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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt < %s -passes=instcombine -S | FileCheck %s3 4target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"5target triple = "x86_64-apple-darwin10.0.0"6 7; Bitcasts between vectors and scalars are valid.8; PR44879define i32 @test1(i64 %a) {10; CHECK-LABEL: @test1(11; CHECK-NEXT: ret i32 012;13 %t1 = bitcast i64 %a to <2 x i32>14 %t2 = bitcast i64 %a to <2 x i32>15 %t3 = xor <2 x i32> %t1, %t216 %t4 = extractelement <2 x i32> %t3, i32 017 ret i32 %t418}19 20; Perform the bitwise logic in the source type of the operands to eliminate bitcasts.21 22define <2 x i32> @xor_two_vector_bitcasts(<1 x i64> %a, <1 x i64> %b) {23; CHECK-LABEL: @xor_two_vector_bitcasts(24; CHECK-NEXT: [[T31:%.*]] = xor <1 x i64> [[A:%.*]], [[B:%.*]]25; CHECK-NEXT: [[T3:%.*]] = bitcast <1 x i64> [[T31]] to <2 x i32>26; CHECK-NEXT: ret <2 x i32> [[T3]]27;28 %t1 = bitcast <1 x i64> %a to <2 x i32>29 %t2 = bitcast <1 x i64> %b to <2 x i32>30 %t3 = xor <2 x i32> %t1, %t231 ret <2 x i32> %t332}33 34; No change. Bitcasts are canonicalized above bitwise logic.35 36define <2 x i32> @xor_bitcast_vec_to_vec(<1 x i64> %a) {37; CHECK-LABEL: @xor_bitcast_vec_to_vec(38; CHECK-NEXT: [[T1:%.*]] = bitcast <1 x i64> [[A:%.*]] to <2 x i32>39; CHECK-NEXT: [[T2:%.*]] = xor <2 x i32> [[T1]], <i32 1, i32 2>40; CHECK-NEXT: ret <2 x i32> [[T2]]41;42 %t1 = bitcast <1 x i64> %a to <2 x i32>43 %t2 = xor <2 x i32> <i32 1, i32 2>, %t144 ret <2 x i32> %t245}46 47; No change. Bitcasts are canonicalized above bitwise logic.48 49define i64 @and_bitcast_vec_to_int(<2 x i32> %a) {50; CHECK-LABEL: @and_bitcast_vec_to_int(51; CHECK-NEXT: [[T1:%.*]] = bitcast <2 x i32> [[A:%.*]] to i6452; CHECK-NEXT: [[T2:%.*]] = and i64 [[T1]], 353; CHECK-NEXT: ret i64 [[T2]]54;55 %t1 = bitcast <2 x i32> %a to i6456 %t2 = and i64 %t1, 357 ret i64 %t258}59 60; No change. Bitcasts are canonicalized above bitwise logic.61 62define <2 x i32> @or_bitcast_int_to_vec(i64 %a) {63; CHECK-LABEL: @or_bitcast_int_to_vec(64; CHECK-NEXT: [[T1:%.*]] = bitcast i64 [[A:%.*]] to <2 x i32>65; CHECK-NEXT: [[T2:%.*]] = or <2 x i32> [[T1]], <i32 1, i32 2>66; CHECK-NEXT: ret <2 x i32> [[T2]]67;68 %t1 = bitcast i64 %a to <2 x i32>69 %t2 = or <2 x i32> %t1, <i32 1, i32 2>70 ret <2 x i32> %t271}72 73; PR26702 - https://bugs.llvm.org//show_bug.cgi?id=2670274; Bitcast is canonicalized above logic, so we can see the not-not pattern.75 76define <2 x i64> @is_negative(<4 x i32> %x) {77; CHECK-LABEL: @is_negative(78; CHECK-NEXT: [[X_LOBIT:%.*]] = ashr <4 x i32> [[X:%.*]], splat (i32 31)79; CHECK-NEXT: [[NOTNOT:%.*]] = bitcast <4 x i32> [[X_LOBIT]] to <2 x i64>80; CHECK-NEXT: ret <2 x i64> [[NOTNOT]]81;82 %lobit = ashr <4 x i32> %x, <i32 31, i32 31, i32 31, i32 31>83 %not = xor <4 x i32> %lobit, <i32 -1, i32 -1, i32 -1, i32 -1>84 %bc = bitcast <4 x i32> %not to <2 x i64>85 %notnot = xor <2 x i64> %bc, <i64 -1, i64 -1>86 ret <2 x i64> %notnot87}88 89; This variation has an extra bitcast at the end. This means that the 2nd xor90; can be done in <4 x i32> to eliminate a bitcast regardless of canonicalizaion.91 92define <4 x i32> @is_negative_bonus_bitcast(<4 x i32> %x) {93; CHECK-LABEL: @is_negative_bonus_bitcast(94; CHECK-NEXT: [[X_LOBIT:%.*]] = ashr <4 x i32> [[X:%.*]], splat (i32 31)95; CHECK-NEXT: ret <4 x i32> [[X_LOBIT]]96;97 %lobit = ashr <4 x i32> %x, <i32 31, i32 31, i32 31, i32 31>98 %not = xor <4 x i32> %lobit, <i32 -1, i32 -1, i32 -1, i32 -1>99 %bc = bitcast <4 x i32> %not to <2 x i64>100 %notnot = xor <2 x i64> %bc, <i64 -1, i64 -1>101 %bc2 = bitcast <2 x i64> %notnot to <4 x i32>102 ret <4 x i32> %bc2103}104 105; Bitcasts are canonicalized above bitwise logic.106 107define <2 x i8> @canonicalize_bitcast_logic_with_constant(<4 x i4> %x) {108; CHECK-LABEL: @canonicalize_bitcast_logic_with_constant(109; CHECK-NEXT: [[TMP1:%.*]] = bitcast <4 x i4> [[X:%.*]] to <2 x i8>110; CHECK-NEXT: [[B:%.*]] = and <2 x i8> [[TMP1]], splat (i8 -128)111; CHECK-NEXT: ret <2 x i8> [[B]]112;113 %a = and <4 x i4> %x, <i4 0, i4 8, i4 0, i4 8>114 %b = bitcast <4 x i4> %a to <2 x i8>115 ret <2 x i8> %b116}117 118; PR27925 - https://llvm.org/bugs/show_bug.cgi?id=27925119 120define <4 x i32> @bitcasts_and_bitcast(<4 x i32> %a, <8 x i16> %b) {121; CHECK-LABEL: @bitcasts_and_bitcast(122; CHECK-NEXT: [[TMP1:%.*]] = bitcast <8 x i16> [[B:%.*]] to <4 x i32>123; CHECK-NEXT: [[BC3:%.*]] = and <4 x i32> [[A:%.*]], [[TMP1]]124; CHECK-NEXT: ret <4 x i32> [[BC3]]125;126 %bc1 = bitcast <4 x i32> %a to <2 x i64>127 %bc2 = bitcast <8 x i16> %b to <2 x i64>128 %and = and <2 x i64> %bc2, %bc1129 %bc3 = bitcast <2 x i64> %and to <4 x i32>130 ret <4 x i32> %bc3131}132 133define <4 x float> @bitcasts_and_bitcast_to_fp(<4 x float> %a, <8 x i16> %b) {134; CHECK-LABEL: @bitcasts_and_bitcast_to_fp(135; CHECK-NEXT: [[TMP1:%.*]] = bitcast <4 x float> [[A:%.*]] to <8 x i16>136; CHECK-NEXT: [[TMP2:%.*]] = and <8 x i16> [[B:%.*]], [[TMP1]]137; CHECK-NEXT: [[BC3:%.*]] = bitcast <8 x i16> [[TMP2]] to <4 x float>138; CHECK-NEXT: ret <4 x float> [[BC3]]139;140 %bc1 = bitcast <4 x float> %a to <2 x i64>141 %bc2 = bitcast <8 x i16> %b to <2 x i64>142 %and = and <2 x i64> %bc2, %bc1143 %bc3 = bitcast <2 x i64> %and to <4 x float>144 ret <4 x float> %bc3145}146 147; FIXME: Transform limited from changing vector op to integer op to avoid codegen problems.148 149define i128 @bitcast_or_bitcast(i128 %a, <2 x i64> %b) {150; CHECK-LABEL: @bitcast_or_bitcast(151; CHECK-NEXT: [[BC1:%.*]] = bitcast i128 [[A:%.*]] to <2 x i64>152; CHECK-NEXT: [[OR:%.*]] = or <2 x i64> [[B:%.*]], [[BC1]]153; CHECK-NEXT: [[BC2:%.*]] = bitcast <2 x i64> [[OR]] to i128154; CHECK-NEXT: ret i128 [[BC2]]155;156 %bc1 = bitcast i128 %a to <2 x i64>157 %or = or <2 x i64> %b, %bc1158 %bc2 = bitcast <2 x i64> %or to i128159 ret i128 %bc2160}161 162; FIXME: Transform limited from changing integer op to vector op to avoid codegen problems.163 164define <4 x i32> @bitcast_xor_bitcast(<4 x i32> %a, i128 %b) {165; CHECK-LABEL: @bitcast_xor_bitcast(166; CHECK-NEXT: [[BC1:%.*]] = bitcast <4 x i32> [[A:%.*]] to i128167; CHECK-NEXT: [[XOR:%.*]] = xor i128 [[B:%.*]], [[BC1]]168; CHECK-NEXT: [[BC2:%.*]] = bitcast i128 [[XOR]] to <4 x i32>169; CHECK-NEXT: ret <4 x i32> [[BC2]]170;171 %bc1 = bitcast <4 x i32> %a to i128172 %xor = xor i128 %bc1, %b173 %bc2 = bitcast i128 %xor to <4 x i32>174 ret <4 x i32> %bc2175}176 177; https://llvm.org/bugs/show_bug.cgi?id=6137#c6178 179define <4 x float> @bitcast_vector_select(<4 x float> %x, <2 x i64> %y, <4 x i1> %cmp) {180; CHECK-LABEL: @bitcast_vector_select(181; CHECK-NEXT: [[TMP1:%.*]] = bitcast <2 x i64> [[Y:%.*]] to <4 x float>182; CHECK-NEXT: [[T7:%.*]] = select <4 x i1> [[CMP:%.*]], <4 x float> [[X:%.*]], <4 x float> [[TMP1]]183; CHECK-NEXT: ret <4 x float> [[T7]]184;185 %t4 = bitcast <4 x float> %x to <4 x i32>186 %t5 = bitcast <2 x i64> %y to <4 x i32>187 %t6 = select <4 x i1> %cmp, <4 x i32> %t4, <4 x i32> %t5188 %t7 = bitcast <4 x i32> %t6 to <4 x float>189 ret <4 x float> %t7190}191 192define float @bitcast_scalar_select_of_scalars(float %x, i32 %y, i1 %cmp) {193; CHECK-LABEL: @bitcast_scalar_select_of_scalars(194; CHECK-NEXT: [[TMP1:%.*]] = bitcast i32 [[Y:%.*]] to float195; CHECK-NEXT: [[T7:%.*]] = select i1 [[CMP:%.*]], float [[X:%.*]], float [[TMP1]]196; CHECK-NEXT: ret float [[T7]]197;198 %t4 = bitcast float %x to i32199 %t6 = select i1 %cmp, i32 %t4, i32 %y200 %t7 = bitcast i32 %t6 to float201 ret float %t7202}203 204; FIXME: We should change the select operand types to scalars, but we need to make205; sure the backend can reverse that transform if needed.206 207define float @bitcast_scalar_select_type_mismatch1(float %x, <4 x i8> %y, i1 %cmp) {208; CHECK-LABEL: @bitcast_scalar_select_type_mismatch1(209; CHECK-NEXT: [[T4:%.*]] = bitcast float [[X:%.*]] to <4 x i8>210; CHECK-NEXT: [[T6:%.*]] = select i1 [[CMP:%.*]], <4 x i8> [[T4]], <4 x i8> [[Y:%.*]]211; CHECK-NEXT: [[T7:%.*]] = bitcast <4 x i8> [[T6]] to float212; CHECK-NEXT: ret float [[T7]]213;214 %t4 = bitcast float %x to <4 x i8>215 %t6 = select i1 %cmp, <4 x i8> %t4, <4 x i8> %y216 %t7 = bitcast <4 x i8> %t6 to float217 ret float %t7218}219 220; FIXME: We should change the select operand types to vectors, but we need to make221; sure the backend can reverse that transform if needed.222 223define <4 x i8> @bitcast_scalar_select_type_mismatch2(<4 x i8> %x, float %y, i1 %cmp) {224; CHECK-LABEL: @bitcast_scalar_select_type_mismatch2(225; CHECK-NEXT: [[T4:%.*]] = bitcast <4 x i8> [[X:%.*]] to float226; CHECK-NEXT: [[T6:%.*]] = select i1 [[CMP:%.*]], float [[T4]], float [[Y:%.*]]227; CHECK-NEXT: [[T7:%.*]] = bitcast float [[T6]] to <4 x i8>228; CHECK-NEXT: ret <4 x i8> [[T7]]229;230 %t4 = bitcast <4 x i8> %x to float231 %t6 = select i1 %cmp, float %t4, float %y232 %t7 = bitcast float %t6 to <4 x i8>233 ret <4 x i8> %t7234}235 236define <4 x float> @bitcast_scalar_select_of_vectors(<4 x float> %x, <2 x i64> %y, i1 %cmp) {237; CHECK-LABEL: @bitcast_scalar_select_of_vectors(238; CHECK-NEXT: [[TMP1:%.*]] = bitcast <2 x i64> [[Y:%.*]] to <4 x float>239; CHECK-NEXT: [[T7:%.*]] = select i1 [[CMP:%.*]], <4 x float> [[X:%.*]], <4 x float> [[TMP1]]240; CHECK-NEXT: ret <4 x float> [[T7]]241;242 %t4 = bitcast <4 x float> %x to <4 x i32>243 %t5 = bitcast <2 x i64> %y to <4 x i32>244 %t6 = select i1 %cmp, <4 x i32> %t4, <4 x i32> %t5245 %t7 = bitcast <4 x i32> %t6 to <4 x float>246 ret <4 x float> %t7247}248 249; Can't change the type of the vector select if the dest type is scalar.250 251define float @bitcast_vector_select_no_fold1(float %x, <2 x i16> %y, <4 x i1> %cmp) {252; CHECK-LABEL: @bitcast_vector_select_no_fold1(253; CHECK-NEXT: [[T4:%.*]] = bitcast float [[X:%.*]] to <4 x i8>254; CHECK-NEXT: [[T5:%.*]] = bitcast <2 x i16> [[Y:%.*]] to <4 x i8>255; CHECK-NEXT: [[T6:%.*]] = select <4 x i1> [[CMP:%.*]], <4 x i8> [[T4]], <4 x i8> [[T5]]256; CHECK-NEXT: [[T7:%.*]] = bitcast <4 x i8> [[T6]] to float257; CHECK-NEXT: ret float [[T7]]258;259 %t4 = bitcast float %x to <4 x i8>260 %t5 = bitcast <2 x i16> %y to <4 x i8>261 %t6 = select <4 x i1> %cmp, <4 x i8> %t4, <4 x i8> %t5262 %t7 = bitcast <4 x i8> %t6 to float263 ret float %t7264}265 266; Can't change the type of the vector select if the number of elements in the dest type is not the same.267 268define <2 x float> @bitcast_vector_select_no_fold2(<2 x float> %x, <4 x i16> %y, <8 x i1> %cmp) {269; CHECK-LABEL: @bitcast_vector_select_no_fold2(270; CHECK-NEXT: [[T4:%.*]] = bitcast <2 x float> [[X:%.*]] to <8 x i8>271; CHECK-NEXT: [[T5:%.*]] = bitcast <4 x i16> [[Y:%.*]] to <8 x i8>272; CHECK-NEXT: [[T6:%.*]] = select <8 x i1> [[CMP:%.*]], <8 x i8> [[T4]], <8 x i8> [[T5]]273; CHECK-NEXT: [[T7:%.*]] = bitcast <8 x i8> [[T6]] to <2 x float>274; CHECK-NEXT: ret <2 x float> [[T7]]275;276 %t4 = bitcast <2 x float> %x to <8 x i8>277 %t5 = bitcast <4 x i16> %y to <8 x i8>278 %t6 = select <8 x i1> %cmp, <8 x i8> %t4, <8 x i8> %t5279 %t7 = bitcast <8 x i8> %t6 to <2 x float>280 ret <2 x float> %t7281}282 283; Optimize bitcasts that are extracting low element of vector. This happens because of SRoA.284; rdar://7892780285define float @test2(<2 x float> %A, <2 x i32> %B) {286; CHECK-LABEL: @test2(287; CHECK-NEXT: [[T24:%.*]] = extractelement <2 x float> [[A:%.*]], i64 0288; CHECK-NEXT: [[BC:%.*]] = bitcast <2 x i32> [[B:%.*]] to <2 x float>289; CHECK-NEXT: [[T4:%.*]] = extractelement <2 x float> [[BC]], i64 0290; CHECK-NEXT: [[ADD:%.*]] = fadd float [[T24]], [[T4]]291; CHECK-NEXT: ret float [[ADD]]292;293 %t28 = bitcast <2 x float> %A to i64 ; <i64> [#uses=2]294 %t23 = trunc i64 %t28 to i32 ; <i32> [#uses=1]295 %t24 = bitcast i32 %t23 to float ; <float> [#uses=1]296 297 %t = bitcast <2 x i32> %B to i64298 %t2 = trunc i64 %t to i32 ; <i32> [#uses=1]299 %t4 = bitcast i32 %t2 to float ; <float> [#uses=1]300 301 %add = fadd float %t24, %t4302 ret float %add303}304 305; Optimize bitcasts that are extracting other elements of a vector. This happens because of SRoA.306; rdar://7892780307define float @test3(<2 x float> %A, <2 x i64> %B) {308; CHECK-LABEL: @test3(309; CHECK-NEXT: [[T24:%.*]] = extractelement <2 x float> [[A:%.*]], i64 1310; CHECK-NEXT: [[BC2:%.*]] = bitcast <2 x i64> [[B:%.*]] to <4 x float>311; CHECK-NEXT: [[T4:%.*]] = extractelement <4 x float> [[BC2]], i64 2312; CHECK-NEXT: [[ADD:%.*]] = fadd float [[T24]], [[T4]]313; CHECK-NEXT: ret float [[ADD]]314;315 %t28 = bitcast <2 x float> %A to i64316 %t29 = lshr i64 %t28, 32317 %t23 = trunc i64 %t29 to i32318 %t24 = bitcast i32 %t23 to float319 320 %t = bitcast <2 x i64> %B to i128321 %t1 = lshr i128 %t, 64322 %t2 = trunc i128 %t1 to i32323 %t4 = bitcast i32 %t2 to float324 325 %add = fadd float %t24, %t4326 ret float %add327}328 329; Both bitcasts are unnecessary; change the extractelement.330 331define float @bitcast_extelt1(<2 x float> %A) {332; CHECK-LABEL: @bitcast_extelt1(333; CHECK-NEXT: [[BC2:%.*]] = extractelement <2 x float> [[A:%.*]], i64 0334; CHECK-NEXT: ret float [[BC2]]335;336 %bc1 = bitcast <2 x float> %A to <2 x i32>337 %ext = extractelement <2 x i32> %bc1, i32 0338 %bc2 = bitcast i32 %ext to float339 ret float %bc2340}341 342; Second bitcast can be folded into the first.343 344define i64 @bitcast_extelt2(<4 x float> %A) {345; CHECK-LABEL: @bitcast_extelt2(346; CHECK-NEXT: [[BC:%.*]] = bitcast <4 x float> [[A:%.*]] to <2 x i64>347; CHECK-NEXT: [[BC2:%.*]] = extractelement <2 x i64> [[BC]], i64 1348; CHECK-NEXT: ret i64 [[BC2]]349;350 %bc1 = bitcast <4 x float> %A to <2 x double>351 %ext = extractelement <2 x double> %bc1, i32 1352 %bc2 = bitcast double %ext to i64353 ret i64 %bc2354}355 356define <2 x i32> @bitcast_extelt3(<2 x i32> %A) {357; CHECK-LABEL: @bitcast_extelt3(358; CHECK-NEXT: ret <2 x i32> [[A:%.*]]359;360 %bc1 = bitcast <2 x i32> %A to <1 x i64>361 %ext = extractelement <1 x i64> %bc1, i32 0362 %bc2 = bitcast i64 %ext to <2 x i32>363 ret <2 x i32> %bc2364}365 366; Handle the case where the input is not a vector.367 368define double @bitcast_extelt4(i128 %A) {369; CHECK-LABEL: @bitcast_extelt4(370; CHECK-NEXT: [[EXT:%.*]] = trunc i128 [[A:%.*]] to i64371; CHECK-NEXT: [[BC2:%.*]] = bitcast i64 [[EXT]] to double372; CHECK-NEXT: ret double [[BC2]]373;374 %bc1 = bitcast i128 %A to <2 x i64>375 %ext = extractelement <2 x i64> %bc1, i32 0376 %bc2 = bitcast i64 %ext to double377 ret double %bc2378}379 380define <2 x i32> @test4(i32 %A, i32 %B){381; CHECK-LABEL: @test4(382; CHECK-NEXT: [[TMP1:%.*]] = insertelement <2 x i32> poison, i32 [[A:%.*]], i64 0383; CHECK-NEXT: [[T43:%.*]] = insertelement <2 x i32> [[TMP1]], i32 [[B:%.*]], i64 1384; CHECK-NEXT: ret <2 x i32> [[T43]]385;386 %t38 = zext i32 %A to i64387 %t32 = zext i32 %B to i64388 %t33 = shl i64 %t32, 32389 %ins35 = or i64 %t33, %t38390 %t43 = bitcast i64 %ins35 to <2 x i32>391 ret <2 x i32> %t43392}393 394; rdar://8360454395define <2 x float> @test5(float %A, float %B) {396; CHECK-LABEL: @test5(397; CHECK-NEXT: [[TMP1:%.*]] = insertelement <2 x float> poison, float [[A:%.*]], i64 0398; CHECK-NEXT: [[T43:%.*]] = insertelement <2 x float> [[TMP1]], float [[B:%.*]], i64 1399; CHECK-NEXT: ret <2 x float> [[T43]]400;401 %t37 = bitcast float %A to i32402 %t38 = zext i32 %t37 to i64403 %t31 = bitcast float %B to i32404 %t32 = zext i32 %t31 to i64405 %t33 = shl i64 %t32, 32406 %ins35 = or i64 %t33, %t38407 %t43 = bitcast i64 %ins35 to <2 x float>408 ret <2 x float> %t43409}410 411define <2 x float> @test6(float %A){412; CHECK-LABEL: @test6(413; CHECK-NEXT: [[T35:%.*]] = insertelement <2 x float> <float 4.200000e+01, float poison>, float [[A:%.*]], i64 1414; CHECK-NEXT: ret <2 x float> [[T35]]415;416 %t23 = bitcast float %A to i32417 %t24 = zext i32 %t23 to i64418 %t25 = shl i64 %t24, 32419 %mask20 = or i64 %t25, 1109917696420 %t35 = bitcast i64 %mask20 to <2 x float>421 ret <2 x float> %t35422}423 424define i64 @ISPC0(i64 %in) {425; CHECK-LABEL: @ISPC0(426; CHECK-NEXT: ret i64 0427;428 %out = and i64 %in, xor (i64 bitcast (<4 x i16> <i16 -1, i16 -1, i16 -1, i16 -1> to i64), i64 -1)429 ret i64 %out430}431 432 433define i64 @Vec2(i64 %in) {434; CHECK-LABEL: @Vec2(435; CHECK-NEXT: ret i64 0436;437 %out = and i64 %in, xor (i64 bitcast (<4 x i16> <i16 0, i16 0, i16 0, i16 0> to i64), i64 0)438 ret i64 %out439}440 441define i64 @All11(i64 %in) {442; CHECK-LABEL: @All11(443; CHECK-NEXT: ret i64 0444;445 %out = and i64 %in, xor (i64 bitcast (<2 x float> bitcast (i64 -1 to <2 x float>) to i64), i64 -1)446 ret i64 %out447}448 449 450define i32 @All111(i32 %in) {451; CHECK-LABEL: @All111(452; CHECK-NEXT: ret i32 0453;454 %out = and i32 %in, xor (i32 bitcast (<1 x float> bitcast (i32 -1 to <1 x float>) to i32), i32 -1)455 ret i32 %out456}457 458define <2 x i16> @BitcastInsert(i32 %a) {459; CHECK-LABEL: @BitcastInsert(460; CHECK-NEXT: [[R:%.*]] = bitcast i32 [[A:%.*]] to <2 x i16>461; CHECK-NEXT: ret <2 x i16> [[R]]462;463 %v = insertelement <1 x i32> poison, i32 %a, i32 0464 %r = bitcast <1 x i32> %v to <2 x i16>465 ret <2 x i16> %r466}467 468; PR17293469define <2 x i64> @test7(ptr %arg) nounwind {470; CHECK-LABEL: @test7(471; CHECK-NEXT: [[LOAD:%.*]] = load <2 x i64>, ptr [[ARG:%.*]], align 16472; CHECK-NEXT: ret <2 x i64> [[LOAD]]473;474 %load = load <2 x i64>, ptr %arg, align 16475 ret <2 x i64> %load476}477 478define i8 @test8() {479; CHECK-LABEL: @test8(480; CHECK-NEXT: ret i8 -85481;482 %res = bitcast <8 x i1> <i1 true, i1 true, i1 false, i1 true, i1 false, i1 true, i1 false, i1 true> to i8483 ret i8 %res484}485 486@g = internal unnamed_addr global i32 undef487 488define void @constant_fold_vector_to_double() {489; CHECK-LABEL: @constant_fold_vector_to_double(490; CHECK-NEXT: store volatile double 1.000000e+00, ptr undef, align 8491; CHECK-NEXT: store volatile double 1.000000e+00, ptr undef, align 8492; CHECK-NEXT: store volatile double 1.000000e+00, ptr undef, align 8493; CHECK-NEXT: store volatile double 1.000000e+00, ptr undef, align 8494; CHECK-NEXT: store volatile double 0xFFFFFFFFFFFFFFFF, ptr undef, align 8495; CHECK-NEXT: store volatile double 0x162E000004D2, ptr undef, align 8496; CHECK-NEXT: store volatile double bitcast (<2 x i32> <i32 1234, i32 ptrtoint (ptr @g to i32)> to double), ptr undef, align 8497; CHECK-NEXT: store volatile double 0x400000003F800000, ptr undef, align 8498; CHECK-NEXT: store volatile double 0.000000e+00, ptr undef, align 8499; CHECK-NEXT: store volatile double 0.000000e+00, ptr undef, align 8500; CHECK-NEXT: store volatile double 0.000000e+00, ptr undef, align 8501; CHECK-NEXT: store volatile double 0.000000e+00, ptr undef, align 8502; CHECK-NEXT: store volatile double 0.000000e+00, ptr undef, align 8503; CHECK-NEXT: store volatile double 0.000000e+00, ptr undef, align 8504; CHECK-NEXT: ret void505;506 store volatile double bitcast (<1 x i64> <i64 4607182418800017408> to double), ptr undef507 store volatile double bitcast (<2 x i32> <i32 0, i32 1072693248> to double), ptr undef508 store volatile double bitcast (<4 x i16> <i16 0, i16 0, i16 0, i16 16368> to double), ptr undef509 store volatile double bitcast (<8 x i8> <i8 0, i8 0, i8 0, i8 0, i8 0, i8 0, i8 240, i8 63> to double), ptr undef510 511 store volatile double bitcast (<2 x i32> <i32 -1, i32 -1> to double), ptr undef512 store volatile double bitcast (<2 x i32> <i32 1234, i32 5678> to double), ptr undef513 514 store volatile double bitcast (<2 x i32> <i32 1234, i32 ptrtoint (ptr @g to i32)> to double), ptr undef515 store volatile double bitcast (<2 x float> <float 1.0, float 2.0> to double), ptr undef516 517 store volatile double bitcast (<2 x i32> zeroinitializer to double), ptr undef518 store volatile double bitcast (<4 x i16> zeroinitializer to double), ptr undef519 store volatile double bitcast (<8 x i8> zeroinitializer to double), ptr undef520 store volatile double bitcast (<16 x i4> zeroinitializer to double), ptr undef521 store volatile double bitcast (<32 x i2> zeroinitializer to double), ptr undef522 store volatile double bitcast (<64 x i1> zeroinitializer to double), ptr undef523 ret void524}525 526define void @constant_fold_vector_to_float() {527; CHECK-LABEL: @constant_fold_vector_to_float(528; CHECK-NEXT: store volatile float 1.000000e+00, ptr undef, align 4529; CHECK-NEXT: store volatile float 1.000000e+00, ptr undef, align 4530; CHECK-NEXT: store volatile float 1.000000e+00, ptr undef, align 4531; CHECK-NEXT: store volatile float 1.000000e+00, ptr undef, align 4532; CHECK-NEXT: ret void533;534 store volatile float bitcast (<1 x i32> <i32 1065353216> to float), ptr undef535 store volatile float bitcast (<2 x i16> <i16 0, i16 16256> to float), ptr undef536 store volatile float bitcast (<4 x i8> <i8 0, i8 0, i8 128, i8 63> to float), ptr undef537 store volatile float bitcast (<32 x i1> <i1 0, i1 0, i1 0, i1 0, i1 0, i1 0, i1 0, i1 0, i1 0, i1 0, i1 0, i1 0, i1 0, i1 0, i1 0, i1 0, i1 0, i1 0, i1 0, i1 0, i1 0, i1 0, i1 0, i1 1, i1 1, i1 1, i1 1, i1 1, i1 1, i1 1, i1 0, i1 0> to float), ptr undef538 539 ret void540}541 542define void @constant_fold_vector_to_half() {543; CHECK-LABEL: @constant_fold_vector_to_half(544; CHECK-NEXT: store volatile half 0xH4000, ptr undef, align 2545; CHECK-NEXT: store volatile half 0xH4000, ptr undef, align 2546; CHECK-NEXT: ret void547;548 store volatile half bitcast (<2 x i8> <i8 0, i8 64> to half), ptr undef549 store volatile half bitcast (<4 x i4> <i4 0, i4 0, i4 0, i4 4> to half), ptr undef550 ret void551}552 553; Ensure that we do not crash when looking at such a weird bitcast.554define ptr @bitcast_from_single_element_pointer_vector_to_pointer(<1 x ptr> %ptrvec) {555; CHECK-LABEL: @bitcast_from_single_element_pointer_vector_to_pointer(556; CHECK-NEXT: [[TMP1:%.*]] = extractelement <1 x ptr> [[PTRVEC:%.*]], i64 0557; CHECK-NEXT: ret ptr [[TMP1]]558;559 %ptr = bitcast <1 x ptr> %ptrvec to ptr560 ret ptr %ptr561}562