# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py # RUN: llc -mtriple=aarch64-apple-darwin -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s ... --- name: select_f32 alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true machineFunctionInfo: {} body: | bb.0: liveins: $s0, $s1, $w0 ; CHECK-LABEL: name: select_f32 ; CHECK: liveins: $s0, $s1, $w0 ; CHECK: [[COPY:%[0-9]+]]:gpr32 = COPY $w0 ; CHECK: [[COPY1:%[0-9]+]]:fpr32 = COPY $s0 ; CHECK: [[COPY2:%[0-9]+]]:fpr32 = COPY $s1 ; CHECK: [[COPY3:%[0-9]+]]:fpr32 = COPY [[COPY]] ; CHECK: [[COPY4:%[0-9]+]]:gpr32 = COPY [[COPY3]] ; CHECK: [[ANDSWri:%[0-9]+]]:gpr32 = ANDSWri [[COPY4]], 0, implicit-def $nzcv ; CHECK: [[FCSELSrrr:%[0-9]+]]:fpr32 = FCSELSrrr [[COPY1]], [[COPY2]], 1, implicit $nzcv ; CHECK: $s0 = COPY [[FCSELSrrr]] ; CHECK: RET_ReallyLR implicit $s0 %3:gpr(s32) = COPY $w0 %0:gpr(s1) = G_TRUNC %3(s32) %1:fpr(s32) = COPY $s0 %2:fpr(s32) = COPY $s1 %5:fpr(s1) = COPY %0(s1) %4:fpr(s32) = G_SELECT %5(s1), %1, %2 $s0 = COPY %4(s32) RET_ReallyLR implicit $s0 ... --- name: select_f64 alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true machineFunctionInfo: {} body: | bb.0: liveins: $d0, $d1, $w0 ; CHECK-LABEL: name: select_f64 ; CHECK: liveins: $d0, $d1, $w0 ; CHECK: [[COPY:%[0-9]+]]:gpr32 = COPY $w0 ; CHECK: [[COPY1:%[0-9]+]]:fpr64 = COPY $d0 ; CHECK: [[COPY2:%[0-9]+]]:fpr64 = COPY $d1 ; CHECK: [[COPY3:%[0-9]+]]:fpr32 = COPY [[COPY]] ; CHECK: [[COPY4:%[0-9]+]]:gpr32 = COPY [[COPY3]] ; CHECK: [[ANDSWri:%[0-9]+]]:gpr32 = ANDSWri [[COPY4]], 0, implicit-def $nzcv ; CHECK: [[FCSELDrrr:%[0-9]+]]:fpr64 = FCSELDrrr [[COPY1]], [[COPY2]], 1, implicit $nzcv ; CHECK: $d0 = COPY [[FCSELDrrr]] ; CHECK: RET_ReallyLR implicit $d0 %3:gpr(s32) = COPY $w0 %0:gpr(s1) = G_TRUNC %3(s32) %1:fpr(s64) = COPY $d0 %2:fpr(s64) = COPY $d1 %5:fpr(s1) = COPY %0(s1) %4:fpr(s64) = G_SELECT %5(s1), %1, %2 $d0 = COPY %4(s64) RET_ReallyLR implicit $d0 ... --- name: csel legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $w0, $w1, $w2, $w3 ; CHECK-LABEL: name: csel ; CHECK: liveins: $w0, $w1, $w2, $w3 ; CHECK: %reg0:gpr32 = COPY $w0 ; CHECK: %reg1:gpr32 = COPY $w1 ; CHECK: %t:gpr32 = COPY $w2 ; CHECK: %f:gpr32 = COPY $w3 ; CHECK: [[SUBSWrr:%[0-9]+]]:gpr32 = SUBSWrr %reg0, %reg1, implicit-def $nzcv ; CHECK: %select:gpr32 = CSELWr %t, %f, 1, implicit $nzcv ; CHECK: $w0 = COPY %select ; CHECK: RET_ReallyLR implicit $w0 %reg0:gpr(s32) = COPY $w0 %reg1:gpr(s32) = COPY $w1 %cmp:gpr(s32) = G_ICMP intpred(ne), %reg0(s32), %reg1 %cond:gpr(s1) = G_TRUNC %cmp(s32) %t:gpr(s32) = COPY $w2 %f:gpr(s32) = COPY $w3 %select:gpr(s32) = G_SELECT %cond(s1), %t, %f $w0 = COPY %select(s32) RET_ReallyLR implicit $w0 ... --- name: csinc_t_0_f_1 legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $w0, $w1 ; G_SELECT cc, 0, 1 -> CSINC zreg, zreg, cc ; CHECK-LABEL: name: csinc_t_0_f_1 ; CHECK: liveins: $w0, $w1 ; CHECK: %reg0:gpr32 = COPY $w0 ; CHECK: %reg1:gpr32 = COPY $w1 ; CHECK: [[SUBSWrr:%[0-9]+]]:gpr32 = SUBSWrr %reg0, %reg1, implicit-def $nzcv ; CHECK: %select:gpr32 = CSINCWr $wzr, $wzr, 1, implicit $nzcv ; CHECK: $w0 = COPY %select ; CHECK: RET_ReallyLR implicit $w0 %reg0:gpr(s32) = COPY $w0 %reg1:gpr(s32) = COPY $w1 %cmp:gpr(s32) = G_ICMP intpred(ne), %reg0(s32), %reg1 %cond:gpr(s1) = G_TRUNC %cmp(s32) %t:gpr(s32) = G_CONSTANT i32 0 %f:gpr(s32) = G_CONSTANT i32 1 %select:gpr(s32) = G_SELECT %cond(s1), %t, %f $w0 = COPY %select(s32) RET_ReallyLR implicit $w0 ... --- name: csinv_t_0_f_neg_1 legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $w0, $w1 ; G_SELECT cc 0, -1 -> CSINV zreg, zreg cc ; CHECK-LABEL: name: csinv_t_0_f_neg_1 ; CHECK: liveins: $w0, $w1 ; CHECK: %reg0:gpr32 = COPY $w0 ; CHECK: %reg1:gpr32 = COPY $w1 ; CHECK: [[SUBSWrr:%[0-9]+]]:gpr32 = SUBSWrr %reg0, %reg1, implicit-def $nzcv ; CHECK: %select:gpr32 = CSINVWr $wzr, $wzr, 1, implicit $nzcv ; CHECK: $w0 = COPY %select ; CHECK: RET_ReallyLR implicit $w0 %reg0:gpr(s32) = COPY $w0 %reg1:gpr(s32) = COPY $w1 %cmp:gpr(s32) = G_ICMP intpred(ne), %reg0(s32), %reg1 %cond:gpr(s1) = G_TRUNC %cmp(s32) %t:gpr(s32) = G_CONSTANT i32 0 %f:gpr(s32) = G_CONSTANT i32 -1 %select:gpr(s32) = G_SELECT %cond(s1), %t, %f $w0 = COPY %select(s32) RET_ReallyLR implicit $w0 ... --- name: csinc_t_1 legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $w0, $w1, $w2 ; G_SELECT cc, 1, f -> CSINC f, zreg, inv_cc ; CHECK-LABEL: name: csinc_t_1 ; CHECK: liveins: $w0, $w1, $w2 ; CHECK: %reg0:gpr32 = COPY $w0 ; CHECK: %reg1:gpr32 = COPY $w1 ; CHECK: %f:gpr32 = COPY $w2 ; CHECK: [[SUBSWrr:%[0-9]+]]:gpr32 = SUBSWrr %reg0, %reg1, implicit-def $nzcv ; CHECK: %select:gpr32 = CSINCWr %f, $wzr, 0, implicit $nzcv ; CHECK: $w0 = COPY %select ; CHECK: RET_ReallyLR implicit $w0 %reg0:gpr(s32) = COPY $w0 %reg1:gpr(s32) = COPY $w1 %cmp:gpr(s32) = G_ICMP intpred(ne), %reg0(s32), %reg1 %cond:gpr(s1) = G_TRUNC %cmp(s32) %t:gpr(s32) = G_CONSTANT i32 1 %f:gpr(s32) = COPY $w2 %select:gpr(s32) = G_SELECT %cond(s1), %t, %f $w0 = COPY %select(s32) RET_ReallyLR implicit $w0 ... --- name: csinv_t_neg_1 legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $w0, $w1, $w2 ; G_SELECT cc, -1, f -> CSINV f, zreg, inv_cc ; CHECK-LABEL: name: csinv_t_neg_1 ; CHECK: liveins: $w0, $w1, $w2 ; CHECK: %reg0:gpr32 = COPY $w0 ; CHECK: %reg1:gpr32 = COPY $w1 ; CHECK: %f:gpr32 = COPY $w2 ; CHECK: [[SUBSWrr:%[0-9]+]]:gpr32 = SUBSWrr %reg0, %reg1, implicit-def $nzcv ; CHECK: %select:gpr32 = CSINVWr %f, $wzr, 0, implicit $nzcv ; CHECK: $w0 = COPY %select ; CHECK: RET_ReallyLR implicit $w0 %reg0:gpr(s32) = COPY $w0 %reg1:gpr(s32) = COPY $w1 %cmp:gpr(s32) = G_ICMP intpred(ne), %reg0(s32), %reg1 %cond:gpr(s1) = G_TRUNC %cmp(s32) %t:gpr(s32) = G_CONSTANT i32 -1 %f:gpr(s32) = COPY $w2 %select:gpr(s32) = G_SELECT %cond(s1), %t, %f $w0 = COPY %select(s32) RET_ReallyLR implicit $w0 ... --- name: csinc_f_1 legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $w0, $w1, $w2 ; G_SELECT cc, t, 1 -> CSINC t, zreg, cc ; CHECK-LABEL: name: csinc_f_1 ; CHECK: liveins: $w0, $w1, $w2 ; CHECK: %reg0:gpr32 = COPY $w0 ; CHECK: %reg1:gpr32 = COPY $w1 ; CHECK: %t:gpr32 = COPY $w2 ; CHECK: [[SUBSWrr:%[0-9]+]]:gpr32 = SUBSWrr %reg0, %reg1, implicit-def $nzcv ; CHECK: %select:gpr32 = CSINCWr %t, $wzr, 1, implicit $nzcv ; CHECK: $w0 = COPY %select ; CHECK: RET_ReallyLR implicit $w0 %reg0:gpr(s32) = COPY $w0 %reg1:gpr(s32) = COPY $w1 %cmp:gpr(s32) = G_ICMP intpred(ne), %reg0(s32), %reg1 %cond:gpr(s1) = G_TRUNC %cmp(s32) %t:gpr(s32) = COPY $w2 %f:gpr(s32) = G_CONSTANT i32 1 %select:gpr(s32) = G_SELECT %cond(s1), %t, %f $w0 = COPY %select(s32) RET_ReallyLR implicit $w0 ... --- name: csinc_f_neg_1 legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $w0, $w1, $w2 ; G_SELECT cc, t, -1 -> CSINC t, zreg, cc ; CHECK-LABEL: name: csinc_f_neg_1 ; CHECK: liveins: $w0, $w1, $w2 ; CHECK: %reg0:gpr32 = COPY $w0 ; CHECK: %reg1:gpr32 = COPY $w1 ; CHECK: %t:gpr32 = COPY $w2 ; CHECK: [[SUBSWrr:%[0-9]+]]:gpr32 = SUBSWrr %reg0, %reg1, implicit-def $nzcv ; CHECK: %select:gpr32 = CSINVWr %t, $wzr, 1, implicit $nzcv ; CHECK: $w0 = COPY %select ; CHECK: RET_ReallyLR implicit $w0 %reg0:gpr(s32) = COPY $w0 %reg1:gpr(s32) = COPY $w1 %cmp:gpr(s32) = G_ICMP intpred(ne), %reg0(s32), %reg1 %cond:gpr(s1) = G_TRUNC %cmp(s32) %t:gpr(s32) = COPY $w2 %f:gpr(s32) = G_CONSTANT i32 -1 %select:gpr(s32) = G_SELECT %cond(s1), %t, %f $w0 = COPY %select(s32) RET_ReallyLR implicit $w0 ... --- name: csinc_t_1_no_cmp legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $w0, $w1 ; G_SELECT cc, 1, f -> CSINC f, zreg, inv_cc ; CHECK-LABEL: name: csinc_t_1_no_cmp ; CHECK: liveins: $w0, $w1 ; CHECK: %reg0:gpr32 = COPY $w0 ; CHECK: %f:gpr32 = COPY $w1 ; CHECK: [[ANDSWri:%[0-9]+]]:gpr32 = ANDSWri %reg0, 0, implicit-def $nzcv ; CHECK: %select:gpr32 = CSINCWr %f, $wzr, 0, implicit $nzcv ; CHECK: $w0 = COPY %select ; CHECK: RET_ReallyLR implicit $w0 %reg0:gpr(s32) = COPY $w0 %cond:gpr(s1) = G_TRUNC %reg0(s32) %t:gpr(s32) = G_CONSTANT i32 1 %f:gpr(s32) = COPY $w1 %select:gpr(s32) = G_SELECT %cond(s1), %t, %f $w0 = COPY %select(s32) RET_ReallyLR implicit $w0 ... --- name: csinc_f_1_no_cmp legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $w0, $w1 ; G_SELECT cc, t, 1 -> CSINC t, zreg, cc ; CHECK-LABEL: name: csinc_f_1_no_cmp ; CHECK: liveins: $w0, $w1 ; CHECK: %reg0:gpr32 = COPY $w0 ; CHECK: %t:gpr32 = COPY $w1 ; CHECK: [[ANDSWri:%[0-9]+]]:gpr32 = ANDSWri %reg0, 0, implicit-def $nzcv ; CHECK: %select:gpr32 = CSINCWr %t, $wzr, 1, implicit $nzcv ; CHECK: $w0 = COPY %select ; CHECK: RET_ReallyLR implicit $w0 %reg0:gpr(s32) = COPY $w0 %cond:gpr(s1) = G_TRUNC %reg0(s32) %t:gpr(s32) = COPY $w1 %f:gpr(s32) = G_CONSTANT i32 1 %select:gpr(s32) = G_SELECT %cond(s1), %t, %f $w0 = COPY %select(s32) RET_ReallyLR implicit $w0 ... --- name: csinc_t_1_no_cmp_s64 legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $x0, $x1 ; G_SELECT cc, 1, f -> CSINC f, zreg, inv_cc ; CHECK-LABEL: name: csinc_t_1_no_cmp_s64 ; CHECK: liveins: $x0, $x1 ; CHECK: %reg0:gpr64 = COPY $x0 ; CHECK: %cond:gpr32 = COPY %reg0.sub_32 ; CHECK: %f:gpr64 = COPY $x1 ; CHECK: [[ANDSWri:%[0-9]+]]:gpr32 = ANDSWri %cond, 0, implicit-def $nzcv ; CHECK: %select:gpr64 = CSINCXr %f, $xzr, 0, implicit $nzcv ; CHECK: $x0 = COPY %select ; CHECK: RET_ReallyLR implicit $x0 %reg0:gpr(s64) = COPY $x0 %cond:gpr(s1) = G_TRUNC %reg0(s64) %t:gpr(s64) = G_CONSTANT i64 1 %f:gpr(s64) = COPY $x1 %select:gpr(s64) = G_SELECT %cond(s1), %t, %f $x0 = COPY %select(s64) RET_ReallyLR implicit $x0 ... --- name: csneg_s32 legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $w0, $w1, $w2 ; G_SELECT cc, true, (G_SUB 0, x) -> CSNEG true, x, cc ; CHECK-LABEL: name: csneg_s32 ; CHECK: liveins: $w0, $w1, $w2 ; CHECK: %reg0:gpr32 = COPY $w0 ; CHECK: %reg1:gpr32 = COPY $w1 ; CHECK: %t:gpr32 = COPY $w2 ; CHECK: [[ANDSWri:%[0-9]+]]:gpr32 = ANDSWri %reg0, 0, implicit-def $nzcv ; CHECK: %select:gpr32 = CSNEGWr %t, %reg1, 1, implicit $nzcv ; CHECK: $w0 = COPY %select ; CHECK: RET_ReallyLR implicit $w0 %reg0:gpr(s32) = COPY $w0 %cond:gpr(s1) = G_TRUNC %reg0(s32) %reg1:gpr(s32) = COPY $w1 %t:gpr(s32) = COPY $w2 %zero:gpr(s32) = G_CONSTANT i32 0 %sub:gpr(s32) = G_SUB %zero(s32), %reg1 %select:gpr(s32) = G_SELECT %cond(s1), %t, %sub $w0 = COPY %select(s32) RET_ReallyLR implicit $w0 ... --- name: csneg_inverted_cc legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $w0, $w1, $w2 ; G_SELECT cc, (G_SUB 0, %x), %false -> CSNEG %x, %false, inv_cc ; CHECK-LABEL: name: csneg_inverted_cc ; CHECK: liveins: $w0, $w1, $w2 ; CHECK: %reg0:gpr32 = COPY $w0 ; CHECK: %reg1:gpr32 = COPY $w1 ; CHECK: %f:gpr32 = COPY $w2 ; CHECK: [[ANDSWri:%[0-9]+]]:gpr32 = ANDSWri %reg0, 0, implicit-def $nzcv ; CHECK: %select:gpr32 = CSNEGWr %f, %reg1, 0, implicit $nzcv ; CHECK: $w0 = COPY %select ; CHECK: RET_ReallyLR implicit $w0 %reg0:gpr(s32) = COPY $w0 %cond:gpr(s1) = G_TRUNC %reg0(s32) %reg1:gpr(s32) = COPY $w1 %f:gpr(s32) = COPY $w2 %zero:gpr(s32) = G_CONSTANT i32 0 %sub:gpr(s32) = G_SUB %zero(s32), %reg1 %select:gpr(s32) = G_SELECT %cond(s1), %sub, %f $w0 = COPY %select(s32) RET_ReallyLR implicit $w0 ... --- name: csneg_s64 legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $x0, $x1, $x2 ; G_SELECT cc, true, (G_SUB 0, x) -> CSNEG true, x, cc ; CHECK-LABEL: name: csneg_s64 ; CHECK: liveins: $x0, $x1, $x2 ; CHECK: %reg0:gpr64 = COPY $x0 ; CHECK: %cond:gpr32 = COPY %reg0.sub_32 ; CHECK: %reg1:gpr64 = COPY $x1 ; CHECK: %t:gpr64 = COPY $x2 ; CHECK: [[ANDSWri:%[0-9]+]]:gpr32 = ANDSWri %cond, 0, implicit-def $nzcv ; CHECK: %select:gpr64 = CSNEGXr %t, %reg1, 1, implicit $nzcv ; CHECK: $x0 = COPY %select ; CHECK: RET_ReallyLR implicit $x0 %reg0:gpr(s64) = COPY $x0 %cond:gpr(s1) = G_TRUNC %reg0(s64) %reg1:gpr(s64) = COPY $x1 %t:gpr(s64) = COPY $x2 %zero:gpr(s64) = G_CONSTANT i64 0 %sub:gpr(s64) = G_SUB %zero(s64), %reg1 %select:gpr(s64) = G_SELECT %cond(s1), %t, %sub $x0 = COPY %select(s64) RET_ReallyLR implicit $x0 ... --- name: csneg_with_true_cst legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $w0, $w1, $w2 ; We should prefer eliminating the G_SUB over eliminating the constant true ; value. ; CHECK-LABEL: name: csneg_with_true_cst ; CHECK: liveins: $w0, $w1, $w2 ; CHECK: %reg0:gpr32 = COPY $w0 ; CHECK: %t:gpr32 = MOVi32imm 1 ; CHECK: %reg2:gpr32 = COPY $w2 ; CHECK: [[ANDSWri:%[0-9]+]]:gpr32 = ANDSWri %reg0, 0, implicit-def $nzcv ; CHECK: %select:gpr32 = CSNEGWr %t, %reg2, 1, implicit $nzcv ; CHECK: $w0 = COPY %select ; CHECK: RET_ReallyLR implicit $w0 %reg0:gpr(s32) = COPY $w0 %cond:gpr(s1) = G_TRUNC %reg0(s32) %reg1:gpr(s32) = COPY $w1 %t:gpr(s32) = G_CONSTANT i32 1 %zero:gpr(s32) = G_CONSTANT i32 0 %reg2:gpr(s32) = COPY $w2 %sub:gpr(s32) = G_SUB %zero(s32), %reg2 %select:gpr(s32) = G_SELECT %cond(s1), %t, %sub $w0 = COPY %select(s32) RET_ReallyLR implicit $w0 ... --- name: csinv_s32 legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $w0, $w1, $w2 ; G_SELECT cc, true, (G_XOR x, -1) -> CSINV true, x, cc ; CHECK-LABEL: name: csinv_s32 ; CHECK: liveins: $w0, $w1, $w2 ; CHECK: %reg0:gpr32 = COPY $w0 ; CHECK: %reg1:gpr32 = COPY $w1 ; CHECK: %t:gpr32 = COPY $w2 ; CHECK: [[ANDSWri:%[0-9]+]]:gpr32 = ANDSWri %reg0, 0, implicit-def $nzcv ; CHECK: %select:gpr32 = CSINVWr %t, %reg1, 1, implicit $nzcv ; CHECK: $w0 = COPY %select ; CHECK: RET_ReallyLR implicit $w0 %reg0:gpr(s32) = COPY $w0 %reg1:gpr(s32) = COPY $w1 %cond:gpr(s1) = G_TRUNC %reg0(s32) %t:gpr(s32) = COPY $w2 %negative_one:gpr(s32) = G_CONSTANT i32 -1 %xor:gpr(s32) = G_XOR %reg1(s32), %negative_one %select:gpr(s32) = G_SELECT %cond(s1), %t, %xor $w0 = COPY %select(s32) RET_ReallyLR implicit $w0 ... --- name: csinv_inverted_cc legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $w0, $w1, $w2 ; G_SELECT cc, (G_XOR x, -1), %false -> CSINV %x, %false, inv_cc ; CHECK-LABEL: name: csinv_inverted_cc ; CHECK: liveins: $w0, $w1, $w2 ; CHECK: %reg0:gpr32 = COPY $w0 ; CHECK: %reg1:gpr32 = COPY $w1 ; CHECK: %f:gpr32 = COPY $w2 ; CHECK: [[ANDSWri:%[0-9]+]]:gpr32 = ANDSWri %reg0, 0, implicit-def $nzcv ; CHECK: %select:gpr32 = CSINVWr %f, %reg1, 0, implicit $nzcv ; CHECK: $w0 = COPY %select ; CHECK: RET_ReallyLR implicit $w0 %reg0:gpr(s32) = COPY $w0 %reg1:gpr(s32) = COPY $w1 %cond:gpr(s1) = G_TRUNC %reg0(s32) %f:gpr(s32) = COPY $w2 %negative_one:gpr(s32) = G_CONSTANT i32 -1 %xor:gpr(s32) = G_XOR %reg1(s32), %negative_one %select:gpr(s32) = G_SELECT %cond(s1), %xor, %f $w0 = COPY %select(s32) RET_ReallyLR implicit $w0 ... --- name: csinv_s64 legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $x0, $x1, $x2 ; G_SELECT cc, true, (G_XOR x, -1) -> CSINV true, x, cc ; CHECK-LABEL: name: csinv_s64 ; CHECK: liveins: $x0, $x1, $x2 ; CHECK: %reg0:gpr64 = COPY $x0 ; CHECK: %reg1:gpr64 = COPY $x1 ; CHECK: %cond:gpr32 = COPY %reg0.sub_32 ; CHECK: %t:gpr64 = COPY $x2 ; CHECK: [[ANDSWri:%[0-9]+]]:gpr32 = ANDSWri %cond, 0, implicit-def $nzcv ; CHECK: %select:gpr64 = CSINVXr %t, %reg1, 1, implicit $nzcv ; CHECK: $x0 = COPY %select ; CHECK: RET_ReallyLR implicit $x0 %reg0:gpr(s64) = COPY $x0 %reg1:gpr(s64) = COPY $x1 %cond:gpr(s1) = G_TRUNC %reg0(s64) %t:gpr(s64) = COPY $x2 %negative_one:gpr(s64) = G_CONSTANT i64 -1 %xor:gpr(s64) = G_XOR %reg1(s64), %negative_one %select:gpr(s64) = G_SELECT %cond(s1), %t, %xor $x0 = COPY %select(s64) RET_ReallyLR implicit $x0 ... --- name: xor_not_negative_one legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $x0, $x1, $x2 ; zext(s32 -1) != s64 -1, so we can't fold it away. ; CHECK-LABEL: name: xor_not_negative_one ; CHECK: liveins: $x0, $x1, $x2 ; CHECK: %reg0:gpr64 = COPY $x0 ; CHECK: %reg1:gpr64 = COPY $x1 ; CHECK: %cond:gpr32 = COPY %reg0.sub_32 ; CHECK: %t:gpr64 = COPY $x2 ; CHECK: %negative_one:gpr32 = MOVi32imm -1 ; CHECK: %zext:gpr64 = SUBREG_TO_REG 0, %negative_one, %subreg.sub_32 ; CHECK: %xor:gpr64 = EORXrr %reg1, %zext ; CHECK: [[ANDSWri:%[0-9]+]]:gpr32 = ANDSWri %cond, 0, implicit-def $nzcv ; CHECK: %select:gpr64 = CSELXr %t, %xor, 1, implicit $nzcv ; CHECK: $x0 = COPY %select ; CHECK: RET_ReallyLR implicit $x0 %reg0:gpr(s64) = COPY $x0 %reg1:gpr(s64) = COPY $x1 %cond:gpr(s1) = G_TRUNC %reg0(s64) %t:gpr(s64) = COPY $x2 %negative_one:gpr(s32) = G_CONSTANT i32 -1 %zext:gpr(s64) = G_ZEXT %negative_one(s32) %xor:gpr(s64) = G_XOR %reg1(s64), %zext %select:gpr(s64) = G_SELECT %cond(s1), %t, %xor $x0 = COPY %select(s64) RET_ReallyLR implicit $x0 ... --- name: csinc_s32 legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $w0, $w1, $w2 ; G_SELECT cc, %true, (G_ADD %x, 1) -> CSINC %true, %x, cc ; CHECK-LABEL: name: csinc_s32 ; CHECK: liveins: $w0, $w1, $w2 ; CHECK: %reg0:gpr32 = COPY $w0 ; CHECK: %reg1:gpr32 = COPY $w1 ; CHECK: %t:gpr32 = COPY $w2 ; CHECK: [[ANDSWri:%[0-9]+]]:gpr32 = ANDSWri %reg0, 0, implicit-def $nzcv ; CHECK: %select:gpr32 = CSINCWr %t, %reg1, 1, implicit $nzcv ; CHECK: $w0 = COPY %select ; CHECK: RET_ReallyLR implicit $w0 %reg0:gpr(s32) = COPY $w0 %reg1:gpr(s32) = COPY $w1 %cond:gpr(s1) = G_TRUNC %reg0(s32) %t:gpr(s32) = COPY $w2 %one:gpr(s32) = G_CONSTANT i32 1 %add:gpr(s32) = G_ADD %reg1(s32), %one %select:gpr(s32) = G_SELECT %cond(s1), %t, %add $w0 = COPY %select(s32) RET_ReallyLR implicit $w0 ... --- name: csinc_s32_inverted_cc legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $w0, $w1, $w2 ; G_SELECT cc, (G_ADD %x, 1), %false -> CSINC %x, %false, inv_cc ; CHECK-LABEL: name: csinc_s32_inverted_cc ; CHECK: liveins: $w0, $w1, $w2 ; CHECK: %reg0:gpr32 = COPY $w0 ; CHECK: %reg1:gpr32 = COPY $w1 ; CHECK: %f:gpr32 = COPY $w2 ; CHECK: [[ANDSWri:%[0-9]+]]:gpr32 = ANDSWri %reg0, 0, implicit-def $nzcv ; CHECK: %select:gpr32 = CSINCWr %f, %reg1, 0, implicit $nzcv ; CHECK: $w0 = COPY %select ; CHECK: RET_ReallyLR implicit $w0 %reg0:gpr(s32) = COPY $w0 %reg1:gpr(s32) = COPY $w1 %cond:gpr(s1) = G_TRUNC %reg0(s32) %f:gpr(s32) = COPY $w2 %one:gpr(s32) = G_CONSTANT i32 1 %add:gpr(s32) = G_ADD %reg1(s32), %one %select:gpr(s32) = G_SELECT %cond(s1), %add, %f $w0 = COPY %select(s32) RET_ReallyLR implicit $w0 ... --- name: binop_dont_optimize_twice legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $w0, $w1, $w2 ; CHECK-LABEL: name: binop_dont_optimize_twice ; CHECK: liveins: $w0, $w1, $w2 ; CHECK: %reg0:gpr32 = COPY $w0 ; CHECK: %reg1:gpr32 = COPY $w1 ; CHECK: %reg2:gpr32 = COPY $w2 ; CHECK: %xor:gpr32 = ORNWrr $wzr, %reg1 ; CHECK: [[ANDSWri:%[0-9]+]]:gpr32 = ANDSWri %reg0, 0, implicit-def $nzcv ; CHECK: %select:gpr32 = CSNEGWr %xor, %reg2, 1, implicit $nzcv ; CHECK: $w0 = COPY %select ; CHECK: RET_ReallyLR implicit $w0 %reg0:gpr(s32) = COPY $w0 %reg1:gpr(s32) = COPY $w1 %reg2:gpr(s32) = COPY $w2 %cond:gpr(s1) = G_TRUNC %reg0(s32) %f:gpr(s32) = COPY $w2 %negative_one:gpr(s32) = G_CONSTANT i32 -1 %xor:gpr(s32) = G_XOR %reg1(s32), %negative_one %zero:gpr(s32) = G_CONSTANT i32 0 %sub:gpr(s32) = G_SUB %zero(s32), %reg2 %select:gpr(s32) = G_SELECT %cond(s1), %xor, %sub $w0 = COPY %select(s32) RET_ReallyLR implicit $w0