| # RUN: llc -mtriple arm-- -run-pass=legalizer %s -o - | FileCheck %s |
| # RUN: llc -mtriple thumb-- -mattr=+v6t2 -run-pass=legalizer %s -o - | FileCheck %s |
| --- | |
| define void @test_brcond() { ret void } |
| |
| define void @test_phi_s32() { ret void } |
| define void @test_phi_p0() { ret void } |
| define void @test_phi_s8() { ret void } |
| ... |
| --- |
| name: test_brcond |
| # CHECK-LABEL: name: test_brcond |
| legalized: false |
| # CHECK: legalized: true |
| regBankSelected: false |
| selected: false |
| tracksRegLiveness: true |
| registers: |
| - { id: 0, class: _ } |
| - { id: 1, class: _ } |
| - { id: 2, class: _ } |
| body: | |
| bb.0: |
| successors: %bb.1(0x40000000), %bb.2(0x40000000) |
| liveins: $r0, $r1 |
| |
| %0(s32) = COPY $r0 |
| %1(s32) = COPY $r1 |
| %2(s1) = G_ICMP intpred(sgt), %0(s32), %1 |
| G_BRCOND %2(s1), %bb.1 |
| ; G_BRCOND with s1 is legal, so we should find it unchanged in the output |
| ; CHECK: G_BRCOND {{%[0-9]+}}(s1), %bb.1 |
| G_BR %bb.2 |
| |
| bb.1: |
| $r0 = COPY %1(s32) |
| BX_RET 14, $noreg, implicit $r0 |
| |
| bb.2: |
| $r0 = COPY %0(s32) |
| BX_RET 14, $noreg, implicit $r0 |
| |
| ... |
| --- |
| name: test_phi_s32 |
| # CHECK-LABEL: name: test_phi_s32 |
| legalized: false |
| # CHECK: legalized: true |
| regBankSelected: false |
| selected: false |
| tracksRegLiveness: true |
| registers: |
| - { id: 0, class: _ } |
| - { id: 1, class: _ } |
| - { id: 2, class: _ } |
| - { id: 3, class: _ } |
| - { id: 4, class: _ } |
| body: | |
| bb.0: |
| liveins: $r0, $r1, $r2 |
| |
| %0(s32) = COPY $r0 |
| %1(s1) = G_TRUNC %0(s32) |
| |
| %2(s32) = COPY $r1 |
| %3(s32) = COPY $r2 |
| |
| G_BRCOND %1(s1), %bb.1 |
| G_BR %bb.2 |
| |
| bb.1: |
| G_BR %bb.2 |
| |
| bb.2: |
| %4(s32) = G_PHI %2(s32), %bb.0, %3(s32), %bb.1 |
| ; G_PHI with s32 is legal, so we should find it unchanged in the output |
| ; CHECK: G_PHI {{%[0-9]+}}(s32), %bb.0, {{%[0-9]+}}(s32), %bb.1 |
| $r0 = COPY %4(s32) |
| BX_RET 14, $noreg, implicit $r0 |
| ... |
| --- |
| name: test_phi_p0 |
| # CHECK-LABEL: name: test_phi_p0 |
| legalized: false |
| # CHECK: legalized: true |
| regBankSelected: false |
| selected: false |
| tracksRegLiveness: true |
| registers: |
| - { id: 0, class: _ } |
| - { id: 1, class: _ } |
| - { id: 2, class: _ } |
| - { id: 3, class: _ } |
| - { id: 4, class: _ } |
| body: | |
| bb.0: |
| liveins: $r0, $r1, $r2 |
| |
| %0(s32) = COPY $r0 |
| %1(s1) = G_TRUNC %0(s32) |
| |
| %2(p0) = COPY $r1 |
| %3(p0) = COPY $r2 |
| |
| G_BRCOND %1(s1), %bb.1 |
| G_BR %bb.2 |
| |
| bb.1: |
| G_BR %bb.2 |
| |
| bb.2: |
| %4(p0) = G_PHI %2(p0), %bb.0, %3(p0), %bb.1 |
| ; G_PHI with p0 is legal, so we should find it unchanged in the output |
| ; CHECK: G_PHI {{%[0-9]+}}(p0), %bb.0, {{%[0-9]+}}(p0), %bb.1 |
| $r0 = COPY %4(p0) |
| BX_RET 14, $noreg, implicit $r0 |
| ... |
| --- |
| name: test_phi_s8 |
| # CHECK-LABEL: name: test_phi_s8 |
| legalized: false |
| # CHECK: legalized: true |
| regBankSelected: false |
| selected: false |
| tracksRegLiveness: true |
| registers: |
| - { id: 0, class: _ } |
| - { id: 1, class: _ } |
| - { id: 2, class: _ } |
| - { id: 3, class: _ } |
| - { id: 4, class: _ } |
| - { id: 5, class: _ } |
| - { id: 6, class: _ } |
| - { id: 7, class: _ } |
| body: | |
| bb.0: |
| liveins: $r0, $r1, $r2 |
| |
| %0(s32) = COPY $r0 |
| %1(s1) = G_TRUNC %0(s32) |
| |
| %2(s32) = COPY $r1 |
| %3(s8) = G_TRUNC %2(s32) |
| ; CHECK: [[R1:%[0-9]+]]:_(s32) = COPY $r1 |
| |
| %4(s32) = COPY $r2 |
| %5(s8) = G_TRUNC %4(s32) |
| ; CHECK: [[R2:%[0-9]+]]:_(s32) = COPY $r2 |
| |
| G_BRCOND %1(s1), %bb.1 |
| G_BR %bb.2 |
| |
| bb.1: |
| G_BR %bb.2 |
| |
| bb.2: |
| %6(s8) = G_PHI %3(s8), %bb.0, %5(s8), %bb.1 |
| ; G_PHI with s8 should widen, and all the truncs and exts should be combined |
| ; away into a bunch of redundant copies |
| ; CHECK: [[V:%[0-9]+]]:_(s32) = G_PHI [[R1]](s32), %bb.0, [[R2]](s32), %bb.1 |
| |
| %7(s32) = G_ANYEXT %6(s8) |
| $r0 = COPY %7(s32) |
| ; CHECK: $r0 = COPY [[V]](s32) |
| BX_RET 14, $noreg, implicit $r0 |
| ... |