Remove redundant test

Author: jayfoad

llvm/test/CodeGen/AMDGPU/fmaximum3.ll

@@ -3766,69 +3766,3 @@ define <2 x double> @v_no_fmaximum3_f64__multi_use(double %a, double %b, double
   %insert.1 = insertelement <2 x double> %insert.0, double %max1, i32 1
   ret <2 x double> %insert.1
 }
-
-; Checks whether the test passes; performMinMaxCombine() should not optimize vector patterns of maximum3
-; since there are no pack instructions for fmaximum3.
-define <2 x half> @no_fmaximum3_v2f16(<2 x half> %a, <2 x half> %b, <2 x half> %c, <2 x half> %d) {
-; GFX12-LABEL: no_fmaximum3_v2f16:
-; GFX12:       ; %bb.0: ; %entry
-; GFX12-NEXT:    s_wait_loadcnt_dscnt 0x0
-; GFX12-NEXT:    s_wait_expcnt 0x0
-; GFX12-NEXT:    s_wait_samplecnt 0x0
-; GFX12-NEXT:    s_wait_bvhcnt 0x0
-; GFX12-NEXT:    s_wait_kmcnt 0x0
-; GFX12-NEXT:    v_pk_maximum_f16 v0, v0, v1
-; GFX12-NEXT:    s_delay_alu instid0(VALU_DEP_1) | instskip(NEXT) | instid1(VALU_DEP_1)
-; GFX12-NEXT:    v_pk_maximum_f16 v0, v2, v0
-; GFX12-NEXT:    v_pk_maximum_f16 v0, v0, v3
-; GFX12-NEXT:    s_setpc_b64 s[30:31]
-;
-; GFX940-LABEL: no_fmaximum3_v2f16:
-; GFX940:       ; %bb.0: ; %entry
-; GFX940-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
-; GFX940-NEXT:    v_pk_max_f16 v4, v0, v1
-; GFX940-NEXT:    v_mov_b32_e32 v5, 0x7e00
-; GFX940-NEXT:    v_cmp_o_f16_e32 vcc, v0, v1
-; GFX940-NEXT:    s_mov_b32 s0, 0x5040100
-; GFX940-NEXT:    s_nop 0
-; GFX940-NEXT:    v_cndmask_b32_e32 v6, v5, v4, vcc
-; GFX940-NEXT:    v_lshrrev_b32_e32 v4, 16, v4
-; GFX940-NEXT:    v_cmp_o_f16_sdwa vcc, v0, v1 src0_sel:WORD_1 src1_sel:WORD_1
-; GFX940-NEXT:    s_nop 1
-; GFX940-NEXT:    v_cndmask_b32_e32 v0, v5, v4, vcc
-; GFX940-NEXT:    v_perm_b32 v1, v0, v6, s0
-; GFX940-NEXT:    v_pk_max_f16 v1, v2, v1
-; GFX940-NEXT:    v_cmp_o_f16_e32 vcc, v2, v6
-; GFX940-NEXT:    s_nop 1
-; GFX940-NEXT:    v_cndmask_b32_e32 v4, v5, v1, vcc
-; GFX940-NEXT:    v_lshrrev_b32_e32 v1, 16, v1
-; GFX940-NEXT:    v_cmp_o_f16_sdwa vcc, v2, v0 src0_sel:WORD_1 src1_sel:DWORD
-; GFX940-NEXT:    s_nop 1
-; GFX940-NEXT:    v_cndmask_b32_e32 v0, v5, v1, vcc
-; GFX940-NEXT:    v_perm_b32 v1, v0, v4, s0
-; GFX940-NEXT:    v_pk_max_f16 v1, v1, v3
-; GFX940-NEXT:    v_cmp_o_f16_e32 vcc, v4, v3
-; GFX940-NEXT:    s_nop 1
-; GFX940-NEXT:    v_cndmask_b32_e32 v2, v5, v1, vcc
-; GFX940-NEXT:    v_lshrrev_b32_e32 v1, 16, v1
-; GFX940-NEXT:    v_cmp_o_f16_sdwa vcc, v0, v3 src0_sel:DWORD src1_sel:WORD_1
-; GFX940-NEXT:    s_nop 1
-; GFX940-NEXT:    v_cndmask_b32_e32 v0, v5, v1, vcc
-; GFX940-NEXT:    v_perm_b32 v0, v0, v2, s0
-; GFX940-NEXT:    s_setpc_b64 s[30:31]
-;
-; GFX950-LABEL: no_fmaximum3_v2f16:
-; GFX950:       ; %bb.0: ; %entry
-; GFX950-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
-; GFX950-NEXT:    v_pk_maximum3_f16 v0, v0, v1, v1
-; GFX950-NEXT:    s_nop 0
-; GFX950-NEXT:    v_pk_maximum3_f16 v0, v2, v0, v0
-; GFX950-NEXT:    s_nop 0
-; GFX950-NEXT:    v_pk_maximum3_f16 v0, v0, v3, v3
-; GFX950-NEXT:    s_setpc_b64 s[30:31]
-entry:
-  %max = call <2 x half> @llvm.maximum.v2f16(<2 x half> %a, <2 x half> %b)
-  %max1 = call <2 x half> @llvm.maximum.v2f16(<2 x half> %c, <2 x half> %max)
-  %res = call <2 x half> @llvm.maximum.v2f16(<2 x half> %max1, <2 x half> %d)
-  ret <2 x half> %res
-}