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      1 ; RUN: llc < %s -march=amdgcn -mcpu=SI -verify-machineinstrs | FileCheck %s
      2 ; RUN: llc < %s -march=amdgcn -mcpu=tonga -verify-machineinstrs | FileCheck %s
      3 
      4 ; This test checks that no VGPR to SGPR copies are created by the register
      5 ; allocator.
      6 
      7 
      8 declare <4 x float> @llvm.SI.image.sample.v2i32(<2 x i32>, <8 x i32>, <4 x i32>, i32, i32, i32, i32, i32, i32, i32, i32) #1
      9 
     10 
     11 ; CHECK-LABEL: {{^}}phi1:
     12 ; CHECK: s_buffer_load_dword [[DST:s[0-9]]], {{s\[[0-9]+:[0-9]+\]}}, 0x0
     13 ; CHECK: v_mov_b32_e32 v{{[0-9]}}, [[DST]]
     14 define amdgpu_ps void @phi1(<16 x i8> addrspace(2)* inreg %arg, <16 x i8> addrspace(2)* inreg %arg1, <8 x i32> addrspace(2)* inreg %arg2, i32 inreg %arg3, <2 x i32> %arg4, <2 x i32> %arg5, <2 x i32> %arg6, <3 x i32> %arg7, <2 x i32> %arg8, <2 x i32> %arg9, <2 x i32> %arg10, float %arg11, float %arg12, float %arg13, float %arg14, float %arg15, float %arg16, float %arg17, float %arg18, float %arg19) #0 {
     15 main_body:
     16   %tmp = getelementptr <16 x i8>, <16 x i8> addrspace(2)* %arg, i32 0
     17   %tmp20 = load <16 x i8>, <16 x i8> addrspace(2)* %tmp, !tbaa !0
     18   %tmp21 = call float @llvm.SI.load.const(<16 x i8> %tmp20, i32 0)
     19   %tmp22 = call float @llvm.SI.load.const(<16 x i8> %tmp20, i32 16)
     20   %tmp23 = call float @llvm.SI.load.const(<16 x i8> %tmp20, i32 32)
     21   %tmp24 = fptosi float %tmp22 to i32
     22   %tmp25 = icmp ne i32 %tmp24, 0
     23   br i1 %tmp25, label %ENDIF, label %ELSE
     24 
     25 ELSE:                                             ; preds = %main_body
     26   %tmp26 = fsub float -0.000000e+00, %tmp21
     27   br label %ENDIF
     28 
     29 ENDIF:                                            ; preds = %ELSE, %main_body
     30   %temp.0 = phi float [ %tmp26, %ELSE ], [ %tmp21, %main_body ]
     31   %tmp27 = fadd float %temp.0, %tmp23
     32   call void @llvm.SI.export(i32 15, i32 1, i32 1, i32 0, i32 0, float %tmp27, float %tmp27, float 0.000000e+00, float 1.000000e+00)
     33   ret void
     34 }
     35 
     36 ; Make sure this program doesn't crash
     37 ; CHECK-LABEL: {{^}}phi2:
     38 define amdgpu_ps void @phi2(<16 x i8> addrspace(2)* inreg %arg, <16 x i8> addrspace(2)* inreg %arg1, <8 x i32> addrspace(2)* inreg %arg2, i32 inreg %arg3, <2 x i32> %arg4, <2 x i32> %arg5, <2 x i32> %arg6, <3 x i32> %arg7, <2 x i32> %arg8, <2 x i32> %arg9, <2 x i32> %arg10, float %arg11, float %arg12, float %arg13, float %arg14, float %arg15, float %arg16, float %arg17, float %arg18, float %arg19) #0 {
     39 main_body:
     40   %tmp = getelementptr <16 x i8>, <16 x i8> addrspace(2)* %arg, i32 0
     41   %tmp20 = load <16 x i8>, <16 x i8> addrspace(2)* %tmp, !tbaa !0
     42   %tmp21 = call float @llvm.SI.load.const(<16 x i8> %tmp20, i32 16)
     43   %tmp22 = call float @llvm.SI.load.const(<16 x i8> %tmp20, i32 32)
     44   %tmp23 = call float @llvm.SI.load.const(<16 x i8> %tmp20, i32 36)
     45   %tmp24 = call float @llvm.SI.load.const(<16 x i8> %tmp20, i32 40)
     46   %tmp25 = call float @llvm.SI.load.const(<16 x i8> %tmp20, i32 48)
     47   %tmp26 = call float @llvm.SI.load.const(<16 x i8> %tmp20, i32 52)
     48   %tmp27 = call float @llvm.SI.load.const(<16 x i8> %tmp20, i32 56)
     49   %tmp28 = call float @llvm.SI.load.const(<16 x i8> %tmp20, i32 64)
     50   %tmp29 = call float @llvm.SI.load.const(<16 x i8> %tmp20, i32 68)
     51   %tmp30 = call float @llvm.SI.load.const(<16 x i8> %tmp20, i32 72)
     52   %tmp31 = call float @llvm.SI.load.const(<16 x i8> %tmp20, i32 76)
     53   %tmp32 = call float @llvm.SI.load.const(<16 x i8> %tmp20, i32 80)
     54   %tmp33 = call float @llvm.SI.load.const(<16 x i8> %tmp20, i32 84)
     55   %tmp34 = call float @llvm.SI.load.const(<16 x i8> %tmp20, i32 88)
     56   %tmp35 = call float @llvm.SI.load.const(<16 x i8> %tmp20, i32 92)
     57   %tmp36 = getelementptr <8 x i32>, <8 x i32> addrspace(2)* %arg2, i32 0
     58   %tmp37 = load <8 x i32>, <8 x i32> addrspace(2)* %tmp36, !tbaa !0
     59   %tmp38 = getelementptr <16 x i8>, <16 x i8> addrspace(2)* %arg1, i32 0
     60   %tmp39 = load <16 x i8>, <16 x i8> addrspace(2)* %tmp38, !tbaa !0
     61   %tmp40 = call float @llvm.SI.fs.interp(i32 0, i32 0, i32 %arg3, <2 x i32> %arg5)
     62   %tmp41 = call float @llvm.SI.fs.interp(i32 1, i32 0, i32 %arg3, <2 x i32> %arg5)
     63   %tmp42 = call float @llvm.SI.fs.interp(i32 0, i32 1, i32 %arg3, <2 x i32> %arg5)
     64   %tmp43 = call float @llvm.SI.fs.interp(i32 1, i32 1, i32 %arg3, <2 x i32> %arg5)
     65   %tmp44 = call float @llvm.SI.fs.interp(i32 2, i32 1, i32 %arg3, <2 x i32> %arg5)
     66   %tmp45 = bitcast float %tmp40 to i32
     67   %tmp46 = bitcast float %tmp41 to i32
     68   %tmp47 = insertelement <2 x i32> undef, i32 %tmp45, i32 0
     69   %tmp48 = insertelement <2 x i32> %tmp47, i32 %tmp46, i32 1
     70   %tmp39.bc = bitcast <16 x i8> %tmp39 to <4 x i32>
     71   %tmp49 = call <4 x float> @llvm.SI.image.sample.v2i32(<2 x i32> %tmp48, <8 x i32> %tmp37, <4 x i32> %tmp39.bc, i32 15, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0)
     72   %tmp50 = extractelement <4 x float> %tmp49, i32 2
     73   %tmp51 = call float @fabs(float %tmp50)
     74   %tmp52 = fmul float %tmp42, %tmp42
     75   %tmp53 = fmul float %tmp43, %tmp43
     76   %tmp54 = fadd float %tmp53, %tmp52
     77   %tmp55 = fmul float %tmp44, %tmp44
     78   %tmp56 = fadd float %tmp54, %tmp55
     79   %tmp57 = call float @llvm.amdgcn.rsq.f32(float %tmp56)
     80   %tmp58 = fmul float %tmp42, %tmp57
     81   %tmp59 = fmul float %tmp43, %tmp57
     82   %tmp60 = fmul float %tmp44, %tmp57
     83   %tmp61 = fmul float %tmp58, %tmp22
     84   %tmp62 = fmul float %tmp59, %tmp23
     85   %tmp63 = fadd float %tmp62, %tmp61
     86   %tmp64 = fmul float %tmp60, %tmp24
     87   %tmp65 = fadd float %tmp63, %tmp64
     88   %tmp66 = fsub float -0.000000e+00, %tmp25
     89   %tmp67 = fmul float %tmp65, %tmp51
     90   %tmp68 = fadd float %tmp67, %tmp66
     91   %tmp69 = fmul float %tmp26, %tmp68
     92   %tmp70 = fmul float %tmp27, %tmp68
     93   %tmp71 = call float @fabs(float %tmp69)
     94   %tmp72 = fcmp olt float 0x3EE4F8B580000000, %tmp71
     95   %tmp73 = sext i1 %tmp72 to i32
     96   %tmp74 = bitcast i32 %tmp73 to float
     97   %tmp75 = bitcast float %tmp74 to i32
     98   %tmp76 = icmp ne i32 %tmp75, 0
     99   br i1 %tmp76, label %IF, label %ENDIF
    100 
    101 IF:                                               ; preds = %main_body
    102   %tmp77 = fsub float -0.000000e+00, %tmp69
    103   %tmp78 = call float @llvm.exp2.f32(float %tmp77)
    104   %tmp79 = fsub float -0.000000e+00, %tmp78
    105   %tmp80 = fadd float 1.000000e+00, %tmp79
    106   %tmp81 = fdiv float 1.000000e+00, %tmp69
    107   %tmp82 = fmul float %tmp80, %tmp81
    108   %tmp83 = fmul float %tmp31, %tmp82
    109   br label %ENDIF
    110 
    111 ENDIF:                                            ; preds = %IF, %main_body
    112   %temp4.0 = phi float [ %tmp83, %IF ], [ %tmp31, %main_body ]
    113   %tmp84 = call float @fabs(float %tmp70)
    114   %tmp85 = fcmp olt float 0x3EE4F8B580000000, %tmp84
    115   %tmp86 = sext i1 %tmp85 to i32
    116   %tmp87 = bitcast i32 %tmp86 to float
    117   %tmp88 = bitcast float %tmp87 to i32
    118   %tmp89 = icmp ne i32 %tmp88, 0
    119   br i1 %tmp89, label %IF25, label %ENDIF24
    120 
    121 IF25:                                             ; preds = %ENDIF
    122   %tmp90 = fsub float -0.000000e+00, %tmp70
    123   %tmp91 = call float @llvm.exp2.f32(float %tmp90)
    124   %tmp92 = fsub float -0.000000e+00, %tmp91
    125   %tmp93 = fadd float 1.000000e+00, %tmp92
    126   %tmp94 = fdiv float 1.000000e+00, %tmp70
    127   %tmp95 = fmul float %tmp93, %tmp94
    128   %tmp96 = fmul float %tmp35, %tmp95
    129   br label %ENDIF24
    130 
    131 ENDIF24:                                          ; preds = %IF25, %ENDIF
    132   %temp8.0 = phi float [ %tmp96, %IF25 ], [ %tmp35, %ENDIF ]
    133   %tmp97 = fmul float %tmp28, %temp4.0
    134   %tmp98 = fmul float %tmp29, %temp4.0
    135   %tmp99 = fmul float %tmp30, %temp4.0
    136   %tmp100 = fmul float %tmp32, %temp8.0
    137   %tmp101 = fadd float %tmp100, %tmp97
    138   %tmp102 = fmul float %tmp33, %temp8.0
    139   %tmp103 = fadd float %tmp102, %tmp98
    140   %tmp104 = fmul float %tmp34, %temp8.0
    141   %tmp105 = fadd float %tmp104, %tmp99
    142   %tmp106 = call float @llvm.pow.f32(float %tmp51, float %tmp21)
    143   %tmp107 = fsub float -0.000000e+00, %tmp101
    144   %tmp108 = fmul float %tmp107, %tmp106
    145   %tmp109 = fsub float -0.000000e+00, %tmp103
    146   %tmp110 = fmul float %tmp109, %tmp106
    147   %tmp111 = fsub float -0.000000e+00, %tmp105
    148   %tmp112 = fmul float %tmp111, %tmp106
    149   %tmp113 = call i32 @llvm.SI.packf16(float %tmp108, float %tmp110)
    150   %tmp114 = bitcast i32 %tmp113 to float
    151   %tmp115 = call i32 @llvm.SI.packf16(float %tmp112, float 1.000000e+00)
    152   %tmp116 = bitcast i32 %tmp115 to float
    153   call void @llvm.SI.export(i32 15, i32 1, i32 1, i32 0, i32 1, float %tmp114, float %tmp116, float %tmp114, float %tmp116)
    154   ret void
    155 }
    156 
    157 ; We just want ot make sure the program doesn't crash
    158 ; CHECK-LABEL: {{^}}loop:
    159 define amdgpu_ps void @loop(<16 x i8> addrspace(2)* inreg %arg, <16 x i8> addrspace(2)* inreg %arg1, <8 x i32> addrspace(2)* inreg %arg2, i32 inreg %arg3, <2 x i32> %arg4, <2 x i32> %arg5, <2 x i32> %arg6, <3 x i32> %arg7, <2 x i32> %arg8, <2 x i32> %arg9, <2 x i32> %arg10, float %arg11, float %arg12, float %arg13, float %arg14, float %arg15, float %arg16, float %arg17, float %arg18, float %arg19) #0 {
    160 main_body:
    161   %tmp = getelementptr <16 x i8>, <16 x i8> addrspace(2)* %arg, i32 0
    162   %tmp20 = load <16 x i8>, <16 x i8> addrspace(2)* %tmp, !tbaa !0
    163   %tmp21 = call float @llvm.SI.load.const(<16 x i8> %tmp20, i32 0)
    164   %tmp22 = call float @llvm.SI.load.const(<16 x i8> %tmp20, i32 4)
    165   %tmp23 = call float @llvm.SI.load.const(<16 x i8> %tmp20, i32 8)
    166   %tmp24 = call float @llvm.SI.load.const(<16 x i8> %tmp20, i32 12)
    167   %tmp25 = fptosi float %tmp24 to i32
    168   %tmp26 = bitcast i32 %tmp25 to float
    169   %tmp27 = bitcast float %tmp26 to i32
    170   br label %LOOP
    171 
    172 LOOP:                                             ; preds = %ENDIF, %main_body
    173   %temp4.0 = phi float [ %tmp21, %main_body ], [ %temp5.0, %ENDIF ]
    174   %temp5.0 = phi float [ %tmp22, %main_body ], [ %temp6.0, %ENDIF ]
    175   %temp6.0 = phi float [ %tmp23, %main_body ], [ %temp4.0, %ENDIF ]
    176   %temp8.0 = phi float [ 0.000000e+00, %main_body ], [ %tmp36, %ENDIF ]
    177   %tmp28 = bitcast float %temp8.0 to i32
    178   %tmp29 = icmp sge i32 %tmp28, %tmp27
    179   %tmp30 = sext i1 %tmp29 to i32
    180   %tmp31 = bitcast i32 %tmp30 to float
    181   %tmp32 = bitcast float %tmp31 to i32
    182   %tmp33 = icmp ne i32 %tmp32, 0
    183   br i1 %tmp33, label %IF, label %ENDIF
    184 
    185 IF:                                               ; preds = %LOOP
    186   call void @llvm.SI.export(i32 15, i32 1, i32 1, i32 0, i32 0, float %temp4.0, float %temp5.0, float %temp6.0, float 1.000000e+00)
    187   ret void
    188 
    189 ENDIF:                                            ; preds = %LOOP
    190   %tmp34 = bitcast float %temp8.0 to i32
    191   %tmp35 = add i32 %tmp34, 1
    192   %tmp36 = bitcast i32 %tmp35 to float
    193   br label %LOOP
    194 }
    195 
    196 ; Function Attrs: nounwind readnone
    197 declare float @llvm.SI.load.const(<16 x i8>, i32) #1
    198 
    199 ; Function Attrs: readonly
    200 declare float @fabs(float) #2
    201 
    202 declare void @llvm.SI.export(i32, i32, i32, i32, i32, float, float, float, float)
    203 
    204 ; Function Attrs: nounwind readnone
    205 declare float @llvm.SI.fs.interp(i32, i32, i32, <2 x i32>) #1
    206 
    207 ; Function Attrs: nounwind readnone
    208 declare <4 x float> @llvm.SI.sample.v2i32(<2 x i32>, <8 x i32>, <16 x i8>, i32) #1
    209 
    210 ; Function Attrs: readnone
    211 declare float @llvm.amdgcn.rsq.f32(float) #1
    212 
    213 declare float @llvm.exp2.f32(float) #1
    214 
    215 ; Function Attrs: nounwind readnone
    216 declare float @llvm.pow.f32(float, float) #1
    217 
    218 ; Function Attrs: nounwind readnone
    219 declare i32 @llvm.SI.packf16(float, float) #1
    220 
    221 ; This checks for a bug in the FixSGPRCopies pass where VReg96
    222 ; registers were being identified as an SGPR regclass which was causing
    223 ; an assertion failure.
    224 
    225 ; CHECK-LABEL: {{^}}sample_v3:
    226 ; CHECK: image_sample
    227 ; CHECK: image_sample
    228 ; CHECK: exp
    229 ; CHECK: s_endpgm
    230 define amdgpu_ps void @sample_v3([17 x <16 x i8>] addrspace(2)* byval %arg, [32 x <16 x i8>] addrspace(2)* byval %arg1, [16 x <8 x i32>] addrspace(2)* byval %arg2, float inreg %arg3, i32 inreg %arg4, <2 x i32> %arg5, <2 x i32> %arg6, <2 x i32> %arg7, <3 x i32> %arg8, <2 x i32> %arg9, <2 x i32> %arg10, <2 x i32> %arg11, float %arg12, float %arg13, float %arg14, float %arg15, float %arg16, float %arg17, float %arg18, float %arg19, float %arg20) #0 {
    231 entry:
    232   %tmp = getelementptr [17 x <16 x i8>], [17 x <16 x i8>] addrspace(2)* %arg, i64 0, i32 0
    233   %tmp21 = load <16 x i8>, <16 x i8> addrspace(2)* %tmp, !tbaa !0
    234   %tmp22 = call float @llvm.SI.load.const(<16 x i8> %tmp21, i32 16)
    235   %tmp23 = getelementptr [16 x <8 x i32>], [16 x <8 x i32>] addrspace(2)* %arg2, i64 0, i32 0
    236   %tmp24 = load <8 x i32>, <8 x i32> addrspace(2)* %tmp23, !tbaa !0
    237   %tmp25 = getelementptr [32 x <16 x i8>], [32 x <16 x i8>] addrspace(2)* %arg1, i64 0, i32 0
    238   %tmp26 = load <16 x i8>, <16 x i8> addrspace(2)* %tmp25, !tbaa !0
    239   %tmp27 = fcmp oeq float %tmp22, 0.000000e+00
    240   %tmp26.bc = bitcast <16 x i8> %tmp26 to <4 x i32>
    241   br i1 %tmp27, label %if, label %else
    242 
    243 if:                                               ; preds = %entry
    244   %val.if = call <4 x float> @llvm.SI.image.sample.v2i32(<2 x i32> zeroinitializer, <8 x i32> %tmp24, <4 x i32> %tmp26.bc, i32 15, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0)
    245   %val.if.0 = extractelement <4 x float> %val.if, i32 0
    246   %val.if.1 = extractelement <4 x float> %val.if, i32 1
    247   %val.if.2 = extractelement <4 x float> %val.if, i32 2
    248   br label %endif
    249 
    250 else:                                             ; preds = %entry
    251   %val.else = call <4 x float> @llvm.SI.image.sample.v2i32(<2 x i32> <i32 1, i32 0>, <8 x i32> %tmp24, <4 x i32> %tmp26.bc, i32 15, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0)
    252   %val.else.0 = extractelement <4 x float> %val.else, i32 0
    253   %val.else.1 = extractelement <4 x float> %val.else, i32 1
    254   %val.else.2 = extractelement <4 x float> %val.else, i32 2
    255   br label %endif
    256 
    257 endif:                                            ; preds = %else, %if
    258   %val.0 = phi float [ %val.if.0, %if ], [ %val.else.0, %else ]
    259   %val.1 = phi float [ %val.if.1, %if ], [ %val.else.1, %else ]
    260   %val.2 = phi float [ %val.if.2, %if ], [ %val.else.2, %else ]
    261   call void @llvm.SI.export(i32 15, i32 1, i32 1, i32 0, i32 1, float %val.0, float %val.1, float %val.2, float 0.000000e+00)
    262   ret void
    263 }
    264 
    265 ; CHECK-LABEL: {{^}}copy1:
    266 ; CHECK: buffer_load_dword
    267 ; CHECK: v_add
    268 ; CHECK: s_endpgm
    269 define void @copy1(float addrspace(1)* %out, float addrspace(1)* %in0) {
    270 entry:
    271   %tmp = load float, float addrspace(1)* %in0
    272   %tmp1 = fcmp oeq float %tmp, 0.000000e+00
    273   br i1 %tmp1, label %if0, label %endif
    274 
    275 if0:                                              ; preds = %entry
    276   %tmp2 = bitcast float %tmp to i32
    277   %tmp3 = fcmp olt float %tmp, 0.000000e+00
    278   br i1 %tmp3, label %if1, label %endif
    279 
    280 if1:                                              ; preds = %if0
    281   %tmp4 = add i32 %tmp2, 1
    282   br label %endif
    283 
    284 endif:                                            ; preds = %if1, %if0, %entry
    285   %tmp5 = phi i32 [ 0, %entry ], [ %tmp2, %if0 ], [ %tmp4, %if1 ]
    286   %tmp6 = bitcast i32 %tmp5 to float
    287   store float %tmp6, float addrspace(1)* %out
    288   ret void
    289 }
    290 
    291 ; This test is just checking that we don't crash / assertion fail.
    292 ; CHECK-LABEL: {{^}}copy2:
    293 ; CHECK: s_endpgm
    294 define amdgpu_ps void @copy2([17 x <16 x i8>] addrspace(2)* byval %arg, [32 x <16 x i8>] addrspace(2)* byval %arg1, [16 x <8 x i32>] addrspace(2)* byval %arg2, float inreg %arg3, i32 inreg %arg4, <2 x i32> %arg5, <2 x i32> %arg6, <2 x i32> %arg7, <3 x i32> %arg8, <2 x i32> %arg9, <2 x i32> %arg10, <2 x i32> %arg11, float %arg12, float %arg13, float %arg14, float %arg15, float %arg16, float %arg17, float %arg18, float %arg19, float %arg20) #0 {
    295 entry:
    296   br label %LOOP68
    297 
    298 LOOP68:                                           ; preds = %ENDIF69, %entry
    299   %temp4.7 = phi float [ 0.000000e+00, %entry ], [ %v, %ENDIF69 ]
    300   %t = phi i32 [ 20, %entry ], [ %x, %ENDIF69 ]
    301   %g = icmp eq i32 0, %t
    302   %l = bitcast float %temp4.7 to i32
    303   br i1 %g, label %IF70, label %ENDIF69
    304 
    305 IF70:                                             ; preds = %LOOP68
    306   %q = icmp ne i32 %l, 13
    307   %temp.8 = select i1 %q, float 1.000000e+00, float 0.000000e+00
    308   call void @llvm.SI.export(i32 15, i32 1, i32 1, i32 0, i32 0, float %temp.8, float 0.000000e+00, float 0.000000e+00, float 1.000000e+00)
    309   ret void
    310 
    311 ENDIF69:                                          ; preds = %LOOP68
    312   %u = add i32 %l, %t
    313   %v = bitcast i32 %u to float
    314   %x = add i32 %t, -1
    315   br label %LOOP68
    316 }
    317 
    318 ; This test checks that image_sample resource descriptors aren't loaded into
    319 ; vgprs.  The verifier will fail if this happens.
    320 ; CHECK-LABEL:{{^}}sample_rsrc:
    321 ; CHECK: image_sample
    322 ; CHECK: image_sample
    323 ; CHECK: s_endpgm
    324 define amdgpu_ps void @sample_rsrc([6 x <16 x i8>] addrspace(2)* byval %arg, [17 x <16 x i8>] addrspace(2)* byval %arg1, [16 x <4 x i32>] addrspace(2)* byval %arg2, [32 x <8 x i32>] addrspace(2)* byval %arg3, float inreg %arg4, i32 inreg %arg5, <2 x i32> %arg6, <2 x i32> %arg7, <2 x i32> %arg8, <3 x i32> %arg9, <2 x i32> %arg10, <2 x i32> %arg11, <2 x i32> %arg12, float %arg13, float %arg14, float %arg15, float %arg16, float %arg17, float %arg18, i32 %arg19, float %arg20, float %arg21) #0 {
    325 bb:
    326   %tmp = getelementptr [17 x <16 x i8>], [17 x <16 x i8>] addrspace(2)* %arg1, i32 0, i32 0
    327   %tmp22 = load <16 x i8>, <16 x i8> addrspace(2)* %tmp, !tbaa !2
    328   %tmp23 = call float @llvm.SI.load.const(<16 x i8> %tmp22, i32 16)
    329   %tmp25 = getelementptr [32 x <8 x i32>], [32 x <8 x i32>] addrspace(2)* %arg3, i32 0, i32 0
    330   %tmp26 = load <8 x i32>, <8 x i32> addrspace(2)* %tmp25, !tbaa !2
    331   %tmp27 = getelementptr [16 x <4 x i32>], [16 x <4 x i32>] addrspace(2)* %arg2, i32 0, i32 0
    332   %tmp28 = load <4 x i32>, <4 x i32> addrspace(2)* %tmp27, !tbaa !2
    333   %tmp29 = call float @llvm.SI.fs.interp(i32 0, i32 0, i32 %arg5, <2 x i32> %arg7)
    334   %tmp30 = call float @llvm.SI.fs.interp(i32 1, i32 0, i32 %arg5, <2 x i32> %arg7)
    335   %tmp31 = bitcast float %tmp23 to i32
    336   %tmp36 = icmp ne i32 %tmp31, 0
    337   br i1 %tmp36, label %bb38, label %bb80
    338 
    339 bb38:                                             ; preds = %bb
    340   %tmp52 = bitcast float %tmp29 to i32
    341   %tmp53 = bitcast float %tmp30 to i32
    342   %tmp54 = insertelement <2 x i32> undef, i32 %tmp52, i32 0
    343   %tmp55 = insertelement <2 x i32> %tmp54, i32 %tmp53, i32 1
    344   %tmp56 = bitcast <8 x i32> %tmp26 to <8 x i32>
    345   %tmp58 = call <4 x float> @llvm.SI.image.sample.v2i32(<2 x i32> %tmp55, <8 x i32> %tmp56, <4 x i32> %tmp28, i32 15, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0)
    346   br label %bb71
    347 
    348 bb80:                                             ; preds = %bb
    349   %tmp81 = bitcast float %tmp29 to i32
    350   %tmp82 = bitcast float %tmp30 to i32
    351   %tmp82.2 = add i32 %tmp82, 1
    352   %tmp83 = insertelement <2 x i32> undef, i32 %tmp81, i32 0
    353   %tmp84 = insertelement <2 x i32> %tmp83, i32 %tmp82.2, i32 1
    354   %tmp85 = bitcast <8 x i32> %tmp26 to <8 x i32>
    355   %tmp87 = call <4 x float> @llvm.SI.image.sample.v2i32(<2 x i32> %tmp84, <8 x i32> %tmp85, <4 x i32> %tmp28, i32 15, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0)
    356   br label %bb71
    357 
    358 bb71:                                             ; preds = %bb80, %bb38
    359   %tmp72 = phi <4 x float> [ %tmp58, %bb38 ], [ %tmp87, %bb80 ]
    360   %tmp88 = extractelement <4 x float> %tmp72, i32 0
    361   call void @llvm.SI.export(i32 15, i32 1, i32 1, i32 0, i32 1, float %tmp88, float %tmp88, float %tmp88, float %tmp88)
    362   ret void
    363 }
    364 
    365 ; Check the the resource descriptor is stored in an sgpr.
    366 ; CHECK-LABEL: {{^}}mimg_srsrc_sgpr:
    367 ; CHECK: image_sample v{{[0-9]+}}, v[{{[0-9]+:[0-9]+}}], s[{{[0-9]+:[0-9]+}}], s[{{[0-9]+:[0-9]+}}] dmask:0x1
    368 define amdgpu_ps void @mimg_srsrc_sgpr([34 x <8 x i32>] addrspace(2)* byval %arg) #0 {
    369   %tid = call i32 @llvm.amdgcn.mbcnt.lo(i32 -1, i32 0) #0
    370   %tmp7 = getelementptr [34 x <8 x i32>], [34 x <8 x i32>] addrspace(2)* %arg, i32 0, i32 %tid
    371   %tmp8 = load <8 x i32>, <8 x i32> addrspace(2)* %tmp7, align 32, !tbaa !0
    372   %tmp9 = call <4 x float> @llvm.SI.image.sample.v2i32(<2 x i32> <i32 1061158912, i32 1048576000>, <8 x i32> %tmp8, <4 x i32> undef, i32 15, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0)
    373   %tmp10 = extractelement <4 x float> %tmp9, i32 0
    374   %tmp12 = call i32 @llvm.SI.packf16(float undef, float %tmp10)
    375   %tmp13 = bitcast i32 %tmp12 to float
    376   call void @llvm.SI.export(i32 15, i32 1, i32 1, i32 0, i32 1, float %tmp13, float undef, float undef, float undef)
    377   ret void
    378 }
    379 
    380 ; Check the the sampler is stored in an sgpr.
    381 ; CHECK-LABEL: {{^}}mimg_ssamp_sgpr:
    382 ; CHECK: image_sample v{{[0-9]+}}, v[{{[0-9]+:[0-9]+}}], s[{{[0-9]+:[0-9]+}}], s[{{[0-9]+:[0-9]+}}] dmask:0x1
    383 define amdgpu_ps void @mimg_ssamp_sgpr([17 x <4 x i32>] addrspace(2)* byval %arg) #0 {
    384   %tid = call i32 @llvm.amdgcn.mbcnt.lo(i32 -1, i32 0) #0
    385   %tmp7 = getelementptr [17 x <4 x i32>], [17 x <4 x i32>] addrspace(2)* %arg, i32 0, i32 %tid
    386   %tmp8 = load <4 x i32>, <4 x i32> addrspace(2)* %tmp7, align 16, !tbaa !0
    387   %tmp9 = call <4 x float> @llvm.SI.image.sample.v2i32(<2 x i32> <i32 1061158912, i32 1048576000>, <8 x i32> undef, <4 x i32> %tmp8, i32 15, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0)
    388   %tmp10 = extractelement <4 x float> %tmp9, i32 0
    389   %tmp12 = call i32 @llvm.SI.packf16(float %tmp10, float undef)
    390   %tmp13 = bitcast i32 %tmp12 to float
    391   call void @llvm.SI.export(i32 15, i32 1, i32 1, i32 0, i32 1, float %tmp13, float undef, float undef, float undef)
    392   ret void
    393 }
    394 
    395 declare i32 @llvm.amdgcn.mbcnt.lo(i32, i32) #1
    396 
    397 attributes #0 = { nounwind }
    398 attributes #1 = { nounwind readnone }
    399 attributes #2 = { nounwind readonly }
    400 
    401 !0 = !{!1, !1, i64 0, i32 1}
    402 !1 = !{!"const", null}
    403 !2 = !{!1, !1, i64 0}
    404