| # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py |
| # RUN: llc -O0 -mtriple arm64-- -run-pass=regbankselect %s -o - | FileCheck %s |
| |
| # Check that we correctly assign register banks based off of instructions which |
| # only use or only define FPRs. |
| # |
| # For example, G_SITOFP may take in a GPR, but only ever produces values on FPRs. |
| # Some instructions can have inputs/outputs on either FPRs or GPRs. If one of |
| # those instructions takes in the result of a G_SITOFP as a source, we should |
| # put that source on a FPR. |
| # |
| # Similarly, G_FPTOSI can only take in a value on a FPR. So, if the result of |
| # an instruction is consumed by a G_FPTOSI, we should put the instruction on |
| # FPRs. |
| |
| --- |
| name: load_only_uses_fp |
| legalized: true |
| tracksRegLiveness: true |
| body: | |
| bb.0: |
| liveins: $x0 |
| ; CHECK-LABEL: name: load_only_uses_fp |
| ; CHECK: liveins: $x0 |
| ; CHECK: [[COPY:%[0-9]+]]:gpr(p0) = COPY $x0 |
| ; CHECK: [[C:%[0-9]+]]:fpr(s32) = G_FCONSTANT float 2.000000e+00 |
| ; CHECK: [[LOAD:%[0-9]+]]:fpr(s32) = G_LOAD [[COPY]](p0) :: (load (s32)) |
| ; CHECK: [[FCMP:%[0-9]+]]:gpr(s32) = G_FCMP floatpred(uno), [[C]](s32), [[LOAD]] |
| ; CHECK: $w0 = COPY [[FCMP]](s32) |
| ; CHECK: RET_ReallyLR implicit $w0 |
| %0:_(p0) = COPY $x0 |
| %1:_(s32) = G_FCONSTANT float 2.0 |
| %2:_(s32) = G_LOAD %0 :: (load (s32)) |
| %3:_(s32) = G_FCMP floatpred(uno), %1, %2 |
| $w0 = COPY %3(s32) |
| RET_ReallyLR implicit $w0 |
| ... |
| --- |
| name: unmerge_only_uses_fp |
| |
| legalized: true |
| tracksRegLiveness: true |
| body: | |
| bb.0: |
| liveins: $x0 |
| ; CHECK-LABEL: name: unmerge_only_uses_fp |
| ; CHECK: liveins: $x0 |
| ; CHECK: [[COPY:%[0-9]+]]:gpr(s64) = COPY $x0 |
| ; CHECK: [[COPY1:%[0-9]+]]:fpr(s64) = COPY [[COPY]](s64) |
| ; CHECK: [[UV:%[0-9]+]]:fpr(s32), [[UV1:%[0-9]+]]:fpr(s32) = G_UNMERGE_VALUES [[COPY1]](s64) |
| ; CHECK: [[FCMP:%[0-9]+]]:gpr(s32) = G_FCMP floatpred(uno), [[UV]](s32), [[UV1]] |
| ; CHECK: $w0 = COPY [[FCMP]](s32) |
| ; CHECK: RET_ReallyLR implicit $w0 |
| %0:_(s64) = COPY $x0 |
| %1:_(s32), %2:_(s32) = G_UNMERGE_VALUES %0(s64) |
| %3:_(s32) = G_FCMP floatpred(uno), %1, %2 |
| $w0 = COPY %3(s32) |
| RET_ReallyLR implicit $w0 |
| |
| ... |
| --- |
| name: store_defined_by_fp |
| legalized: true |
| tracksRegLiveness: true |
| body: | |
| bb.0: |
| liveins: $x0, $w1 |
| ; CHECK-LABEL: name: store_defined_by_fp |
| ; CHECK: liveins: $x0, $w1 |
| ; CHECK: [[COPY:%[0-9]+]]:gpr(p0) = COPY $x0 |
| ; CHECK: [[COPY1:%[0-9]+]]:gpr(s32) = COPY $w1 |
| ; CHECK: [[SITOFP:%[0-9]+]]:fpr(s32) = G_SITOFP [[COPY1]](s32) |
| ; CHECK: G_STORE [[SITOFP]](s32), [[COPY]](p0) :: (store (s32)) |
| %0:_(p0) = COPY $x0 |
| %1:_(s32) = COPY $w1 |
| %2:_(s32) = G_SITOFP %1 |
| G_STORE %2, %0 :: (store (s32)) |
| |
| ... |
| --- |
| name: select_defined_by_fp_using_fp |
| legalized: true |
| tracksRegLiveness: true |
| body: | |
| bb.0: |
| liveins: $w0, $w1, $w2 |
| ; CHECK-LABEL: name: select_defined_by_fp_using_fp |
| ; CHECK: liveins: $w0, $w1, $w2 |
| ; CHECK: [[COPY:%[0-9]+]]:gpr(s32) = COPY $w0 |
| ; CHECK: [[TRUNC:%[0-9]+]]:gpr(s1) = G_TRUNC %2(s32) |
| ; CHECK: [[COPY1:%[0-9]+]]:gpr(s32) = COPY $w1 |
| ; CHECK: [[COPY2:%[0-9]+]]:gpr(s32) = COPY $w2 |
| ; CHECK: [[SITOFP:%[0-9]+]]:fpr(s32) = G_SITOFP [[COPY1]](s32) |
| ; CHECK: [[COPY3:%[0-9]+]]:fpr(s32) = COPY [[COPY2]](s32) |
| ; CHECK: [[SELECT:%[0-9]+]]:fpr(s32) = G_SELECT [[TRUNC]](s1), [[COPY3]], [[SITOFP]] |
| ; CHECK: [[FPTOSI:%[0-9]+]]:gpr(s32) = G_FPTOSI [[SELECT]](s32) |
| %0:_(s32) = COPY $w0 |
| %1:_(s1) = G_TRUNC %3(s32) |
| %2:_(s32) = COPY $w1 |
| %3:_(s32) = COPY $w2 |
| %4:_(s32) = G_SITOFP %2 |
| %6:_(s32) = G_SELECT %1(s1), %3, %4 |
| %8:_(s32) = G_FPTOSI %6 |
| |
| ... |
| --- |
| name: load_used_by_phi_fpr |
| legalized: true |
| tracksRegLiveness: true |
| body: | |
| ; CHECK-LABEL: name: load_used_by_phi_fpr |
| ; CHECK: bb.0: |
| ; CHECK: successors: %bb.1(0x40000000), %bb.2(0x40000000) |
| ; CHECK: liveins: $x0, $s0, $s1, $w0, $w1 |
| ; CHECK: %cond_wide:gpr(s32) = COPY $w0 |
| ; CHECK: %cond:gpr(s1) = G_TRUNC %cond_wide(s32) |
| ; CHECK: %fpr_copy:fpr(s32) = COPY $s0 |
| ; CHECK: %ptr:gpr(p0) = COPY $x0 |
| ; CHECK: G_BRCOND %cond(s1), %bb.1 |
| ; CHECK: G_BR %bb.2 |
| ; CHECK: bb.1: |
| ; CHECK: successors: %bb.2(0x80000000) |
| ; CHECK: %load:fpr(s32) = G_LOAD %ptr(p0) :: (load (s32)) |
| ; CHECK: G_BR %bb.2 |
| ; CHECK: bb.2: |
| ; CHECK: %phi:fpr(s32) = G_PHI %fpr_copy(s32), %bb.0, %load(s32), %bb.1 |
| ; CHECK: $s0 = COPY %phi(s32) |
| ; CHECK: RET_ReallyLR implicit $s0 |
| bb.0: |
| successors: %bb.1(0x40000000), %bb.2(0x40000000) |
| liveins: $x0, $s0, $s1, $w0, $w1 |
| %cond_wide:_(s32) = COPY $w0 |
| %cond:_(s1) = G_TRUNC %cond_wide(s32) |
| %fpr_copy:_(s32) = COPY $s0 |
| %ptr:_(p0) = COPY $x0 |
| G_BRCOND %cond(s1), %bb.1 |
| G_BR %bb.2 |
| bb.1: |
| successors: %bb.2 |
| %load:_(s32) = G_LOAD %ptr(p0) :: (load (s32)) |
| G_BR %bb.2 |
| bb.2: |
| %phi:_(s32) = G_PHI %fpr_copy(s32), %bb.0, %load(s32), %bb.1 |
| $s0 = COPY %phi(s32) |
| RET_ReallyLR implicit $s0 |
| |
| ... |
| --- |
| name: load_used_by_phi_gpr |
| legalized: true |
| tracksRegLiveness: true |
| body: | |
| ; CHECK-LABEL: name: load_used_by_phi_gpr |
| ; CHECK: bb.0: |
| ; CHECK: successors: %bb.1(0x40000000), %bb.2(0x40000000) |
| ; CHECK: liveins: $x0, $s0, $s1, $w0, $w1 |
| ; CHECK: %cond_wide:gpr(s32) = COPY $w0 |
| ; CHECK: %cond:gpr(s1) = G_TRUNC %cond_wide(s32) |
| ; CHECK: %gpr_copy:gpr(s32) = COPY $w1 |
| ; CHECK: %ptr:gpr(p0) = COPY $x0 |
| ; CHECK: G_BRCOND %cond(s1), %bb.1 |
| ; CHECK: G_BR %bb.2 |
| ; CHECK: bb.1: |
| ; CHECK: successors: %bb.2(0x80000000) |
| ; CHECK: %load:gpr(s32) = G_LOAD %ptr(p0) :: (load (s32)) |
| ; CHECK: G_BR %bb.2 |
| ; CHECK: bb.2: |
| ; CHECK: %phi:gpr(s32) = G_PHI %gpr_copy(s32), %bb.0, %load(s32), %bb.1 |
| ; CHECK: $s0 = COPY %phi(s32) |
| ; CHECK: RET_ReallyLR implicit $s0 |
| bb.0: |
| successors: %bb.1(0x40000000), %bb.2(0x40000000) |
| liveins: $x0, $s0, $s1, $w0, $w1 |
| %cond_wide:_(s32) = COPY $w0 |
| %cond:_(s1) = G_TRUNC %cond_wide(s32) |
| %gpr_copy:_(s32) = COPY $w1 |
| %ptr:_(p0) = COPY $x0 |
| G_BRCOND %cond(s1), %bb.1 |
| G_BR %bb.2 |
| bb.1: |
| successors: %bb.2 |
| %load:_(s32) = G_LOAD %ptr(p0) :: (load (s32)) |
| G_BR %bb.2 |
| bb.2: |
| %phi:_(s32) = G_PHI %gpr_copy(s32), %bb.0, %load(s32), %bb.1 |
| $s0 = COPY %phi(s32) |
| RET_ReallyLR implicit $s0 |
| |
| ... |
| --- |
| name: select_used_by_phi_fpr |
| legalized: true |
| tracksRegLiveness: true |
| body: | |
| ; CHECK-LABEL: name: select_used_by_phi_fpr |
| ; CHECK: bb.0: |
| ; CHECK: successors: %bb.1(0x40000000), %bb.2(0x40000000) |
| ; CHECK: liveins: $s0, $s1, $w0, $w1 |
| ; CHECK: %cond_wide:gpr(s32) = COPY $w0 |
| ; CHECK: %cond:gpr(s1) = G_TRUNC %cond_wide(s32) |
| ; CHECK: %fpr_copy:fpr(s32) = COPY $s0 |
| ; CHECK: %gpr_copy:gpr(s32) = COPY $w1 |
| ; CHECK: G_BRCOND %cond(s1), %bb.1 |
| ; CHECK: G_BR %bb.2 |
| ; CHECK: bb.1: |
| ; CHECK: successors: %bb.2(0x80000000) |
| ; CHECK: [[COPY:%[0-9]+]]:fpr(s32) = COPY %gpr_copy(s32) |
| ; CHECK: %select:fpr(s32) = G_SELECT %cond(s1), %fpr_copy, [[COPY]] |
| ; CHECK: G_BR %bb.2 |
| ; CHECK: bb.2: |
| ; CHECK: %phi:fpr(s32) = G_PHI %fpr_copy(s32), %bb.0, %select(s32), %bb.1 |
| ; CHECK: $w0 = COPY %phi(s32) |
| ; CHECK: RET_ReallyLR implicit $w0 |
| ; The G_SELECT and G_PHI should end up with the same register bank. |
| ; |
| bb.0: |
| successors: %bb.1(0x40000000), %bb.2(0x40000000) |
| liveins: $s0, $s1, $w0, $w1 |
| %cond_wide:_(s32) = COPY $w0 |
| %cond:_(s1) = G_TRUNC %cond_wide(s32) |
| %fpr_copy:_(s32) = COPY $s0 |
| %gpr_copy:_(s32) = COPY $w1 |
| G_BRCOND %cond(s1), %bb.1 |
| G_BR %bb.2 |
| bb.1: |
| successors: %bb.2 |
| %select:_(s32) = G_SELECT %cond(s1), %fpr_copy, %gpr_copy |
| G_BR %bb.2 |
| bb.2: |
| %phi:_(s32) = G_PHI %fpr_copy(s32), %bb.0, %select(s32), %bb.1 |
| $w0 = COPY %phi(s32) |
| RET_ReallyLR implicit $w0 |
| |
| ... |
| --- |
| name: select_used_by_phi_gpr |
| legalized: true |
| tracksRegLiveness: true |
| body: | |
| ; CHECK-LABEL: name: select_used_by_phi_gpr |
| ; CHECK: bb.0: |
| ; CHECK: successors: %bb.1(0x40000000), %bb.2(0x40000000) |
| ; CHECK: liveins: $s0, $s1, $w0, $w1 |
| ; CHECK: %cond_wide:gpr(s32) = COPY $w0 |
| ; CHECK: %cond:gpr(s1) = G_TRUNC %cond_wide(s32) |
| ; CHECK: %fpr_copy:fpr(s32) = COPY $s0 |
| ; CHECK: %gpr_copy:gpr(s32) = COPY $w1 |
| ; CHECK: G_BRCOND %cond(s1), %bb.1 |
| ; CHECK: G_BR %bb.2 |
| ; CHECK: bb.1: |
| ; CHECK: successors: %bb.2(0x80000000) |
| ; CHECK: [[COPY:%[0-9]+]]:gpr(s32) = COPY %fpr_copy(s32) |
| ; CHECK: %select:gpr(s32) = G_SELECT %cond(s1), [[COPY]], %gpr_copy |
| ; CHECK: G_BR %bb.2 |
| ; CHECK: bb.2: |
| ; CHECK: %phi:gpr(s32) = G_PHI %gpr_copy(s32), %bb.0, %select(s32), %bb.1 |
| ; CHECK: $s0 = COPY %phi(s32) |
| ; CHECK: RET_ReallyLR implicit $s0 |
| ; The G_SELECT and G_PHI should end up with the same register bank. |
| ; |
| bb.0: |
| successors: %bb.1(0x40000000), %bb.2(0x40000000) |
| liveins: $s0, $s1, $w0, $w1 |
| %cond_wide:_(s32) = COPY $w0 |
| %cond:_(s1) = G_TRUNC %cond_wide(s32) |
| %fpr_copy:_(s32) = COPY $s0 |
| %gpr_copy:_(s32) = COPY $w1 |
| G_BRCOND %cond(s1), %bb.1 |
| G_BR %bb.2 |
| bb.1: |
| successors: %bb.2 |
| %select:_(s32) = G_SELECT %cond(s1), %fpr_copy, %gpr_copy |
| G_BR %bb.2 |
| bb.2: |
| %phi:_(s32) = G_PHI %gpr_copy(s32), %bb.0, %select(s32), %bb.1 |
| $s0 = COPY %phi(s32) |
| RET_ReallyLR implicit $s0 |
| |
| |
| ... |
| --- |
| name: unmerge_used_by_phi_fpr |
| legalized: true |
| tracksRegLiveness: true |
| body: | |
| ; CHECK-LABEL: name: unmerge_used_by_phi_fpr |
| ; CHECK: bb.0: |
| ; CHECK: successors: %bb.1(0x40000000), %bb.2(0x40000000) |
| ; CHECK: liveins: $x0, $s0, $s1, $w0, $w1 |
| ; CHECK: %cond_wide:gpr(s32) = COPY $w0 |
| ; CHECK: %cond:gpr(s1) = G_TRUNC %cond_wide(s32) |
| ; CHECK: %fpr_copy:fpr(s32) = COPY $s0 |
| ; CHECK: %unmerge_src:gpr(s64) = COPY $x0 |
| ; CHECK: G_BRCOND %cond(s1), %bb.1 |
| ; CHECK: G_BR %bb.2 |
| ; CHECK: bb.1: |
| ; CHECK: successors: %bb.2(0x80000000) |
| ; CHECK: [[COPY:%[0-9]+]]:fpr(s64) = COPY %unmerge_src(s64) |
| ; CHECK: %unmerge_1:fpr(s32), %unmerge_2:fpr(s32) = G_UNMERGE_VALUES [[COPY]](s64) |
| ; CHECK: G_BR %bb.2 |
| ; CHECK: bb.2: |
| ; CHECK: %phi:fpr(s32) = G_PHI %fpr_copy(s32), %bb.0, %unmerge_1(s32), %bb.1 |
| ; CHECK: $s0 = COPY %phi(s32) |
| ; CHECK: RET_ReallyLR implicit $s0 |
| bb.0: |
| successors: %bb.1(0x40000000), %bb.2(0x40000000) |
| liveins: $x0, $s0, $s1, $w0, $w1 |
| %cond_wide:_(s32) = COPY $w0 |
| %cond:_(s1) = G_TRUNC %cond_wide(s32) |
| %fpr_copy:_(s32) = COPY $s0 |
| %unmerge_src:_(s64) = COPY $x0 |
| G_BRCOND %cond(s1), %bb.1 |
| G_BR %bb.2 |
| bb.1: |
| successors: %bb.2 |
| %unmerge_1:_(s32), %unmerge_2:_(s32) = G_UNMERGE_VALUES %unmerge_src(s64) |
| G_BR %bb.2 |
| bb.2: |
| %phi:_(s32) = G_PHI %fpr_copy(s32), %bb.0, %unmerge_1(s32), %bb.1 |
| $s0 = COPY %phi(s32) |
| RET_ReallyLR implicit $s0 |
| |
| ... |
| --- |
| name: unmerge_used_by_phi_gpr |
| legalized: true |
| tracksRegLiveness: true |
| body: | |
| ; CHECK-LABEL: name: unmerge_used_by_phi_gpr |
| ; CHECK: bb.0: |
| ; CHECK: successors: %bb.1(0x40000000), %bb.2(0x40000000) |
| ; CHECK: liveins: $x0, $s0, $s1, $w0, $w1 |
| ; CHECK: %cond_wide:gpr(s32) = COPY $w0 |
| ; CHECK: %cond:gpr(s1) = G_TRUNC %cond_wide(s32) |
| ; CHECK: %gpr_copy:gpr(s32) = COPY $w1 |
| ; CHECK: %unmerge_src:gpr(s64) = COPY $x0 |
| ; CHECK: G_BRCOND %cond(s1), %bb.1 |
| ; CHECK: G_BR %bb.2 |
| ; CHECK: bb.1: |
| ; CHECK: successors: %bb.2(0x80000000) |
| ; CHECK: %unmerge_1:gpr(s32), %unmerge_2:gpr(s32) = G_UNMERGE_VALUES %unmerge_src(s64) |
| ; CHECK: G_BR %bb.2 |
| ; CHECK: bb.2: |
| ; CHECK: %phi:gpr(s32) = G_PHI %gpr_copy(s32), %bb.0, %unmerge_1(s32), %bb.1 |
| ; CHECK: $s0 = COPY %phi(s32) |
| ; CHECK: RET_ReallyLR implicit $s0 |
| bb.0: |
| successors: %bb.1(0x40000000), %bb.2(0x40000000) |
| liveins: $x0, $s0, $s1, $w0, $w1 |
| %cond_wide:_(s32) = COPY $w0 |
| %cond:_(s1) = G_TRUNC %cond_wide(s32) |
| %gpr_copy:_(s32) = COPY $w1 |
| %unmerge_src:_(s64) = COPY $x0 |
| G_BRCOND %cond(s1), %bb.1 |
| G_BR %bb.2 |
| bb.1: |
| successors: %bb.2 |
| %unmerge_1:_(s32), %unmerge_2:_(s32) = G_UNMERGE_VALUES %unmerge_src(s64) |
| G_BR %bb.2 |
| bb.2: |
| %phi:_(s32) = G_PHI %gpr_copy(s32), %bb.0, %unmerge_1(s32), %bb.1 |
| $s0 = COPY %phi(s32) |
| RET_ReallyLR implicit $s0 |
| |
| ... |
| --- |
| name: load_used_by_sitofp |
| legalized: true |
| tracksRegLiveness: true |
| body: | |
| bb.0: |
| liveins: $x0 |
| ; The load should be assigned an fpr bank because it's used by the sitofp. |
| ; The sitofp should assign both src and dest to FPR, resulting in no copies. |
| ; CHECK-LABEL: name: load_used_by_sitofp |
| ; CHECK: liveins: $x0 |
| ; CHECK: [[COPY:%[0-9]+]]:gpr(p0) = COPY $x0 |
| ; CHECK: [[LOAD:%[0-9]+]]:fpr(s32) = G_LOAD [[COPY]](p0) :: (load (s32)) |
| ; CHECK: [[SITOFP:%[0-9]+]]:fpr(s32) = G_SITOFP [[LOAD]](s32) |
| ; CHECK: $s0 = COPY [[SITOFP]](s32) |
| ; CHECK: RET_ReallyLR implicit $s0 |
| %0:_(p0) = COPY $x0 |
| %1:_(s32) = G_LOAD %0 :: (load (s32)) |
| %2:_(s32) = G_SITOFP %1:_(s32) |
| $s0 = COPY %2(s32) |
| RET_ReallyLR implicit $s0 |
| ... |
| --- |
| name: load_used_by_uitofp |
| legalized: true |
| tracksRegLiveness: true |
| body: | |
| bb.0: |
| liveins: $x0 |
| ; CHECK-LABEL: name: load_used_by_uitofp |
| ; CHECK: liveins: $x0 |
| ; CHECK: [[COPY:%[0-9]+]]:gpr(p0) = COPY $x0 |
| ; CHECK: [[LOAD:%[0-9]+]]:fpr(s32) = G_LOAD [[COPY]](p0) :: (load (s32)) |
| ; CHECK: [[UITOFP:%[0-9]+]]:fpr(s32) = G_UITOFP [[LOAD]](s32) |
| ; CHECK: $s0 = COPY [[UITOFP]](s32) |
| ; CHECK: RET_ReallyLR implicit $s0 |
| %0:_(p0) = COPY $x0 |
| %1:_(s32) = G_LOAD %0 :: (load (s32)) |
| %2:_(s32) = G_UITOFP %1:_(s32) |
| $s0 = COPY %2(s32) |
| RET_ReallyLR implicit $s0 |
| ... |