# 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 # # Verify folding operations into G_ICMP. # # E.g cmn/adds folding: # # x = G_SUB 0, y # G_ICMP intpred(something_safe) z, x # # Folds to: # adds z, y # # Where "something_safe" is ne or eq. # # ands/tst folding: # # z = G_AND x, y # G_ICMP z, 0 # # Folds to: # # tst x, y # # When we have signed comparisons. # # Tests whose names start with cmn_ should use ADDS for the G_ICMP. Tests whose # names start with no_cmn should use SUBS. Similarly, tests whose names start # with TST should use ANDS for the G_ICMP. # ... --- name: cmn_s32_rhs alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $w0, $w1 ; CHECK-LABEL: name: cmn_s32_rhs ; CHECK: liveins: $w0, $w1 ; CHECK: [[COPY:%[0-9]+]]:gpr32 = COPY $w0 ; CHECK: [[COPY1:%[0-9]+]]:gpr32 = COPY $w1 ; CHECK: [[COPY2:%[0-9]+]]:gpr32 = COPY $wzr ; CHECK: [[MOVi32imm:%[0-9]+]]:gpr32 = MOVi32imm 1 ; CHECK: $wzr = ADDSWrr [[COPY]], [[COPY1]], implicit-def $nzcv ; CHECK: [[CSELWr:%[0-9]+]]:gpr32 = CSELWr [[MOVi32imm]], [[COPY2]], 1, implicit $nzcv ; CHECK: $w0 = COPY [[CSELWr]] ; CHECK: RET_ReallyLR implicit $w0 %0:gpr(s32) = COPY $w0 %1:gpr(s32) = COPY $w1 %2:gpr(s32) = G_CONSTANT i32 0 %6:gpr(s32) = G_CONSTANT i32 1 %3:gpr(s32) = G_SUB %2, %1 %7:gpr(s32) = G_ICMP intpred(ne), %0(s32), %3 %4:gpr(s1) = G_TRUNC %7(s32) %5:gpr(s32) = G_SELECT %4(s1), %6, %2 $w0 = COPY %5(s32) RET_ReallyLR implicit $w0 ... --- name: cmn_s32_lhs alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $w0, $w1 ; CHECK-LABEL: name: cmn_s32_lhs ; CHECK: liveins: $w0, $w1 ; CHECK: [[COPY:%[0-9]+]]:gpr32 = COPY $w0 ; CHECK: [[COPY1:%[0-9]+]]:gpr32 = COPY $w1 ; CHECK: [[COPY2:%[0-9]+]]:gpr32 = COPY $wzr ; CHECK: [[MOVi32imm:%[0-9]+]]:gpr32 = MOVi32imm 1 ; CHECK: $wzr = ADDSWrr [[COPY]], [[COPY1]], implicit-def $nzcv ; CHECK: [[CSELWr:%[0-9]+]]:gpr32 = CSELWr [[MOVi32imm]], [[COPY2]], 1, implicit $nzcv ; CHECK: $w0 = COPY [[CSELWr]] ; CHECK: RET_ReallyLR implicit $w0 %0:gpr(s32) = COPY $w0 %1:gpr(s32) = COPY $w1 %2:gpr(s32) = G_CONSTANT i32 0 %6:gpr(s32) = G_CONSTANT i32 1 %3:gpr(s32) = G_SUB %2, %0 %7:gpr(s32) = G_ICMP intpred(ne), %3(s32), %1 %4:gpr(s1) = G_TRUNC %7(s32) %5:gpr(s32) = G_SELECT %4(s1), %6, %2 $w0 = COPY %5(s32) RET_ReallyLR implicit $w0 ... --- name: no_cmn_s32_rhs alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $w0, $w1 ; CHECK-LABEL: name: no_cmn_s32_rhs ; CHECK: liveins: $w0, $w1 ; CHECK: [[COPY:%[0-9]+]]:gpr32 = COPY $w0 ; CHECK: [[COPY1:%[0-9]+]]:gpr32 = COPY $w1 ; CHECK: [[COPY2:%[0-9]+]]:gpr32 = COPY $wzr ; CHECK: [[MOVi32imm:%[0-9]+]]:gpr32 = MOVi32imm 1 ; CHECK: [[SUBSWrr:%[0-9]+]]:gpr32 = SUBSWrr [[COPY2]], [[COPY1]], implicit-def $nzcv ; CHECK: $wzr = SUBSWrr [[COPY]], [[SUBSWrr]], implicit-def $nzcv ; CHECK: [[CSELWr:%[0-9]+]]:gpr32 = CSELWr [[MOVi32imm]], [[COPY2]], 11, implicit $nzcv ; CHECK: $w0 = COPY [[CSELWr]] ; CHECK: RET_ReallyLR implicit $w0 %0:gpr(s32) = COPY $w0 %1:gpr(s32) = COPY $w1 %2:gpr(s32) = G_CONSTANT i32 0 %6:gpr(s32) = G_CONSTANT i32 1 %3:gpr(s32) = G_SUB %2, %1 %7:gpr(s32) = G_ICMP intpred(slt), %0(s32), %3 %4:gpr(s1) = G_TRUNC %7(s32) %5:gpr(s32) = G_SELECT %4(s1), %6, %2 $w0 = COPY %5(s32) RET_ReallyLR implicit $w0 ... --- name: no_cmn_s32_lhs alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $w0, $w1 ; CHECK-LABEL: name: no_cmn_s32_lhs ; CHECK: liveins: $w0, $w1 ; CHECK: [[COPY:%[0-9]+]]:gpr32 = COPY $w0 ; CHECK: [[COPY1:%[0-9]+]]:gpr32 = COPY $w1 ; CHECK: [[COPY2:%[0-9]+]]:gpr32 = COPY $wzr ; CHECK: [[MOVi32imm:%[0-9]+]]:gpr32 = MOVi32imm 1 ; CHECK: [[SUBSWrr:%[0-9]+]]:gpr32 = SUBSWrr [[COPY2]], [[COPY]], implicit-def $nzcv ; CHECK: $wzr = SUBSWrr [[SUBSWrr]], [[COPY1]], implicit-def $nzcv ; CHECK: [[CSELWr:%[0-9]+]]:gpr32 = CSELWr [[MOVi32imm]], [[COPY2]], 11, implicit $nzcv ; CHECK: $w0 = COPY [[CSELWr]] ; CHECK: RET_ReallyLR implicit $w0 %0:gpr(s32) = COPY $w0 %1:gpr(s32) = COPY $w1 %2:gpr(s32) = G_CONSTANT i32 0 %6:gpr(s32) = G_CONSTANT i32 1 %3:gpr(s32) = G_SUB %2, %0 %7:gpr(s32) = G_ICMP intpred(slt), %3(s32), %1 %4:gpr(s1) = G_TRUNC %7(s32) %5:gpr(s32) = G_SELECT %4(s1), %6, %2 $w0 = COPY %5(s32) RET_ReallyLR implicit $w0 ... --- name: cmn_s64_rhs alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $x0, $x1 ; CHECK-LABEL: name: cmn_s64_rhs ; CHECK: liveins: $x0, $x1 ; CHECK: [[COPY:%[0-9]+]]:gpr64 = COPY $x0 ; CHECK: [[COPY1:%[0-9]+]]:gpr64 = COPY $x1 ; CHECK: [[COPY2:%[0-9]+]]:gpr64 = COPY $xzr ; CHECK: [[MOVi32imm:%[0-9]+]]:gpr32 = MOVi32imm 1 ; CHECK: [[SUBREG_TO_REG:%[0-9]+]]:gpr64 = SUBREG_TO_REG 0, [[MOVi32imm]], %subreg.sub_32 ; CHECK: $xzr = ADDSXrr [[COPY]], [[COPY1]], implicit-def $nzcv ; CHECK: [[CSELXr:%[0-9]+]]:gpr64 = CSELXr [[SUBREG_TO_REG]], [[COPY2]], 1, implicit $nzcv ; CHECK: $x0 = COPY [[CSELXr]] ; CHECK: RET_ReallyLR implicit $x0 %0:gpr(s64) = COPY $x0 %1:gpr(s64) = COPY $x1 %2:gpr(s64) = G_CONSTANT i64 0 %6:gpr(s64) = G_CONSTANT i64 1 %3:gpr(s64) = G_SUB %2, %1 %7:gpr(s32) = G_ICMP intpred(ne), %0(s64), %3 %4:gpr(s1) = G_TRUNC %7(s32) %5:gpr(s64) = G_SELECT %4(s1), %6, %2 $x0 = COPY %5(s64) RET_ReallyLR implicit $x0 ... --- name: cmn_s64_lhs alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $x0, $x1 ; CHECK-LABEL: name: cmn_s64_lhs ; CHECK: liveins: $x0, $x1 ; CHECK: [[COPY:%[0-9]+]]:gpr64 = COPY $x0 ; CHECK: [[COPY1:%[0-9]+]]:gpr64 = COPY $x1 ; CHECK: [[COPY2:%[0-9]+]]:gpr64 = COPY $xzr ; CHECK: [[MOVi32imm:%[0-9]+]]:gpr32 = MOVi32imm 1 ; CHECK: [[SUBREG_TO_REG:%[0-9]+]]:gpr64 = SUBREG_TO_REG 0, [[MOVi32imm]], %subreg.sub_32 ; CHECK: $xzr = ADDSXrr [[COPY]], [[COPY1]], implicit-def $nzcv ; CHECK: [[CSELXr:%[0-9]+]]:gpr64 = CSELXr [[SUBREG_TO_REG]], [[COPY2]], 1, implicit $nzcv ; CHECK: $x0 = COPY [[CSELXr]] ; CHECK: RET_ReallyLR implicit $x0 %0:gpr(s64) = COPY $x0 %1:gpr(s64) = COPY $x1 %2:gpr(s64) = G_CONSTANT i64 0 %6:gpr(s64) = G_CONSTANT i64 1 %3:gpr(s64) = G_SUB %2, %0 %7:gpr(s32) = G_ICMP intpred(ne), %3(s64), %1 %4:gpr(s1) = G_TRUNC %7(s32) %5:gpr(s64) = G_SELECT %4(s1), %6, %2 $x0 = COPY %5(s64) RET_ReallyLR implicit $x0 ... --- name: no_cmn_s64_rhs alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $x0, $x1 ; CHECK-LABEL: name: no_cmn_s64_rhs ; CHECK: liveins: $x0, $x1 ; CHECK: [[COPY:%[0-9]+]]:gpr64 = COPY $x0 ; CHECK: [[COPY1:%[0-9]+]]:gpr64 = COPY $x1 ; CHECK: [[COPY2:%[0-9]+]]:gpr64 = COPY $xzr ; CHECK: [[MOVi32imm:%[0-9]+]]:gpr32 = MOVi32imm 1 ; CHECK: [[SUBREG_TO_REG:%[0-9]+]]:gpr64 = SUBREG_TO_REG 0, [[MOVi32imm]], %subreg.sub_32 ; CHECK: [[SUBSXrr:%[0-9]+]]:gpr64 = SUBSXrr [[COPY2]], [[COPY1]], implicit-def $nzcv ; CHECK: $xzr = SUBSXrr [[COPY]], [[SUBSXrr]], implicit-def $nzcv ; CHECK: [[CSELXr:%[0-9]+]]:gpr64 = CSELXr [[SUBREG_TO_REG]], [[COPY2]], 11, implicit $nzcv ; CHECK: $x0 = COPY [[CSELXr]] ; CHECK: RET_ReallyLR implicit $x0 %0:gpr(s64) = COPY $x0 %1:gpr(s64) = COPY $x1 %2:gpr(s64) = G_CONSTANT i64 0 %6:gpr(s64) = G_CONSTANT i64 1 %3:gpr(s64) = G_SUB %2, %1 %7:gpr(s32) = G_ICMP intpred(slt), %0(s64), %3 %4:gpr(s1) = G_TRUNC %7(s32) %5:gpr(s64) = G_SELECT %4(s1), %6, %2 $x0 = COPY %5(s64) RET_ReallyLR implicit $x0 ... --- name: no_cmn_s64_lhs alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $x0, $x1 ; CHECK-LABEL: name: no_cmn_s64_lhs ; CHECK: liveins: $x0, $x1 ; CHECK: [[COPY:%[0-9]+]]:gpr64 = COPY $x0 ; CHECK: [[COPY1:%[0-9]+]]:gpr64 = COPY $x1 ; CHECK: [[COPY2:%[0-9]+]]:gpr64 = COPY $xzr ; CHECK: [[MOVi32imm:%[0-9]+]]:gpr32 = MOVi32imm 1 ; CHECK: [[SUBREG_TO_REG:%[0-9]+]]:gpr64 = SUBREG_TO_REG 0, [[MOVi32imm]], %subreg.sub_32 ; CHECK: [[SUBSXrr:%[0-9]+]]:gpr64 = SUBSXrr [[COPY2]], [[COPY]], implicit-def $nzcv ; CHECK: $xzr = SUBSXrr [[SUBSXrr]], [[COPY1]], implicit-def $nzcv ; CHECK: [[CSELXr:%[0-9]+]]:gpr64 = CSELXr [[SUBREG_TO_REG]], [[COPY2]], 11, implicit $nzcv ; CHECK: $x0 = COPY [[CSELXr]] ; CHECK: RET_ReallyLR implicit $x0 %0:gpr(s64) = COPY $x0 %1:gpr(s64) = COPY $x1 %2:gpr(s64) = G_CONSTANT i64 0 %6:gpr(s64) = G_CONSTANT i64 1 %3:gpr(s64) = G_SUB %2, %0 %7:gpr(s32) = G_ICMP intpred(slt), %3(s64), %1 %4:gpr(s1) = G_TRUNC %7(s32) %5:gpr(s64) = G_SELECT %4(s1), %6, %2 $x0 = COPY %5(s64) RET_ReallyLR implicit $x0 ... --- name: tst_s32 alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $w0, $w1 ; CHECK-LABEL: name: tst_s32 ; CHECK: liveins: $w0, $w1 ; CHECK: [[COPY:%[0-9]+]]:gpr32 = COPY $w1 ; CHECK: [[COPY1:%[0-9]+]]:gpr32 = COPY $wzr ; CHECK: [[MOVi32imm:%[0-9]+]]:gpr32 = MOVi32imm 1 ; CHECK: $wzr = ANDSWrr [[COPY1]], [[COPY]], implicit-def $nzcv ; CHECK: [[CSELWr:%[0-9]+]]:gpr32 = CSELWr [[MOVi32imm]], [[COPY1]], 0, implicit $nzcv ; CHECK: $w0 = COPY [[CSELWr]] ; CHECK: RET_ReallyLR implicit $w0 %0:gpr(s32) = COPY $w0 %1:gpr(s32) = COPY $w1 %2:gpr(s32) = G_CONSTANT i32 0 %6:gpr(s32) = G_CONSTANT i32 1 %3:gpr(s32) = G_AND %2, %1 %8:gpr(s32) = G_CONSTANT i32 0 %7:gpr(s32) = G_ICMP intpred(eq), %3(s32), %8 %4:gpr(s1) = G_TRUNC %7(s32) %5:gpr(s32) = G_SELECT %4(s1), %6, %2 $w0 = COPY %5(s32) RET_ReallyLR implicit $w0 ... --- name: tst_s64 alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $x0, $x1 ; CHECK-LABEL: name: tst_s64 ; CHECK: liveins: $x0, $x1 ; CHECK: [[COPY:%[0-9]+]]:gpr64 = COPY $x1 ; CHECK: [[COPY1:%[0-9]+]]:gpr64 = COPY $xzr ; CHECK: [[MOVi32imm:%[0-9]+]]:gpr32 = MOVi32imm 1 ; CHECK: [[SUBREG_TO_REG:%[0-9]+]]:gpr64 = SUBREG_TO_REG 0, [[MOVi32imm]], %subreg.sub_32 ; CHECK: $xzr = ANDSXrr [[COPY1]], [[COPY]], implicit-def $nzcv ; CHECK: [[CSELXr:%[0-9]+]]:gpr64 = CSELXr [[SUBREG_TO_REG]], [[COPY1]], 0, implicit $nzcv ; CHECK: $x0 = COPY [[CSELXr]] ; CHECK: RET_ReallyLR implicit $x0 %0:gpr(s64) = COPY $x0 %1:gpr(s64) = COPY $x1 %2:gpr(s64) = G_CONSTANT i64 0 %6:gpr(s64) = G_CONSTANT i64 1 %3:gpr(s64) = G_AND %2, %1 %8:gpr(s64) = G_CONSTANT i64 0 %7:gpr(s32) = G_ICMP intpred(eq), %3(s64), %8 %4:gpr(s1) = G_TRUNC %7(s32) %5:gpr(s64) = G_SELECT %4(s1), %6, %2 $x0 = COPY %5(s64) RET_ReallyLR implicit $x0 ... --- name: no_tst_unsigned_compare alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $w0, $w1 ; CHECK-LABEL: name: no_tst_unsigned_compare ; CHECK: liveins: $w0, $w1 ; CHECK: [[COPY:%[0-9]+]]:gpr32 = COPY $w1 ; CHECK: [[COPY1:%[0-9]+]]:gpr32 = COPY $wzr ; CHECK: [[MOVi32imm:%[0-9]+]]:gpr32 = MOVi32imm 1 ; CHECK: [[ANDWrr:%[0-9]+]]:gpr32common = ANDWrr [[COPY1]], [[COPY]] ; CHECK: $wzr = SUBSWri [[ANDWrr]], 0, 0, implicit-def $nzcv ; CHECK: [[CSELWr:%[0-9]+]]:gpr32 = CSELWr [[MOVi32imm]], [[COPY1]], 8, implicit $nzcv ; CHECK: $w0 = COPY [[CSELWr]] ; CHECK: RET_ReallyLR implicit $w0 %0:gpr(s32) = COPY $w0 %1:gpr(s32) = COPY $w1 %2:gpr(s32) = G_CONSTANT i32 0 %6:gpr(s32) = G_CONSTANT i32 1 %3:gpr(s32) = G_AND %2, %1 %8:gpr(s32) = G_CONSTANT i32 0 %7:gpr(s32) = G_ICMP intpred(ugt), %3(s32), %8 %4:gpr(s1) = G_TRUNC %7(s32) %5:gpr(s32) = G_SELECT %4(s1), %6, %2 $w0 = COPY %5(s32) RET_ReallyLR implicit $w0 ... --- name: no_tst_nonzero alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $w0, $w1 ; CHECK-LABEL: name: no_tst_nonzero ; CHECK: liveins: $w0, $w1 ; CHECK: [[COPY:%[0-9]+]]:gpr32 = COPY $w1 ; CHECK: [[COPY1:%[0-9]+]]:gpr32 = COPY $wzr ; CHECK: [[MOVi32imm:%[0-9]+]]:gpr32 = MOVi32imm 1 ; CHECK: [[ANDWrr:%[0-9]+]]:gpr32common = ANDWrr [[COPY1]], [[COPY]] ; CHECK: $wzr = SUBSWri [[ANDWrr]], 42, 0, implicit-def $nzcv ; CHECK: [[CSELWr:%[0-9]+]]:gpr32 = CSELWr [[MOVi32imm]], [[COPY1]], 8, implicit $nzcv ; CHECK: $w0 = COPY [[CSELWr]] ; CHECK: RET_ReallyLR implicit $w0 %0:gpr(s32) = COPY $w0 %1:gpr(s32) = COPY $w1 %2:gpr(s32) = G_CONSTANT i32 0 %6:gpr(s32) = G_CONSTANT i32 1 %3:gpr(s32) = G_AND %2, %1 %8:gpr(s32) = G_CONSTANT i32 42 %7:gpr(s32) = G_ICMP intpred(ugt), %3(s32), %8 %4:gpr(s1) = G_TRUNC %7(s32) %5:gpr(s32) = G_SELECT %4(s1), %6, %2 $w0 = COPY %5(s32) RET_ReallyLR implicit $w0 ... --- name: imm_tst alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $w0, $w1 ; CHECK-LABEL: name: imm_tst ; CHECK: liveins: $w0, $w1 ; CHECK: [[COPY:%[0-9]+]]:gpr32 = COPY $w1 ; CHECK: $wzr = ANDSWri [[COPY]], 1, implicit-def $nzcv ; CHECK: [[CSINCWr:%[0-9]+]]:gpr32 = CSINCWr $wzr, $wzr, 1, implicit $nzcv ; CHECK: $w0 = COPY [[CSINCWr]] ; CHECK: RET_ReallyLR implicit $w0 %0:gpr(s32) = COPY $w0 %1:gpr(s32) = COPY $w1 %2:gpr(s32) = G_CONSTANT i32 0 %3:gpr(s32) = G_CONSTANT i32 1 ; This can be represented as a logical immediate, so we can pull it into ; the ANDS. We should get ANDSWri. %4:gpr(s32) = G_CONSTANT i32 3 %5:gpr(s32) = G_AND %1, %4 %6:gpr(s32) = G_ICMP intpred(eq), %5(s32), %2 $w0 = COPY %6(s32) RET_ReallyLR implicit $w0 ... --- name: no_imm_tst_not_logical_imm alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $w0, $w1 ; CHECK-LABEL: name: no_imm_tst_not_logical_imm ; CHECK: liveins: $w0, $w1 ; CHECK: [[COPY:%[0-9]+]]:gpr32 = COPY $w1 ; CHECK: [[MOVi32imm:%[0-9]+]]:gpr32 = MOVi32imm -1 ; CHECK: $wzr = ANDSWrr [[COPY]], [[MOVi32imm]], implicit-def $nzcv ; CHECK: [[CSINCWr:%[0-9]+]]:gpr32 = CSINCWr $wzr, $wzr, 1, implicit $nzcv ; CHECK: $w0 = COPY [[CSINCWr]] ; CHECK: RET_ReallyLR implicit $w0 %0:gpr(s32) = COPY $w0 %1:gpr(s32) = COPY $w1 %2:gpr(s32) = G_CONSTANT i32 0 %3:gpr(s32) = G_CONSTANT i32 1 ; This immediate can't be represented as a logical immediate. We shouldn't ; select ANDSWri. %4:gpr(s32) = G_CONSTANT i32 -1 %5:gpr(s32) = G_AND %1, %4 %6:gpr(s32) = G_ICMP intpred(eq), %5(s32), %2 $w0 = COPY %6(s32) RET_ReallyLR implicit $w0 ... --- name: test_physreg_copy alignment: 4 legalized: true regBankSelected: true tracksRegLiveness: true body: | bb.0: liveins: $x0, $x1 ; CHECK-LABEL: name: test_physreg_copy ; CHECK: liveins: $x0, $x1 ; CHECK: [[COPY:%[0-9]+]]:gpr64 = COPY $x0 ; CHECK: [[COPY1:%[0-9]+]]:gpr64 = COPY $x1 ; CHECK: $xzr = SUBSXrr [[COPY]], [[COPY1]], implicit-def $nzcv ; CHECK: [[CSINCWr:%[0-9]+]]:gpr32 = CSINCWr $wzr, $wzr, 1, implicit $nzcv ; CHECK: $w0 = COPY [[CSINCWr]] ; CHECK: RET_ReallyLR implicit $x0 %0:gpr(s64) = COPY $x0 %1:gpr(s64) = COPY $x1 ; When we find the defs of the LHS and RHS of the compare, we walk over ; copies. Make sure that we don't crash when we hit a copy from a physical ; register. %7:gpr(s32) = G_ICMP intpred(eq), %0, %1 $w0 = COPY %7(s32) RET_ReallyLR implicit $x0