1; RUN: opt < %s -instcombine -S | FileCheck %s 2 3define i1 @test1(i16 %tmp2) { 4; CHECK-LABEL: @test1 5; CHECK-NEXT: %tmp = icmp eq i16 %tmp2, 256 6; CHECK-NEXT: ret i1 %tmp 7 %tmp10 = call i16 @llvm.bswap.i16( i16 %tmp2 ) 8 %tmp = icmp eq i16 %tmp10, 1 9 ret i1 %tmp 10} 11 12define i1 @test2(i32 %tmp) { 13; CHECK-LABEL: @test2 14; CHECK-NEXT: %tmp.upgrd.1 = icmp eq i32 %tmp, 16777216 15; CHECK-NEXT: ret i1 %tmp.upgrd.1 16 %tmp34 = tail call i32 @llvm.bswap.i32( i32 %tmp ) 17 %tmp.upgrd.1 = icmp eq i32 %tmp34, 1 18 ret i1 %tmp.upgrd.1 19} 20 21define i1 @test3(i64 %tmp) { 22; CHECK-LABEL: @test3 23; CHECK-NEXT: %tmp.upgrd.2 = icmp eq i64 %tmp, 72057594037927936 24; CHECK-NEXT: ret i1 %tmp.upgrd.2 25 %tmp34 = tail call i64 @llvm.bswap.i64( i64 %tmp ) 26 %tmp.upgrd.2 = icmp eq i64 %tmp34, 1 27 ret i1 %tmp.upgrd.2 28} 29 30; rdar://5992453 31; A & 255 32define i32 @test4(i32 %a) nounwind { 33; CHECK-LABEL: @test4 34; CHECK-NEXT: %tmp2 = and i32 %a, 255 35; CHECK-NEXT: ret i32 %tmp2 36 %tmp2 = tail call i32 @llvm.bswap.i32( i32 %a ) 37 %tmp4 = lshr i32 %tmp2, 24 38 ret i32 %tmp4 39} 40 41; A 42define i32 @test5(i32 %a) nounwind { 43; CHECK-LABEL: @test5 44; CHECK-NEXT: ret i32 %a 45 %tmp2 = tail call i32 @llvm.bswap.i32( i32 %a ) 46 %tmp4 = tail call i32 @llvm.bswap.i32( i32 %tmp2 ) 47 ret i32 %tmp4 48} 49 50; a >> 24 51define i32 @test6(i32 %a) nounwind { 52; CHECK-LABEL: @test6 53; CHECK-NEXT: %tmp2 = lshr i32 %a, 24 54; CHECK-NEXT: ret i32 %tmp2 55 %tmp2 = tail call i32 @llvm.bswap.i32( i32 %a ) 56 %tmp4 = and i32 %tmp2, 255 57 ret i32 %tmp4 58} 59 60; PR5284 61define i16 @test7(i32 %A) { 62; CHECK-LABEL: @test7 63; CHECK-NEXT: %1 = lshr i32 %A, 16 64; CHECK-NEXT: %D = trunc i32 %1 to i16 65; CHECK-NEXT: ret i16 %D 66 %B = tail call i32 @llvm.bswap.i32(i32 %A) nounwind 67 %C = trunc i32 %B to i16 68 %D = tail call i16 @llvm.bswap.i16(i16 %C) nounwind 69 ret i16 %D 70} 71 72define i16 @test8(i64 %A) { 73; CHECK-LABEL: @test8 74; CHECK-NEXT: %1 = lshr i64 %A, 48 75; CHECK-NEXT: %D = trunc i64 %1 to i16 76; CHECK-NEXT: ret i16 %D 77 %B = tail call i64 @llvm.bswap.i64(i64 %A) nounwind 78 %C = trunc i64 %B to i16 79 %D = tail call i16 @llvm.bswap.i16(i16 %C) nounwind 80 ret i16 %D 81} 82 83; Misc: Fold bswap(undef) to undef. 84define i64 @foo() { 85; CHECK-LABEL: @foo 86; CHECK-NEXT: ret i64 undef 87 %a = call i64 @llvm.bswap.i64(i64 undef) 88 ret i64 %a 89} 90 91; PR15782 92; Fold: OP( BSWAP(x), BSWAP(y) ) -> BSWAP( OP(x, y) ) 93; Fold: OP( BSWAP(x), CONSTANT ) -> BSWAP( OP(x, BSWAP(CONSTANT) ) ) 94define i16 @bs_and16i(i16 %a, i16 %b) #0 { 95; CHECK-LABEL: @bs_and16i 96; CHECK-NEXT: %1 = and i16 %a, 4391 97; CHECK-NEXT: %2 = call i16 @llvm.bswap.i16(i16 %1) 98; CHECK-NEXT: ret i16 %2 99 %1 = tail call i16 @llvm.bswap.i16(i16 %a) 100 %2 = and i16 %1, 10001 101 ret i16 %2 102} 103 104define i16 @bs_and16(i16 %a, i16 %b) #0 { 105; CHECK-LABEL: @bs_and16 106; CHECK-NEXT: %1 = and i16 %a, %b 107; CHECK-NEXT: %2 = call i16 @llvm.bswap.i16(i16 %1) 108; CHECK-NEXT: ret i16 %2 109 %tmp1 = tail call i16 @llvm.bswap.i16(i16 %a) 110 %tmp2 = tail call i16 @llvm.bswap.i16(i16 %b) 111 %tmp3 = and i16 %tmp1, %tmp2 112 ret i16 %tmp3 113} 114 115define i16 @bs_or16(i16 %a, i16 %b) #0 { 116; CHECK-LABEL: @bs_or16 117; CHECK-NEXT: %1 = or i16 %a, %b 118; CHECK-NEXT: %2 = call i16 @llvm.bswap.i16(i16 %1) 119; CHECK-NEXT: ret i16 %2 120 %tmp1 = tail call i16 @llvm.bswap.i16(i16 %a) 121 %tmp2 = tail call i16 @llvm.bswap.i16(i16 %b) 122 %tmp3 = or i16 %tmp1, %tmp2 123 ret i16 %tmp3 124} 125 126define i16 @bs_xor16(i16 %a, i16 %b) #0 { 127; CHECK-LABEL: @bs_xor16 128; CHECK-NEXT: %1 = xor i16 %a, %b 129; CHECK-NEXT: %2 = call i16 @llvm.bswap.i16(i16 %1) 130; CHECK-NEXT: ret i16 %2 131 %tmp1 = tail call i16 @llvm.bswap.i16(i16 %a) 132 %tmp2 = tail call i16 @llvm.bswap.i16(i16 %b) 133 %tmp3 = xor i16 %tmp1, %tmp2 134 ret i16 %tmp3 135} 136 137define i32 @bs_and32i(i32 %a, i32 %b) #0 { 138; CHECK-LABEL: @bs_and32i 139; CHECK-NEXT: %1 = and i32 %a, -1585053440 140; CHECK-NEXT: %2 = call i32 @llvm.bswap.i32(i32 %1) 141; CHECK-NEXT: ret i32 %2 142 %tmp1 = tail call i32 @llvm.bswap.i32(i32 %a) 143 %tmp2 = and i32 %tmp1, 100001 144 ret i32 %tmp2 145} 146 147define i32 @bs_and32(i32 %a, i32 %b) #0 { 148; CHECK-LABEL: @bs_and32 149; CHECK-NEXT: %1 = and i32 %a, %b 150; CHECK-NEXT: %2 = call i32 @llvm.bswap.i32(i32 %1) 151; CHECK-NEXT: ret i32 %2 152 %tmp1 = tail call i32 @llvm.bswap.i32(i32 %a) 153 %tmp2 = tail call i32 @llvm.bswap.i32(i32 %b) 154 %tmp3 = and i32 %tmp1, %tmp2 155 ret i32 %tmp3 156} 157 158define i32 @bs_or32(i32 %a, i32 %b) #0 { 159; CHECK-LABEL: @bs_or32 160; CHECK-NEXT: %1 = or i32 %a, %b 161; CHECK-NEXT: %2 = call i32 @llvm.bswap.i32(i32 %1) 162; CHECK-NEXT: ret i32 %2 163 %tmp1 = tail call i32 @llvm.bswap.i32(i32 %a) 164 %tmp2 = tail call i32 @llvm.bswap.i32(i32 %b) 165 %tmp3 = or i32 %tmp1, %tmp2 166 ret i32 %tmp3 167} 168 169define i32 @bs_xor32(i32 %a, i32 %b) #0 { 170; CHECK-LABEL: @bs_xor32 171; CHECK-NEXT: %1 = xor i32 %a, %b 172; CHECK-NEXT: %2 = call i32 @llvm.bswap.i32(i32 %1) 173; CHECK-NEXT: ret i32 %2 174 %tmp1 = tail call i32 @llvm.bswap.i32(i32 %a) 175 %tmp2 = tail call i32 @llvm.bswap.i32(i32 %b) 176 %tmp3 = xor i32 %tmp1, %tmp2 177 ret i32 %tmp3 178} 179 180define i64 @bs_and64i(i64 %a, i64 %b) #0 { 181; CHECK-LABEL: @bs_and64i 182; CHECK-NEXT: %1 = and i64 %a, 129085117527228416 183; CHECK-NEXT: %2 = call i64 @llvm.bswap.i64(i64 %1) 184; CHECK-NEXT: ret i64 %2 185 %tmp1 = tail call i64 @llvm.bswap.i64(i64 %a) 186 %tmp2 = and i64 %tmp1, 1000000001 187 ret i64 %tmp2 188} 189 190define i64 @bs_and64(i64 %a, i64 %b) #0 { 191; CHECK-LABEL: @bs_and64 192; CHECK-NEXT: %1 = and i64 %a, %b 193; CHECK-NEXT: %2 = call i64 @llvm.bswap.i64(i64 %1) 194; CHECK-NEXT: ret i64 %2 195 %tmp1 = tail call i64 @llvm.bswap.i64(i64 %a) 196 %tmp2 = tail call i64 @llvm.bswap.i64(i64 %b) 197 %tmp3 = and i64 %tmp1, %tmp2 198 ret i64 %tmp3 199} 200 201define i64 @bs_or64(i64 %a, i64 %b) #0 { 202; CHECK-LABEL: @bs_or64 203; CHECK-NEXT: %1 = or i64 %a, %b 204; CHECK-NEXT: %2 = call i64 @llvm.bswap.i64(i64 %1) 205; CHECK-NEXT: ret i64 %2 206 %tmp1 = tail call i64 @llvm.bswap.i64(i64 %a) 207 %tmp2 = tail call i64 @llvm.bswap.i64(i64 %b) 208 %tmp3 = or i64 %tmp1, %tmp2 209 ret i64 %tmp3 210} 211 212define i64 @bs_xor64(i64 %a, i64 %b) #0 { 213; CHECK-LABEL: @bs_xor64 214; CHECK-NEXT: %1 = xor i64 %a, %b 215; CHECK-NEXT: %2 = call i64 @llvm.bswap.i64(i64 %1) 216; CHECK-NEXT: ret i64 %2 217 %tmp1 = tail call i64 @llvm.bswap.i64(i64 %a) 218 %tmp2 = tail call i64 @llvm.bswap.i64(i64 %b) 219 %tmp3 = xor i64 %tmp1, %tmp2 220 ret i64 %tmp3 221} 222 223declare i16 @llvm.bswap.i16(i16) 224declare i32 @llvm.bswap.i32(i32) 225declare i64 @llvm.bswap.i64(i64) 226