| # 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: flip_eq |
| alignment: 4 |
| legalized: true |
| regBankSelected: true |
| body: | |
| ; CHECK-LABEL: name: flip_eq |
| ; CHECK: bb.0: |
| ; CHECK: successors: %bb.0(0x40000000), %bb.1(0x40000000) |
| ; CHECK: %copy:gpr64all = COPY $x0 |
| ; CHECK: [[COPY:%[0-9]+]]:gpr32all = COPY %copy.sub_32 |
| ; CHECK: [[COPY1:%[0-9]+]]:gpr32 = COPY [[COPY]] |
| ; CHECK: TBNZW [[COPY1]], 3, %bb.1 |
| ; CHECK: B %bb.0 |
| ; CHECK: bb.1: |
| ; CHECK: RET_ReallyLR |
| bb.0: |
| successors: %bb.0, %bb.1 |
| liveins: $x0 |
| %copy:gpr(s64) = COPY $x0 |
| |
| ; Check bit 3. |
| %bit:gpr(s64) = G_CONSTANT i64 8 |
| %zero:gpr(s64) = G_CONSTANT i64 0 |
| |
| ; 8 has the third bit set. |
| %fold_cst:gpr(s64) = G_CONSTANT i64 8 |
| |
| ; This only has the third bit set if %copy does not. So, to walk through |
| ; this, we want to use a TBNZW on %copy. |
| %fold_me:gpr(s64) = G_XOR %copy, %fold_cst |
| |
| %and:gpr(s64) = G_AND %fold_me, %bit |
| %cmp:gpr(s32) = G_ICMP intpred(eq), %and(s64), %zero |
| %cmp_trunc:gpr(s1) = G_TRUNC %cmp(s32) |
| G_BRCOND %cmp_trunc(s1), %bb.1 |
| G_BR %bb.0 |
| bb.1: |
| RET_ReallyLR |
| ... |
| --- |
| name: flip_ne |
| alignment: 4 |
| legalized: true |
| regBankSelected: true |
| body: | |
| ; CHECK-LABEL: name: flip_ne |
| ; CHECK: bb.0: |
| ; CHECK: successors: %bb.0(0x40000000), %bb.1(0x40000000) |
| ; CHECK: %copy:gpr64all = COPY $x0 |
| ; CHECK: [[COPY:%[0-9]+]]:gpr32all = COPY %copy.sub_32 |
| ; CHECK: [[COPY1:%[0-9]+]]:gpr32 = COPY [[COPY]] |
| ; CHECK: TBZW [[COPY1]], 3, %bb.1 |
| ; CHECK: B %bb.0 |
| ; CHECK: bb.1: |
| ; CHECK: RET_ReallyLR |
| bb.0: |
| successors: %bb.0, %bb.1 |
| liveins: $x0 |
| |
| ; Same as eq case, but we should get a TBZW instead. |
| |
| %copy:gpr(s64) = COPY $x0 |
| %bit:gpr(s64) = G_CONSTANT i64 8 |
| %zero:gpr(s64) = G_CONSTANT i64 0 |
| %fold_cst:gpr(s64) = G_CONSTANT i64 8 |
| %fold_me:gpr(s64) = G_XOR %copy, %fold_cst |
| %and:gpr(s64) = G_AND %fold_me, %bit |
| %cmp:gpr(s32) = G_ICMP intpred(ne), %and(s64), %zero |
| %cmp_trunc:gpr(s1) = G_TRUNC %cmp(s32) |
| G_BRCOND %cmp_trunc(s1), %bb.1 |
| G_BR %bb.0 |
| bb.1: |
| RET_ReallyLR |
| ... |
| --- |
| name: dont_flip_eq |
| alignment: 4 |
| legalized: true |
| regBankSelected: true |
| body: | |
| ; CHECK-LABEL: name: dont_flip_eq |
| ; CHECK: bb.0: |
| ; CHECK: successors: %bb.0(0x40000000), %bb.1(0x40000000) |
| ; CHECK: %copy:gpr64all = COPY $x0 |
| ; CHECK: [[COPY:%[0-9]+]]:gpr32all = COPY %copy.sub_32 |
| ; CHECK: [[COPY1:%[0-9]+]]:gpr32 = COPY [[COPY]] |
| ; CHECK: TBZW [[COPY1]], 3, %bb.1 |
| ; CHECK: B %bb.0 |
| ; CHECK: bb.1: |
| ; CHECK: RET_ReallyLR |
| bb.0: |
| successors: %bb.0, %bb.1 |
| liveins: $x0 |
| %copy:gpr(s64) = COPY $x0 |
| |
| ; Check bit 3. |
| %bit:gpr(s64) = G_CONSTANT i64 8 |
| %zero:gpr(s64) = G_CONSTANT i64 0 |
| |
| ; 7 does not have the third bit set. |
| %fold_cst:gpr(s64) = G_CONSTANT i64 7 |
| |
| ; This only has the third bit set if %copy does. So, to walk through this, |
| ; we should have a TBZW on %copy. |
| %fold_me:gpr(s64) = G_XOR %fold_cst, %copy |
| |
| %and:gpr(s64) = G_AND %fold_me, %bit |
| %cmp:gpr(s32) = G_ICMP intpred(eq), %and(s64), %zero |
| %cmp_trunc:gpr(s1) = G_TRUNC %cmp(s32) |
| G_BRCOND %cmp_trunc(s1), %bb.1 |
| G_BR %bb.0 |
| bb.1: |
| RET_ReallyLR |
| ... |
| --- |
| name: dont_flip_eq_zext |
| alignment: 4 |
| legalized: true |
| regBankSelected: true |
| tracksRegLiveness: true |
| body: | |
| ; CHECK-LABEL: name: dont_flip_eq_zext |
| ; CHECK: bb.0: |
| ; CHECK: successors: %bb.0(0x40000000), %bb.1(0x40000000) |
| ; CHECK: [[COPY:%[0-9]+]]:gpr32 = COPY $wzr |
| ; CHECK: [[SUBREG_TO_REG:%[0-9]+]]:gpr64all = SUBREG_TO_REG 0, [[COPY]], %subreg.sub_32 |
| ; CHECK: [[COPY1:%[0-9]+]]:gpr64 = COPY [[SUBREG_TO_REG]] |
| ; CHECK: TBNZX [[COPY1]], 63, %bb.1 |
| ; CHECK: B %bb.0 |
| ; CHECK: bb.1: |
| ; CHECK: RET_ReallyLR |
| bb.0: |
| successors: %bb.0(0x40000000), %bb.1(0x40000000) |
| |
| %1:gpr(s32) = G_CONSTANT i32 0 |
| %3:gpr(s32) = G_CONSTANT i32 -1 |
| %4:gpr(s32) = G_XOR %1, %3 |
| %5:gpr(s64) = G_ZEXT %4(s32) |
| %15:gpr(s64) = G_CONSTANT i64 0 |
| %13:gpr(s32) = G_ICMP intpred(slt), %5(s64), %15 |
| %7:gpr(s1) = G_TRUNC %13(s32) |
| G_BRCOND %7(s1), %bb.1 |
| G_BR %bb.0 |
| bb.1: |
| RET_ReallyLR |
| ... |
| --- |
| name: dont_flip_ne |
| alignment: 4 |
| legalized: true |
| regBankSelected: true |
| body: | |
| ; CHECK-LABEL: name: dont_flip_ne |
| ; CHECK: bb.0: |
| ; CHECK: successors: %bb.0(0x40000000), %bb.1(0x40000000) |
| ; CHECK: %copy:gpr64all = COPY $x0 |
| ; CHECK: [[COPY:%[0-9]+]]:gpr32all = COPY %copy.sub_32 |
| ; CHECK: [[COPY1:%[0-9]+]]:gpr32 = COPY [[COPY]] |
| ; CHECK: TBNZW [[COPY1]], 3, %bb.1 |
| ; CHECK: B %bb.0 |
| ; CHECK: bb.1: |
| ; CHECK: RET_ReallyLR |
| bb.0: |
| successors: %bb.0, %bb.1 |
| liveins: $x0 |
| |
| ; Same as eq case, but we should get a TBNZW instead. |
| |
| %copy:gpr(s64) = COPY $x0 |
| %bit:gpr(s64) = G_CONSTANT i64 8 |
| %zero:gpr(s64) = G_CONSTANT i64 0 |
| %fold_cst:gpr(s64) = G_CONSTANT i64 7 |
| %fold_me:gpr(s64) = G_XOR %fold_cst, %copy |
| %and:gpr(s64) = G_AND %fold_me, %bit |
| %cmp:gpr(s32) = G_ICMP intpred(ne), %and(s64), %zero |
| %cmp_trunc:gpr(s1) = G_TRUNC %cmp(s32) |
| G_BRCOND %cmp_trunc(s1), %bb.1 |
| G_BR %bb.0 |
| bb.1: |
| RET_ReallyLR |
| ... |
| --- |
| name: xor_chain |
| alignment: 4 |
| legalized: true |
| regBankSelected: true |
| body: | |
| ; CHECK-LABEL: name: xor_chain |
| ; CHECK: bb.0: |
| ; CHECK: successors: %bb.0(0x40000000), %bb.1(0x40000000) |
| ; CHECK: %copy:gpr64all = COPY $x0 |
| ; CHECK: [[COPY:%[0-9]+]]:gpr32all = COPY %copy.sub_32 |
| ; CHECK: [[COPY1:%[0-9]+]]:gpr32 = COPY [[COPY]] |
| ; CHECK: TBZW [[COPY1]], 3, %bb.1 |
| ; CHECK: B %bb.0 |
| ; CHECK: bb.1: |
| ; CHECK: RET_ReallyLR |
| bb.0: |
| successors: %bb.0, %bb.1 |
| liveins: $x0 |
| %copy:gpr(s64) = COPY $x0 |
| %bit:gpr(s64) = G_CONSTANT i64 8 |
| %zero:gpr(s64) = G_CONSTANT i64 0 |
| %fold_cst:gpr(s64) = G_CONSTANT i64 8 |
| |
| ; The G_XORs cancel each other out, so we should get a TBZW. |
| %xor1:gpr(s64) = G_XOR %copy, %fold_cst |
| %xor2:gpr(s64) = G_XOR %xor1, %fold_cst |
| |
| %and:gpr(s64) = G_AND %xor2, %bit |
| %cmp:gpr(s32) = G_ICMP intpred(eq), %and(s64), %zero |
| %cmp_trunc:gpr(s1) = G_TRUNC %cmp(s32) |
| G_BRCOND %cmp_trunc(s1), %bb.1 |
| G_BR %bb.0 |
| bb.1: |
| RET_ReallyLR |