fix test case packed-fp32.ll, 90A & 942 allow pk_add to use imm

Author: Shoreshen

llvm/test/CodeGen/AMDGPU/packed-fp32.ll

@@ -2155,13 +2155,10 @@ define amdgpu_kernel void @fadd_fadd_fsub_0(<2 x float> %arg) {
 ; GFX90A-GISEL-LABEL: fadd_fadd_fsub_0:
 ; GFX90A-GISEL:       ; %bb.0: ; %bb
 ; GFX90A-GISEL-NEXT:    s_load_dwordx2 s[0:1], s[4:5], 0x24
-; GFX90A-GISEL-NEXT:    s_mov_b32 s2, 0
-; GFX90A-GISEL-NEXT:    s_mov_b32 s3, s2
-; GFX90A-GISEL-NEXT:    v_pk_mov_b32 v[0:1], s[2:3], s[2:3] op_sel:[0,1]
 ; GFX90A-GISEL-NEXT:    s_waitcnt lgkmcnt(0)
-; GFX90A-GISEL-NEXT:    v_pk_add_f32 v[0:1], s[0:1], v[0:1]
+; GFX90A-GISEL-NEXT:    v_pk_add_f32 v[0:1], s[0:1], 0 op_sel_hi:[1,0]
 ; GFX90A-GISEL-NEXT:    v_mov_b32_e32 v0, v1
-; GFX90A-GISEL-NEXT:    v_pk_add_f32 v[0:1], v[0:1], 0
+; GFX90A-GISEL-NEXT:    v_pk_add_f32 v[0:1], v[0:1], 0 op_sel_hi:[1,0]
 ; GFX90A-GISEL-NEXT:    v_mov_b32_e32 v2, s0
 ; GFX90A-GISEL-NEXT:    v_mov_b32_e32 v3, v0
 ; GFX90A-GISEL-NEXT:    flat_store_dwordx2 v[0:1], v[2:3]
@@ -2170,14 +2167,11 @@ define amdgpu_kernel void @fadd_fadd_fsub_0(<2 x float> %arg) {
 ; GFX942-GISEL-LABEL: fadd_fadd_fsub_0:
 ; GFX942-GISEL:       ; %bb.0: ; %bb
 ; GFX942-GISEL-NEXT:    s_load_dwordx2 s[0:1], s[4:5], 0x24
-; GFX942-GISEL-NEXT:    s_mov_b32 s2, 0
-; GFX942-GISEL-NEXT:    s_mov_b32 s3, s2
-; GFX942-GISEL-NEXT:    v_mov_b64_e32 v[0:1], s[2:3]
 ; GFX942-GISEL-NEXT:    s_waitcnt lgkmcnt(0)
-; GFX942-GISEL-NEXT:    v_pk_add_f32 v[0:1], s[0:1], v[0:1]
+; GFX942-GISEL-NEXT:    v_pk_add_f32 v[0:1], s[0:1], 0 op_sel_hi:[1,0]
 ; GFX942-GISEL-NEXT:    s_nop 0
 ; GFX942-GISEL-NEXT:    v_mov_b32_e32 v0, v1
-; GFX942-GISEL-NEXT:    v_pk_add_f32 v[0:1], v[0:1], 0
+; GFX942-GISEL-NEXT:    v_pk_add_f32 v[0:1], v[0:1], 0 op_sel_hi:[1,0]
 ; GFX942-GISEL-NEXT:    v_mov_b32_e32 v2, s0
 ; GFX942-GISEL-NEXT:    v_mov_b32_e32 v3, v0
 ; GFX942-GISEL-NEXT:    flat_store_dwordx2 v[0:1], v[2:3]