blob: f436c3774c869cd47a1c1bd9f0e539bcd2e03969 [file] [log] [blame]
# RUN: llc -mtriple arm-linux-gnueabi -mattr=+hwdiv-arm -global-isel -run-pass=legalizer %s -o - | FileCheck %s -check-prefixes=CHECK,HWDIV
# RUN: llc -mtriple arm-linux-gnueabi -mattr=-hwdiv-arm -global-isel -run-pass=legalizer %s -o - | FileCheck %s -check-prefixes=CHECK,SOFT,SOFT-AEABI
# RUN: llc -mtriple arm-linux-gnu -mattr=+hwdiv-arm -global-isel -run-pass=legalizer %s -o - | FileCheck %s -check-prefixes=CHECK,HWDIV
# RUN: llc -mtriple arm-linux-gnu -mattr=-hwdiv-arm -global-isel -run-pass=legalizer %s -o - | FileCheck %s -check-prefixes=CHECK,SOFT,SOFT-DEFAULT
--- |
define void @test_sdiv_i32() { ret void }
define void @test_udiv_i32() { ret void }
define void @test_sdiv_i16() { ret void }
define void @test_udiv_i16() { ret void }
define void @test_sdiv_i8() { ret void }
define void @test_udiv_i8() { ret void }
define void @test_srem_i32() { ret void }
define void @test_urem_i32() { ret void }
define void @test_srem_i16() { ret void }
define void @test_urem_i16() { ret void }
define void @test_srem_i8() { ret void }
define void @test_urem_i8() { ret void }
...
---
name: test_sdiv_i32
# CHECK-LABEL: name: test_sdiv_i32
legalized: false
# CHECK: legalized: true
regBankSelected: false
selected: false
tracksRegLiveness: true
registers:
- { id: 0, class: _ }
- { id: 1, class: _ }
- { id: 2, class: _ }
body: |
bb.0:
liveins: %r0, %r1
; CHECK-DAG: [[X:%[0-9]+]](s32) = COPY %r0
; CHECK-DAG: [[Y:%[0-9]+]](s32) = COPY %r1
%0(s32) = COPY %r0
%1(s32) = COPY %r1
; HWDIV: [[R:%[0-9]+]](s32) = G_SDIV [[X]], [[Y]]
; SOFT-NOT: G_SDIV
; SOFT: ADJCALLSTACKDOWN
; SOFT-DAG: %r0 = COPY [[X]]
; SOFT-DAG: %r1 = COPY [[Y]]
; SOFT-AEABI: BLX $__aeabi_idiv, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
; SOFT-AEABI: [[R:%[0-9]+]](s32) = COPY %r0
; SOFT-DEFAULT: BLX $__divsi3, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
; SOFT-DEFAULT: [[R:%[0-9]+]](s32) = COPY %r0
; SOFT: ADJCALLSTACKUP
; SOFT-NOT: G_SDIV
%2(s32) = G_SDIV %0, %1
; CHECK: %r0 = COPY [[R]]
%r0 = COPY %2(s32)
BX_RET 14, _, implicit %r0
...
---
name: test_udiv_i32
# CHECK-LABEL: name: test_udiv_i32
legalized: false
# CHECK: legalized: true
regBankSelected: false
selected: false
tracksRegLiveness: true
registers:
- { id: 0, class: _ }
- { id: 1, class: _ }
- { id: 2, class: _ }
body: |
bb.0:
liveins: %r0, %r1
; CHECK-DAG: [[X:%[0-9]+]](s32) = COPY %r0
; CHECK-DAG: [[Y:%[0-9]+]](s32) = COPY %r1
%0(s32) = COPY %r0
%1(s32) = COPY %r1
; HWDIV: [[R:%[0-9]+]](s32) = G_UDIV [[X]], [[Y]]
; SOFT-NOT: G_UDIV
; SOFT: ADJCALLSTACKDOWN
; SOFT-DAG: %r0 = COPY [[X]]
; SOFT-DAG: %r1 = COPY [[Y]]
; SOFT-AEABI: BLX $__aeabi_uidiv, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
; SOFT-AEABI: [[R:%[0-9]+]](s32) = COPY %r0
; SOFT-DEFAULT: BLX $__udivsi3, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
; SOFT-DEFAULT: [[R:%[0-9]+]](s32) = COPY %r0
; SOFT: ADJCALLSTACKUP
; SOFT-NOT: G_UDIV
%2(s32) = G_UDIV %0, %1
; CHECK: %r0 = COPY [[R]]
%r0 = COPY %2(s32)
BX_RET 14, _, implicit %r0
...
---
name: test_sdiv_i16
# CHECK-LABEL: name: test_sdiv_i16
legalized: false
# CHECK: legalized: true
regBankSelected: false
selected: false
tracksRegLiveness: true
registers:
- { id: 0, class: _ }
- { id: 1, class: _ }
- { id: 2, class: _ }
body: |
bb.0:
liveins: %r0, %r1
; CHECK-DAG: [[X:%[0-9]+]](s16) = COPY %r0
; CHECK-DAG: [[Y:%[0-9]+]](s16) = COPY %r1
; CHECK-DAG: [[X32:%[0-9]+]](s32) = G_SEXT [[X]](s16)
; CHECK-DAG: [[Y32:%[0-9]+]](s32) = G_SEXT [[Y]](s16)
%0(s16) = COPY %r0
%1(s16) = COPY %r1
; HWDIV: [[R32:%[0-9]+]](s32) = G_SDIV [[X32]], [[Y32]]
; SOFT-NOT: G_SDIV
; SOFT: ADJCALLSTACKDOWN
; SOFT-DAG: %r0 = COPY [[X32]]
; SOFT-DAG: %r1 = COPY [[Y32]]
; SOFT-AEABI: BLX $__aeabi_idiv, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
; SOFT-AEABI: [[R32:%[0-9]+]](s32) = COPY %r0
; SOFT-DEFAULT: BLX $__divsi3, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
; SOFT-DEFAULT: [[R32:%[0-9]+]](s32) = COPY %r0
; SOFT: ADJCALLSTACKUP
; SOFT-NOT: G_SDIV
; CHECK: [[R:%[0-9]+]](s16) = G_TRUNC [[R32]]
; SOFT-NOT: G_SDIV
%2(s16) = G_SDIV %0, %1
; CHECK: %r0 = COPY [[R]]
%r0 = COPY %2(s16)
BX_RET 14, _, implicit %r0
...
---
name: test_udiv_i16
# CHECK-LABEL: name: test_udiv_i16
legalized: false
# CHECK: legalized: true
regBankSelected: false
selected: false
tracksRegLiveness: true
registers:
- { id: 0, class: _ }
- { id: 1, class: _ }
- { id: 2, class: _ }
body: |
bb.0:
liveins: %r0, %r1
; CHECK-DAG: [[X:%[0-9]+]](s16) = COPY %r0
; CHECK-DAG: [[Y:%[0-9]+]](s16) = COPY %r1
; CHECK-DAG: [[X32:%[0-9]+]](s32) = G_ZEXT [[X]](s16)
; CHECK-DAG: [[Y32:%[0-9]+]](s32) = G_ZEXT [[Y]](s16)
%0(s16) = COPY %r0
%1(s16) = COPY %r1
; HWDIV: [[R32:%[0-9]+]](s32) = G_UDIV [[X32]], [[Y32]]
; SOFT-NOT: G_UDIV
; SOFT: ADJCALLSTACKDOWN
; SOFT-DAG: %r0 = COPY [[X32]]
; SOFT-DAG: %r1 = COPY [[Y32]]
; SOFT-AEABI: BLX $__aeabi_uidiv, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
; SOFT-AEABI: [[R32:%[0-9]+]](s32) = COPY %r0
; SOFT-DEFAULT: BLX $__udivsi3, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
; SOFT-DEFAULT: [[R32:%[0-9]+]](s32) = COPY %r0
; SOFT: ADJCALLSTACKUP
; SOFT-NOT: G_UDIV
; CHECK: [[R:%[0-9]+]](s16) = G_TRUNC [[R32]]
; SOFT-NOT: G_UDIV
%2(s16) = G_UDIV %0, %1
; CHECK: %r0 = COPY [[R]]
%r0 = COPY %2(s16)
BX_RET 14, _, implicit %r0
...
---
name: test_sdiv_i8
# CHECK-LABEL: name: test_sdiv_i8
legalized: false
# CHECK: legalized: true
regBankSelected: false
selected: false
tracksRegLiveness: true
registers:
- { id: 0, class: _ }
- { id: 1, class: _ }
- { id: 2, class: _ }
body: |
bb.0:
liveins: %r0, %r1
; CHECK-DAG: [[X:%[0-9]+]](s8) = COPY %r0
; CHECK-DAG: [[Y:%[0-9]+]](s8) = COPY %r1
; CHECK-DAG: [[X32:%[0-9]+]](s32) = G_SEXT [[X]](s8)
; CHECK-DAG: [[Y32:%[0-9]+]](s32) = G_SEXT [[Y]](s8)
%0(s8) = COPY %r0
%1(s8) = COPY %r1
; HWDIV: [[R32:%[0-9]+]](s32) = G_SDIV [[X32]], [[Y32]]
; SOFT-NOT: G_SDIV
; SOFT: ADJCALLSTACKDOWN
; SOFT-DAG: %r0 = COPY [[X32]]
; SOFT-DAG: %r1 = COPY [[Y32]]
; SOFT-AEABI: BLX $__aeabi_idiv, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
; SOFT-AEABI: [[R32:%[0-9]+]](s32) = COPY %r0
; SOFT-DEFAULT: BLX $__divsi3, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
; SOFT-DEFAULT: [[R32:%[0-9]+]](s32) = COPY %r0
; SOFT: ADJCALLSTACKUP
; SOFT-NOT: G_SDIV
; CHECK: [[R:%[0-9]+]](s8) = G_TRUNC [[R32]]
; SOFT-NOT: G_SDIV
%2(s8) = G_SDIV %0, %1
; CHECK: %r0 = COPY [[R]]
%r0 = COPY %2(s8)
BX_RET 14, _, implicit %r0
...
---
name: test_udiv_i8
# CHECK-LABEL: name: test_udiv_i8
legalized: false
# CHECK: legalized: true
regBankSelected: false
selected: false
tracksRegLiveness: true
registers:
- { id: 0, class: _ }
- { id: 1, class: _ }
- { id: 2, class: _ }
body: |
bb.0:
liveins: %r0, %r1
; CHECK-DAG: [[X:%[0-9]+]](s8) = COPY %r0
; CHECK-DAG: [[Y:%[0-9]+]](s8) = COPY %r1
; CHECK-DAG: [[X32:%[0-9]+]](s32) = G_ZEXT [[X]](s8)
; CHECK-DAG: [[Y32:%[0-9]+]](s32) = G_ZEXT [[Y]](s8)
%0(s8) = COPY %r0
%1(s8) = COPY %r1
; HWDIV: [[R32:%[0-9]+]](s32) = G_UDIV [[X32]], [[Y32]]
; SOFT-NOT: G_UDIV
; SOFT: ADJCALLSTACKDOWN
; SOFT-DAG: %r0 = COPY [[X32]]
; SOFT-DAG: %r1 = COPY [[Y32]]
; SOFT-AEABI: BLX $__aeabi_uidiv, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
; SOFT-AEABI: [[R32:%[0-9]+]](s32) = COPY %r0
; SOFT-DEFAULT: BLX $__udivsi3, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
; SOFT-DEFAULT: [[R32:%[0-9]+]](s32) = COPY %r0
; SOFT: ADJCALLSTACKUP
; SOFT-NOT: G_UDIV
; CHECK: [[R:%[0-9]+]](s8) = G_TRUNC [[R32]]
; SOFT-NOT: G_UDIV
%2(s8) = G_UDIV %0, %1
; CHECK: %r0 = COPY [[R]]
%r0 = COPY %2(s8)
BX_RET 14, _, implicit %r0
...
---
name: test_srem_i32
# CHECK-LABEL: name: test_srem_i32
legalized: false
# CHECK: legalized: true
regBankSelected: false
selected: false
tracksRegLiveness: true
registers:
- { id: 0, class: _ }
- { id: 1, class: _ }
- { id: 2, class: _ }
body: |
bb.0:
liveins: %r0, %r1
; CHECK-DAG: [[X:%[0-9]+]](s32) = COPY %r0
; CHECK-DAG: [[Y:%[0-9]+]](s32) = COPY %r1
%0(s32) = COPY %r0
%1(s32) = COPY %r1
; HWDIV: [[Q:%[0-9]+]](s32) = G_SDIV [[X]], [[Y]]
; HWDIV: [[P:%[0-9]+]](s32) = G_MUL [[Q]], [[Y]]
; HWDIV: [[R:%[0-9]+]](s32) = G_SUB [[X]], [[P]]
; SOFT-NOT: G_SREM
; SOFT: ADJCALLSTACKDOWN
; SOFT-DAG: %r0 = COPY [[X]]
; SOFT-DAG: %r1 = COPY [[Y]]
; SOFT-AEABI: BLX $__aeabi_idivmod, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0, implicit-def %r1
; SOFT-AEABI: [[R:%[0-9]+]](s32) = COPY %r1
; SOFT-DEFAULT: BLX $__modsi3, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
; SOFT-DEFAULT: [[R:%[0-9]+]](s32) = COPY %r0
; SOFT: ADJCALLSTACKUP
; SOFT-NOT: G_SREM
%2(s32) = G_SREM %0, %1
; CHECK: %r0 = COPY [[R]]
%r0 = COPY %2(s32)
BX_RET 14, _, implicit %r0
...
---
name: test_urem_i32
# CHECK-LABEL: name: test_urem_i32
legalized: false
# CHECK: legalized: true
regBankSelected: false
selected: false
tracksRegLiveness: true
registers:
- { id: 0, class: _ }
- { id: 1, class: _ }
- { id: 2, class: _ }
body: |
bb.0:
liveins: %r0, %r1
; CHECK-DAG: [[X:%[0-9]+]](s32) = COPY %r0
; CHECK-DAG: [[Y:%[0-9]+]](s32) = COPY %r1
%0(s32) = COPY %r0
%1(s32) = COPY %r1
; HWDIV: [[Q:%[0-9]+]](s32) = G_UDIV [[X]], [[Y]]
; HWDIV: [[P:%[0-9]+]](s32) = G_MUL [[Q]], [[Y]]
; HWDIV: [[R:%[0-9]+]](s32) = G_SUB [[X]], [[P]]
; SOFT-NOT: G_UREM
; SOFT: ADJCALLSTACKDOWN
; SOFT-DAG: %r0 = COPY [[X]]
; SOFT-DAG: %r1 = COPY [[Y]]
; SOFT-AEABI: BLX $__aeabi_uidivmod, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0, implicit-def %r1
; SOFT-AEABI: [[R:%[0-9]+]](s32) = COPY %r1
; SOFT-DEFAULT: BLX $__umodsi3, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
; SOFT-DEFAULT: [[R:%[0-9]+]](s32) = COPY %r0
; SOFT: ADJCALLSTACKUP
; SOFT-NOT: G_UREM
%2(s32) = G_UREM %0, %1
; CHECK: %r0 = COPY [[R]]
%r0 = COPY %2(s32)
BX_RET 14, _, implicit %r0
...
---
name: test_srem_i16
# CHECK-LABEL: name: test_srem_i16
legalized: false
# CHECK: legalized: true
regBankSelected: false
selected: false
tracksRegLiveness: true
registers:
- { id: 0, class: _ }
- { id: 1, class: _ }
- { id: 2, class: _ }
body: |
bb.0:
liveins: %r0, %r1
; CHECK-DAG: [[X:%[0-9]+]](s16) = COPY %r0
; CHECK-DAG: [[Y:%[0-9]+]](s16) = COPY %r1
; CHECK-DAG: [[X32:%[0-9]+]](s32) = G_SEXT [[X]](s16)
; CHECK-DAG: [[Y32:%[0-9]+]](s32) = G_SEXT [[Y]](s16)
%0(s16) = COPY %r0
%1(s16) = COPY %r1
; HWDIV: [[Q32:%[0-9]+]](s32) = G_SDIV [[X32]], [[Y32]]
; HWDIV: [[P32:%[0-9]+]](s32) = G_MUL [[Q32]], [[Y32]]
; HWDIV: [[R32:%[0-9]+]](s32) = G_SUB [[X32]], [[P32]]
; SOFT-NOT: G_SREM
; SOFT: ADJCALLSTACKDOWN
; SOFT-DAG: %r0 = COPY [[X32]]
; SOFT-DAG: %r1 = COPY [[Y32]]
; SOFT-AEABI: BLX $__aeabi_idivmod, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
; SOFT-AEABI: [[R32:%[0-9]+]](s32) = COPY %r1
; SOFT-DEFAULT: BLX $__modsi3, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
; SOFT-DEFAULT: [[R32:%[0-9]+]](s32) = COPY %r0
; SOFT: ADJCALLSTACKUP
; SOFT-NOT: G_SREM
; CHECK: [[R:%[0-9]+]](s16) = G_TRUNC [[R32]]
; SOFT-NOT: G_SREM
%2(s16) = G_SREM %0, %1
; CHECK: %r0 = COPY [[R]]
%r0 = COPY %2(s16)
BX_RET 14, _, implicit %r0
...
---
name: test_urem_i16
# CHECK-LABEL: name: test_urem_i16
legalized: false
# CHECK: legalized: true
regBankSelected: false
selected: false
tracksRegLiveness: true
registers:
- { id: 0, class: _ }
- { id: 1, class: _ }
- { id: 2, class: _ }
body: |
bb.0:
liveins: %r0, %r1
; CHECK-DAG: [[X:%[0-9]+]](s16) = COPY %r0
; CHECK-DAG: [[Y:%[0-9]+]](s16) = COPY %r1
; CHECK-DAG: [[X32:%[0-9]+]](s32) = G_ZEXT [[X]](s16)
; CHECK-DAG: [[Y32:%[0-9]+]](s32) = G_ZEXT [[Y]](s16)
%0(s16) = COPY %r0
%1(s16) = COPY %r1
; HWDIV: [[Q32:%[0-9]+]](s32) = G_UDIV [[X32]], [[Y32]]
; HWDIV: [[P32:%[0-9]+]](s32) = G_MUL [[Q32]], [[Y32]]
; HWDIV: [[R32:%[0-9]+]](s32) = G_SUB [[X32]], [[P32]]
; SOFT-NOT: G_UREM
; SOFT: ADJCALLSTACKDOWN
; SOFT-DAG: %r0 = COPY [[X32]]
; SOFT-DAG: %r1 = COPY [[Y32]]
; SOFT-AEABI: BLX $__aeabi_uidivmod, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
; SOFT-AEABI: [[R32:%[0-9]+]](s32) = COPY %r1
; SOFT-DEFAULT: BLX $__umodsi3, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
; SOFT-DEFAULT: [[R32:%[0-9]+]](s32) = COPY %r0
; SOFT: ADJCALLSTACKUP
; SOFT-NOT: G_UREM
; CHECK: [[R:%[0-9]+]](s16) = G_TRUNC [[R32]]
; SOFT-NOT: G_UREM
%2(s16) = G_UREM %0, %1
; CHECK: %r0 = COPY [[R]]
%r0 = COPY %2(s16)
BX_RET 14, _, implicit %r0
...
---
name: test_srem_i8
# CHECK-LABEL: name: test_srem_i8
legalized: false
# CHECK: legalized: true
regBankSelected: false
selected: false
tracksRegLiveness: true
registers:
- { id: 0, class: _ }
- { id: 1, class: _ }
- { id: 2, class: _ }
body: |
bb.0:
liveins: %r0, %r1
; CHECK-DAG: [[X:%[0-9]+]](s8) = COPY %r0
; CHECK-DAG: [[Y:%[0-9]+]](s8) = COPY %r1
; CHECK-DAG: [[X32:%[0-9]+]](s32) = G_SEXT [[X]](s8)
; CHECK-DAG: [[Y32:%[0-9]+]](s32) = G_SEXT [[Y]](s8)
%0(s8) = COPY %r0
%1(s8) = COPY %r1
; HWDIV: [[Q32:%[0-9]+]](s32) = G_SDIV [[X32]], [[Y32]]
; HWDIV: [[P32:%[0-9]+]](s32) = G_MUL [[Q32]], [[Y32]]
; HWDIV: [[R32:%[0-9]+]](s32) = G_SUB [[X32]], [[P32]]
; SOFT-NOT: G_SREM
; SOFT: ADJCALLSTACKDOWN
; SOFT-DAG: %r0 = COPY [[X32]]
; SOFT-DAG: %r1 = COPY [[Y32]]
; SOFT-AEABI: BLX $__aeabi_idivmod, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
; SOFT-AEABI: [[R32:%[0-9]+]](s32) = COPY %r1
; SOFT-DEFAULT: BLX $__modsi3, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
; SOFT-DEFAULT: [[R32:%[0-9]+]](s32) = COPY %r0
; SOFT: ADJCALLSTACKUP
; SOFT-NOT: G_SREM
; CHECK: [[R:%[0-9]+]](s8) = G_TRUNC [[R32]]
; SOFT-NOT: G_SREM
%2(s8) = G_SREM %0, %1
; CHECK: %r0 = COPY [[R]]
%r0 = COPY %2(s8)
BX_RET 14, _, implicit %r0
...
---
name: test_urem_i8
# CHECK-LABEL: name: test_urem_i8
legalized: false
# CHECK: legalized: true
regBankSelected: false
selected: false
tracksRegLiveness: true
registers:
- { id: 0, class: _ }
- { id: 1, class: _ }
- { id: 2, class: _ }
body: |
bb.0:
liveins: %r0, %r1
; CHECK-DAG: [[X:%[0-9]+]](s8) = COPY %r0
; CHECK-DAG: [[Y:%[0-9]+]](s8) = COPY %r1
; CHECK-DAG: [[X32:%[0-9]+]](s32) = G_ZEXT [[X]](s8)
; CHECK-DAG: [[Y32:%[0-9]+]](s32) = G_ZEXT [[Y]](s8)
%0(s8) = COPY %r0
%1(s8) = COPY %r1
; HWDIV: [[Q32:%[0-9]+]](s32) = G_UDIV [[X32]], [[Y32]]
; HWDIV: [[P32:%[0-9]+]](s32) = G_MUL [[Q32]], [[Y32]]
; HWDIV: [[R32:%[0-9]+]](s32) = G_SUB [[X32]], [[P32]]
; SOFT-NOT: G_UREM
; SOFT: ADJCALLSTACKDOWN
; SOFT-DAG: %r0 = COPY [[X32]]
; SOFT-DAG: %r1 = COPY [[Y32]]
; SOFT-AEABI: BLX $__aeabi_uidivmod, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
; SOFT-AEABI: [[R32:%[0-9]+]](s32) = COPY %r1
; SOFT-DEFAULT: BLX $__umodsi3, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
; SOFT-DEFAULT: [[R32:%[0-9]+]](s32) = COPY %r0
; SOFT: ADJCALLSTACKUP
; SOFT-NOT: G_UREM
; CHECK: [[R:%[0-9]+]](s8) = G_TRUNC [[R32]]
; SOFT-NOT: G_UREM
%2(s8) = G_UREM %0, %1
; CHECK: %r0 = COPY [[R]]
%r0 = COPY %2(s8)
BX_RET 14, _, implicit %r0
...