endpgm
+
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shiltian wrote:

what happens to these gaps?

https://github.com/llvm/llvm-project/pull/152578