# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py # RUN: llc -mtriple=aarch64-unknown-unknown -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s --- name: add_sext_s32_to_s64 alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true machineFunctionInfo: {} body: | bb.0: liveins: $w1, $x2 ; CHECK-LABEL: name: add_sext_s32_to_s64 ; CHECK: liveins: $w1, $x2 ; CHECK: [[COPY:%[0-9]+]]:gpr32 = COPY $w1 ; CHECK: %add_lhs:gpr64sp = COPY $x2 ; CHECK: %res:gpr64sp = ADDXrx %add_lhs, [[COPY]], 48 ; CHECK: $x3 = COPY %res ; CHECK: RET_ReallyLR implicit $x3 %1:gpr(s32) = COPY $w1 %ext:gpr(s64) = G_SEXT %1(s32) %add_lhs:gpr(s64) = COPY $x2 %res:gpr(s64) = G_ADD %add_lhs, %ext $x3 = COPY %res(s64) RET_ReallyLR implicit $x3 ... --- name: add_and_s32_to_s64 alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true machineFunctionInfo: {} body: | bb.0: liveins: $x1, $x2 ; CHECK-LABEL: name: add_and_s32_to_s64 ; CHECK: liveins: $x1, $x2 ; CHECK: [[COPY:%[0-9]+]]:gpr64all = COPY $x1 ; CHECK: [[COPY1:%[0-9]+]]:gpr32all = COPY [[COPY]].sub_32 ; CHECK: [[COPY2:%[0-9]+]]:gpr32 = COPY [[COPY1]] ; CHECK: %add_lhs:gpr64sp = COPY $x2 ; CHECK: %res:gpr64sp = ADDXrx %add_lhs, [[COPY2]], 16 ; CHECK: $x3 = COPY %res ; CHECK: RET_ReallyLR implicit $x3 %1:gpr(s64) = COPY $x1 %mask:gpr(s64) = G_CONSTANT i64 4294967295 ; 0xffff %ext:gpr(s64) = G_AND %1(s64), %mask %add_lhs:gpr(s64) = COPY $x2 %res:gpr(s64) = G_ADD %add_lhs, %ext $x3 = COPY %res(s64) RET_ReallyLR implicit $x3 ... --- name: add_sext_s16_to_s32 alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true machineFunctionInfo: {} body: | bb.0: liveins: $w1, $w2, $x2 ; CHECK-LABEL: name: add_sext_s16_to_s32 ; CHECK: liveins: $w1, $w2, $x2 ; CHECK: %wide_1:gpr32 = COPY $w1 ; CHECK: %add_lhs:gpr32sp = COPY $w2 ; CHECK: %res:gpr32sp = ADDWrx %add_lhs, %wide_1, 40 ; CHECK: $w3 = COPY %res ; CHECK: RET_ReallyLR implicit $w3 %wide_1:gpr(s32) = COPY $w1 %1:gpr(s16) = G_TRUNC %wide_1 %ext:gpr(s32) = G_SEXT %1(s16) %add_lhs:gpr(s32) = COPY $w2 %res:gpr(s32) = G_ADD %add_lhs, %ext $w3 = COPY %res(s32) RET_ReallyLR implicit $w3 ... --- name: add_zext_s16_to_s32 alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true machineFunctionInfo: {} body: | bb.0: liveins: $w1, $w2, $x2 ; CHECK-LABEL: name: add_zext_s16_to_s32 ; CHECK: liveins: $w1, $w2, $x2 ; CHECK: %wide_1:gpr32 = COPY $w1 ; CHECK: %add_lhs:gpr32sp = COPY $w2 ; CHECK: %res:gpr32sp = ADDWrx %add_lhs, %wide_1, 8 ; CHECK: $w3 = COPY %res ; CHECK: RET_ReallyLR implicit $w3 %wide_1:gpr(s32) = COPY $w1 %1:gpr(s16) = G_TRUNC %wide_1 %ext:gpr(s32) = G_ZEXT %1(s16) %add_lhs:gpr(s32) = COPY $w2 %res:gpr(s32) = G_ADD %add_lhs, %ext $w3 = COPY %res(s32) RET_ReallyLR implicit $w3 ... --- name: add_anyext_s16_to_s32 alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true machineFunctionInfo: {} body: | bb.0: liveins: $w1, $w2, $x2 ; CHECK-LABEL: name: add_anyext_s16_to_s32 ; CHECK: liveins: $w1, $w2, $x2 ; CHECK: %wide_1:gpr32 = COPY $w1 ; CHECK: %add_lhs:gpr32sp = COPY $w2 ; CHECK: %res:gpr32sp = ADDWrx %add_lhs, %wide_1, 8 ; CHECK: $w3 = COPY %res ; CHECK: RET_ReallyLR implicit $w3 %wide_1:gpr(s32) = COPY $w1 %1:gpr(s16) = G_TRUNC %wide_1 %ext:gpr(s32) = G_ANYEXT %1(s16) %add_lhs:gpr(s32) = COPY $w2 %res:gpr(s32) = G_ADD %add_lhs, %ext $w3 = COPY %res(s32) RET_ReallyLR implicit $w3 ... --- name: add_and_s16_to_s32_uxtb alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true machineFunctionInfo: {} body: | bb.0: liveins: $w1, $w2, $x2 ; CHECK-LABEL: name: add_and_s16_to_s32_uxtb ; CHECK: liveins: $w1, $w2, $x2 ; CHECK: [[COPY:%[0-9]+]]:gpr32 = COPY $w1 ; CHECK: %add_lhs:gpr32sp = COPY $w2 ; CHECK: %res:gpr32sp = ADDWrx %add_lhs, [[COPY]], 0 ; CHECK: $w3 = COPY %res ; CHECK: RET_ReallyLR implicit $w3 %1:gpr(s32) = COPY $w1 %mask:gpr(s32) = G_CONSTANT i32 255 ; 0xff %ext:gpr(s32) = G_AND %1(s32), %mask %add_lhs:gpr(s32) = COPY $w2 %res:gpr(s32) = G_ADD %add_lhs, %ext $w3 = COPY %res(s32) RET_ReallyLR implicit $w3 ... --- name: add_and_s16_to_s32_uxth alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true machineFunctionInfo: {} body: | bb.0: liveins: $w1, $w2, $x2 ; CHECK-LABEL: name: add_and_s16_to_s32_uxth ; CHECK: liveins: $w1, $w2, $x2 ; CHECK: [[COPY:%[0-9]+]]:gpr32 = COPY $w1 ; CHECK: %add_lhs:gpr32sp = COPY $w2 ; CHECK: %res:gpr32sp = ADDWrx %add_lhs, [[COPY]], 8 ; CHECK: $w3 = COPY %res ; CHECK: RET_ReallyLR implicit $w3 %1:gpr(s32) = COPY $w1 %mask:gpr(s32) = G_CONSTANT i32 65535 ; 0xffff %ext:gpr(s32) = G_AND %1(s32), %mask %add_lhs:gpr(s32) = COPY $w2 %res:gpr(s32) = G_ADD %add_lhs, %ext $w3 = COPY %res(s32) RET_ReallyLR implicit $w3 ... --- name: add_sext_s8_to_s32 alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true machineFunctionInfo: {} body: | bb.0: liveins: $w1, $w2, $x2 ; CHECK-LABEL: name: add_sext_s8_to_s32 ; CHECK: liveins: $w1, $w2, $x2 ; CHECK: %wide_1:gpr32 = COPY $w1 ; CHECK: %add_lhs:gpr32sp = COPY $w2 ; CHECK: %res:gpr32sp = ADDWrx %add_lhs, %wide_1, 32 ; CHECK: $w3 = COPY %res ; CHECK: RET_ReallyLR implicit $w3 %wide_1:gpr(s32) = COPY $w1 %1:gpr(s8) = G_TRUNC %wide_1 %ext:gpr(s32) = G_SEXT %1(s8) %add_lhs:gpr(s32) = COPY $w2 %res:gpr(s32) = G_ADD %add_lhs, %ext $w3 = COPY %res(s32) RET_ReallyLR implicit $w3 ... --- name: add_zext_s8_to_s32 alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true machineFunctionInfo: {} body: | bb.0: liveins: $w1, $w2, $x2 ; CHECK-LABEL: name: add_zext_s8_to_s32 ; CHECK: liveins: $w1, $w2, $x2 ; CHECK: %wide_1:gpr32 = COPY $w1 ; CHECK: %add_lhs:gpr32sp = COPY $w2 ; CHECK: %res:gpr32sp = ADDWrx %add_lhs, %wide_1, 0 ; CHECK: $w3 = COPY %res ; CHECK: RET_ReallyLR implicit $w3 %wide_1:gpr(s32) = COPY $w1 %1:gpr(s8) = G_TRUNC %wide_1 %ext:gpr(s32) = G_ZEXT %1(s8) %add_lhs:gpr(s32) = COPY $w2 %res:gpr(s32) = G_ADD %add_lhs, %ext $w3 = COPY %res(s32) RET_ReallyLR implicit $w3 ... --- name: add_anyext_s8_to_s32 alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true machineFunctionInfo: {} body: | bb.0: liveins: $w1, $w2, $x2 ; CHECK-LABEL: name: add_anyext_s8_to_s32 ; CHECK: liveins: $w1, $w2, $x2 ; CHECK: %wide_1:gpr32 = COPY $w1 ; CHECK: %add_lhs:gpr32sp = COPY $w2 ; CHECK: %res:gpr32sp = ADDWrx %add_lhs, %wide_1, 0 ; CHECK: $w3 = COPY %res ; CHECK: RET_ReallyLR implicit $w3 %wide_1:gpr(s32) = COPY $w1 %1:gpr(s8) = G_TRUNC %wide_1 %ext:gpr(s32) = G_ANYEXT %1(s8) %add_lhs:gpr(s32) = COPY $w2 %res:gpr(s32) = G_ADD %add_lhs, %ext $w3 = COPY %res(s32) RET_ReallyLR implicit $w3 ... --- name: add_sext_with_shl alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true machineFunctionInfo: {} body: | bb.0: liveins: $w1, $w2, $x2 ; CHECK-LABEL: name: add_sext_with_shl ; CHECK: liveins: $w1, $w2, $x2 ; CHECK: %wide_1:gpr32 = COPY $w1 ; CHECK: %add_lhs:gpr32sp = COPY $w2 ; CHECK: %res:gpr32sp = ADDWrx %add_lhs, %wide_1, 43 ; CHECK: $w3 = COPY %res ; CHECK: RET_ReallyLR implicit $w3 %wide_1:gpr(s32) = COPY $w1 %1:gpr(s16) = G_TRUNC %wide_1 %ext:gpr(s32) = G_SEXT %1(s16) %imm:gpr(s32) = G_CONSTANT i32 3 %shl:gpr(s32) = G_SHL %ext, %imm %add_lhs:gpr(s32) = COPY $w2 %res:gpr(s32) = G_ADD %add_lhs, %shl $w3 = COPY %res(s32) RET_ReallyLR implicit $w3 ... --- name: add_and_with_shl alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true machineFunctionInfo: {} body: | bb.0: liveins: $w1, $w2, $x2 ; CHECK-LABEL: name: add_and_with_shl ; CHECK: liveins: $w1, $w2, $x2 ; CHECK: [[COPY:%[0-9]+]]:gpr32 = COPY $w1 ; CHECK: %add_lhs:gpr32sp = COPY $w2 ; CHECK: %res:gpr32sp = ADDWrx %add_lhs, [[COPY]], 3 ; CHECK: $w3 = COPY %res ; CHECK: RET_ReallyLR implicit $w3 %1:gpr(s32) = COPY $w1 %mask:gpr(s32) = G_CONSTANT i32 255 ; 0xff %ext:gpr(s32) = G_AND %1(s32), %mask %imm:gpr(s32) = G_CONSTANT i32 3 %shl:gpr(s32) = G_SHL %ext, %imm %add_lhs:gpr(s32) = COPY $w2 %res:gpr(s32) = G_ADD %add_lhs, %shl $w3 = COPY %res(s32) RET_ReallyLR implicit $w3 ... --- name: dont_fold_invalid_mask alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true machineFunctionInfo: {} body: | bb.0: ; Check that we only fold when we have a supported AND mask. liveins: $w1, $w2, $x2 ; CHECK-LABEL: name: dont_fold_invalid_mask ; CHECK: liveins: $w1, $w2, $x2 ; CHECK: [[COPY:%[0-9]+]]:gpr32 = COPY $w1 ; CHECK: %mask:gpr32 = MOVi32imm 42 ; CHECK: %ext:gpr32 = ANDWrr [[COPY]], %mask ; CHECK: %add_lhs:gpr32 = COPY $w2 ; CHECK: %res:gpr32 = ADDWrr %add_lhs, %ext ; CHECK: $w3 = COPY %res ; CHECK: RET_ReallyLR implicit $w3 %1:gpr(s32) = COPY $w1 %mask:gpr(s32) = G_CONSTANT i32 42 %ext:gpr(s32) = G_AND %1(s32), %mask %add_lhs:gpr(s32) = COPY $w2 %res:gpr(s32) = G_ADD %add_lhs, %ext $w3 = COPY %res(s32) RET_ReallyLR implicit $w3 ... --- name: dont_fold_invalid_shl alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true machineFunctionInfo: {} body: | bb.0: liveins: $w1, $w2, $x2 ; CHECK-LABEL: name: dont_fold_invalid_shl ; CHECK: liveins: $w1, $w2, $x2 ; CHECK: %wide_1:gpr32 = COPY $w1 ; CHECK: %ext:gpr32 = SBFMWri %wide_1, 0, 15 ; CHECK: %add_lhs:gpr32 = COPY $w2 ; CHECK: %res:gpr32 = ADDWrs %add_lhs, %ext, 5 ; CHECK: $w3 = COPY %res ; CHECK: RET_ReallyLR implicit $w3 %wide_1:gpr(s32) = COPY $w1 %1:gpr(s16) = G_TRUNC %wide_1 %ext:gpr(s32) = G_SEXT %1(s16) %imm:gpr(s32) = G_CONSTANT i32 5 %shl:gpr(s32) = G_SHL %ext, %imm %add_lhs:gpr(s32) = COPY $w2 %res:gpr(s32) = G_ADD %add_lhs, %shl $w3 = COPY %res(s32) RET_ReallyLR implicit $w3 ... --- name: sub_sext_s32_to_s64 alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true machineFunctionInfo: {} body: | bb.0: liveins: $w1, $x2 ; CHECK-LABEL: name: sub_sext_s32_to_s64 ; CHECK: liveins: $w1, $x2 ; CHECK: [[COPY:%[0-9]+]]:gpr32 = COPY $w1 ; CHECK: %sub_lhs:gpr64sp = COPY $x2 ; CHECK: %res:gpr64 = SUBSXrx %sub_lhs, [[COPY]], 48, implicit-def $nzcv ; CHECK: $x3 = COPY %res ; CHECK: RET_ReallyLR implicit $x3 %1:gpr(s32) = COPY $w1 %ext:gpr(s64) = G_SEXT %1(s32) %sub_lhs:gpr(s64) = COPY $x2 %res:gpr(s64) = G_SUB %sub_lhs, %ext $x3 = COPY %res(s64) RET_ReallyLR implicit $x3 ... --- name: sub_sext_s16_to_s32 alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true machineFunctionInfo: {} body: | bb.0: liveins: $w1, $w2, $x2 ; CHECK-LABEL: name: sub_sext_s16_to_s32 ; CHECK: liveins: $w1, $w2, $x2 ; CHECK: %wide_1:gpr32 = COPY $w1 ; CHECK: %sub_lhs:gpr32sp = COPY $w2 ; CHECK: %res:gpr32 = SUBSWrx %sub_lhs, %wide_1, 40, implicit-def $nzcv ; CHECK: $w3 = COPY %res ; CHECK: RET_ReallyLR implicit $w3 %wide_1:gpr(s32) = COPY $w1 %1:gpr(s16) = G_TRUNC %wide_1 %ext:gpr(s32) = G_SEXT %1(s16) %sub_lhs:gpr(s32) = COPY $w2 %res:gpr(s32) = G_SUB %sub_lhs, %ext $w3 = COPY %res(s32) RET_ReallyLR implicit $w3 ... --- name: sub_zext_s16_to_s32 alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true machineFunctionInfo: {} body: | bb.0: liveins: $w1, $w2, $x2 ; CHECK-LABEL: name: sub_zext_s16_to_s32 ; CHECK: liveins: $w1, $w2, $x2 ; CHECK: %wide_1:gpr32 = COPY $w1 ; CHECK: %sub_lhs:gpr32sp = COPY $w2 ; CHECK: %res:gpr32 = SUBSWrx %sub_lhs, %wide_1, 8, implicit-def $nzcv ; CHECK: $w3 = COPY %res ; CHECK: RET_ReallyLR implicit $w3 %wide_1:gpr(s32) = COPY $w1 %1:gpr(s16) = G_TRUNC %wide_1 %ext:gpr(s32) = G_ZEXT %1(s16) %sub_lhs:gpr(s32) = COPY $w2 %res:gpr(s32) = G_SUB %sub_lhs, %ext $w3 = COPY %res(s32) RET_ReallyLR implicit $w3 ... --- name: sub_anyext_s16_to_s32 alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true machineFunctionInfo: {} body: | bb.0: liveins: $w1, $w2, $x2 ; CHECK-LABEL: name: sub_anyext_s16_to_s32 ; CHECK: liveins: $w1, $w2, $x2 ; CHECK: %wide_1:gpr32 = COPY $w1 ; CHECK: %sub_lhs:gpr32sp = COPY $w2 ; CHECK: %res:gpr32 = SUBSWrx %sub_lhs, %wide_1, 8, implicit-def $nzcv ; CHECK: $w3 = COPY %res ; CHECK: RET_ReallyLR implicit $w3 %wide_1:gpr(s32) = COPY $w1 %1:gpr(s16) = G_TRUNC %wide_1 %ext:gpr(s32) = G_ANYEXT %1(s16) %sub_lhs:gpr(s32) = COPY $w2 %res:gpr(s32) = G_SUB %sub_lhs, %ext $w3 = COPY %res(s32) RET_ReallyLR implicit $w3 ... --- name: sub_and_s16_to_s32_uxtb alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true machineFunctionInfo: {} body: | bb.0: liveins: $w1, $w2, $x2 ; CHECK-LABEL: name: sub_and_s16_to_s32_uxtb ; CHECK: liveins: $w1, $w2, $x2 ; CHECK: [[COPY:%[0-9]+]]:gpr32 = COPY $w1 ; CHECK: %sub_lhs:gpr32sp = COPY $w2 ; CHECK: %res:gpr32 = SUBSWrx %sub_lhs, [[COPY]], 0, implicit-def $nzcv ; CHECK: $w3 = COPY %res ; CHECK: RET_ReallyLR implicit $w3 %1:gpr(s32) = COPY $w1 %mask:gpr(s32) = G_CONSTANT i32 255 ; 0xff %ext:gpr(s32) = G_AND %1(s32), %mask %sub_lhs:gpr(s32) = COPY $w2 %res:gpr(s32) = G_SUB %sub_lhs, %ext $w3 = COPY %res(s32) RET_ReallyLR implicit $w3 ... --- name: sub_and_s16_to_s32_uxth alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true machineFunctionInfo: {} body: | bb.0: liveins: $w1, $w2, $x2 ; CHECK-LABEL: name: sub_and_s16_to_s32_uxth ; CHECK: liveins: $w1, $w2, $x2 ; CHECK: [[COPY:%[0-9]+]]:gpr32 = COPY $w1 ; CHECK: %sub_lhs:gpr32sp = COPY $w2 ; CHECK: %res:gpr32 = SUBSWrx %sub_lhs, [[COPY]], 8, implicit-def $nzcv ; CHECK: $w3 = COPY %res ; CHECK: RET_ReallyLR implicit $w3 %1:gpr(s32) = COPY $w1 %mask:gpr(s32) = G_CONSTANT i32 65535 ; 0xffff %ext:gpr(s32) = G_AND %1(s32), %mask %sub_lhs:gpr(s32) = COPY $w2 %res:gpr(s32) = G_SUB %sub_lhs, %ext $w3 = COPY %res(s32) RET_ReallyLR implicit $w3 --- name: sub_sext_s8_to_s32 alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true machineFunctionInfo: {} body: | bb.0: liveins: $w1, $w2, $x2 %wide_1:gpr(s32) = COPY $w1 %1:gpr(s8) = G_TRUNC %wide_1 %ext:gpr(s32) = G_SEXT %1(s8) %sub_lhs:gpr(s32) = COPY $w2 %res:gpr(s32) = G_SUB %sub_lhs, %ext $w3 = COPY %res(s32) RET_ReallyLR implicit $w3 ... --- name: sub_zext_s8_to_s32 alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true machineFunctionInfo: {} body: | bb.0: liveins: $w1, $w2, $x2 ; CHECK-LABEL: name: sub_zext_s8_to_s32 ; CHECK: liveins: $w1, $w2, $x2 ; CHECK: %wide_1:gpr32 = COPY $w1 ; CHECK: %sub_lhs:gpr32sp = COPY $w2 ; CHECK: %res:gpr32 = SUBSWrx %sub_lhs, %wide_1, 0, implicit-def $nzcv ; CHECK: $w3 = COPY %res ; CHECK: RET_ReallyLR implicit $w3 %wide_1:gpr(s32) = COPY $w1 %1:gpr(s8) = G_TRUNC %wide_1 %ext:gpr(s32) = G_ZEXT %1(s8) %sub_lhs:gpr(s32) = COPY $w2 %res:gpr(s32) = G_SUB %sub_lhs, %ext $w3 = COPY %res(s32) RET_ReallyLR implicit $w3 ... --- name: sub_anyext_s8_to_s32 alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true machineFunctionInfo: {} body: | bb.0: liveins: $w1, $w2, $x2 ; CHECK-LABEL: name: sub_anyext_s8_to_s32 ; CHECK: liveins: $w1, $w2, $x2 ; CHECK: %wide_1:gpr32 = COPY $w1 ; CHECK: %sub_lhs:gpr32sp = COPY $w2 ; CHECK: %res:gpr32 = SUBSWrx %sub_lhs, %wide_1, 0, implicit-def $nzcv ; CHECK: $w3 = COPY %res ; CHECK: RET_ReallyLR implicit $w3 %wide_1:gpr(s32) = COPY $w1 %1:gpr(s8) = G_TRUNC %wide_1 %ext:gpr(s32) = G_ANYEXT %1(s8) %sub_lhs:gpr(s32) = COPY $w2 %res:gpr(s32) = G_SUB %sub_lhs, %ext $w3 = COPY %res(s32) RET_ReallyLR implicit $w3 --- ... --- name: sub_sext_with_shl alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true machineFunctionInfo: {} body: | bb.0: liveins: $w1, $w2, $x2 ; CHECK-LABEL: name: sub_sext_with_shl ; CHECK: liveins: $w1, $w2, $x2 ; CHECK: %wide_1:gpr32 = COPY $w1 ; CHECK: %sub_lhs:gpr32sp = COPY $w2 ; CHECK: %res:gpr32 = SUBSWrx %sub_lhs, %wide_1, 43, implicit-def $nzcv ; CHECK: $w3 = COPY %res ; CHECK: RET_ReallyLR implicit $w3 %wide_1:gpr(s32) = COPY $w1 %1:gpr(s16) = G_TRUNC %wide_1 %ext:gpr(s32) = G_SEXT %1(s16) %imm:gpr(s32) = G_CONSTANT i32 3 %shl:gpr(s32) = G_SHL %ext, %imm %sub_lhs:gpr(s32) = COPY $w2 %res:gpr(s32) = G_SUB %sub_lhs, %shl $w3 = COPY %res(s32) RET_ReallyLR implicit $w3 ... --- name: sub_and_with_shl alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true machineFunctionInfo: {} body: | bb.0: liveins: $w1, $w2, $x2 ; CHECK-LABEL: name: sub_and_with_shl ; CHECK: liveins: $w1, $w2, $x2 ; CHECK: [[COPY:%[0-9]+]]:gpr32 = COPY $w1 ; CHECK: %sub_lhs:gpr32sp = COPY $w2 ; CHECK: %res:gpr32 = SUBSWrx %sub_lhs, [[COPY]], 3, implicit-def $nzcv ; CHECK: $w3 = COPY %res ; CHECK: RET_ReallyLR implicit $w3 %1:gpr(s32) = COPY $w1 %mask:gpr(s32) = G_CONSTANT i32 255 ; 0xff %ext:gpr(s32) = G_AND %1(s32), %mask %imm:gpr(s32) = G_CONSTANT i32 3 %shl:gpr(s32) = G_SHL %ext, %imm %sub_lhs:gpr(s32) = COPY $w2 %res:gpr(s32) = G_SUB %sub_lhs, %shl $w3 = COPY %res(s32) RET_ReallyLR implicit $w3