test/CodeGen/X86/GlobalISel/legalize-sub.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -O0 -mtriple=x86_64-linux-gnu -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=X64
# RUN: llc -O0 -mtriple=i386-linux-gnu  -run-pass=legalizer -global-isel-abort=2 -pass-remarks-missed='gisel*'  %s 2>%t -o - | FileCheck %s --check-prefix=X32
# RUN: FileCheck -check-prefix=ERR32  %s < %t

# ERR32: remark: <unknown>:0:0: unable to legalize instruction: %13:_(s32), %14:_(s1) = G_USUBE %8:_, %10:_, %12:_ (in function: test_sub_i42)
# ERR32: remark: <unknown>:0:0: unable to legalize instruction: %9:_(s32), %10:_(s1) = G_USUBE %4:_, %6:_, %8:_ (in function: test_sub_i64)

--- |

  define void @test_sub_i1() { ret void}
  define void @test_sub_i8() { ret void }
  define void @test_sub_i16() { ret void }
  define void @test_sub_i27() { ret void }
  define void @test_sub_i32() { ret void }
  define void @test_sub_i42() { ret void }
  define void @test_sub_i64() { ret void }

...
---
name:            test_sub_i1
# CHECK-LABEL: name:  test_sub_i1
alignment:       16
legalized:       false
regBankSelected: false
registers:
  - { id: 0, class: _, preferred-register: '' }
  - { id: 1, class: _, preferred-register: '' }
  - { id: 2, class: _, preferred-register: '' }
body:             |
  bb.1 (%ir-block.0):
    ; X64-LABEL: name: test_sub_i1
    ; X64: [[COPY:%[0-9]+]]:_(s32) = COPY $edx
    ; X64-NEXT: [[TRUNC:%[0-9]+]]:_(s8) = G_TRUNC [[COPY]](s32)
    ; X64-NEXT: [[TRUNC1:%[0-9]+]]:_(s8) = G_TRUNC [[COPY]](s32)
    ; X64-NEXT: [[SUB:%[0-9]+]]:_(s8) = G_SUB [[TRUNC]], [[TRUNC1]]
    ; X64-NEXT: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[SUB]](s8)
    ; X64-NEXT: $eax = COPY [[ANYEXT]](s32)
    ; X64-NEXT: RET 0
    ; X32-LABEL: name: test_sub_i1
    ; X32: [[COPY:%[0-9]+]]:_(s32) = COPY $edx
    ; X32-NEXT: [[TRUNC:%[0-9]+]]:_(s8) = G_TRUNC [[COPY]](s32)
    ; X32-NEXT: [[TRUNC1:%[0-9]+]]:_(s8) = G_TRUNC [[COPY]](s32)
    ; X32-NEXT: [[SUB:%[0-9]+]]:_(s8) = G_SUB [[TRUNC]], [[TRUNC1]]
    ; X32-NEXT: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[SUB]](s8)
    ; X32-NEXT: $eax = COPY [[ANYEXT]](s32)
    ; X32-NEXT: RET 0
    %0(s32) = COPY $edx
    %1(s1) = G_TRUNC %0(s32)
    %2(s1) = G_SUB %1, %1
    %3:_(s32) = G_ANYEXT %2
    $eax = COPY %3
    RET 0
...
---
name:            test_sub_i8
# CHECK-LABEL: name:  test_sub_i1
alignment:       16
legalized:       false
regBankSelected: false
registers:
  - { id: 0, class: _, preferred-register: '' }
  - { id: 1, class: _, preferred-register: '' }
  - { id: 2, class: _, preferred-register: '' }
# CHECK:          %0(s32) = COPY $edx
# CHECK-NEXT:     %3(s8) = G_TRUNC %0(s32)
# CHECK-NEXT:     %4(s8) = G_TRUNC %0(s32)
# CHECK-NEXT:     %5(s8) = G_SUB %3, %4
# CHECK:     RET 0
body:             |
  bb.1 (%ir-block.0):
    ; X64-LABEL: name: test_sub_i8
    ; X64: [[COPY:%[0-9]+]]:_(s32) = COPY $edx
    ; X64-NEXT: [[TRUNC:%[0-9]+]]:_(s8) = G_TRUNC [[COPY]](s32)
    ; X64-NEXT: [[SUB:%[0-9]+]]:_(s8) = G_SUB [[TRUNC]], [[TRUNC]]
    ; X64-NEXT: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[SUB]](s8)
    ; X64-NEXT: $eax = COPY [[ANYEXT]](s32)
    ; X64-NEXT: RET 0
    ; X32-LABEL: name: test_sub_i8
    ; X32: [[COPY:%[0-9]+]]:_(s32) = COPY $edx
    ; X32-NEXT: [[TRUNC:%[0-9]+]]:_(s8) = G_TRUNC [[COPY]](s32)
    ; X32-NEXT: [[SUB:%[0-9]+]]:_(s8) = G_SUB [[TRUNC]], [[TRUNC]]
    ; X32-NEXT: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[SUB]](s8)
    ; X32-NEXT: $eax = COPY [[ANYEXT]](s32)
    ; X32-NEXT: RET 0
    %0(s32) = COPY $edx
    %1(s8) = G_TRUNC %0(s32)
    %2(s8) = G_SUB %1, %1
    %3:_(s32) = G_ANYEXT %2
    $eax = COPY %3
    RET 0
...
---
name:            test_sub_i16
alignment:       16
legalized:       false
regBankSelected: false
registers:
  - { id: 0, class: _ }
  - { id: 1, class: _ }
  - { id: 2, class: _ }
body:             |
  bb.1 (%ir-block.0):
    ; X64-LABEL: name: test_sub_i16
    ; X64: [[COPY:%[0-9]+]]:_(s32) = COPY $edx
    ; X64-NEXT: [[TRUNC:%[0-9]+]]:_(s16) = G_TRUNC [[COPY]](s32)
    ; X64-NEXT: [[SUB:%[0-9]+]]:_(s16) = G_SUB [[TRUNC]], [[TRUNC]]
    ; X64-NEXT: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[SUB]](s16)
    ; X64-NEXT: $eax = COPY [[ANYEXT]](s32)
    ; X64-NEXT: RET 0
    ; X32-LABEL: name: test_sub_i16
    ; X32: [[COPY:%[0-9]+]]:_(s32) = COPY $edx
    ; X32-NEXT: [[TRUNC:%[0-9]+]]:_(s16) = G_TRUNC [[COPY]](s32)
    ; X32-NEXT: [[SUB:%[0-9]+]]:_(s16) = G_SUB [[TRUNC]], [[TRUNC]]
    ; X32-NEXT: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[SUB]](s16)
    ; X32-NEXT: $eax = COPY [[ANYEXT]](s32)
    ; X32-NEXT: RET 0
    %0(s32) = COPY $edx
    %1(s16) = G_TRUNC %0(s32)
    %2(s16) = G_SUB %1, %1
    %3:_(s32) = G_ANYEXT %2
    $eax = COPY %3
    RET 0
...
---
name:            test_sub_i27
alignment:       16
legalized:       false
regBankSelected: false
registers:
  - { id: 0, class: _ }
  - { id: 1, class: _ }
  - { id: 2, class: _ }
body:             |
  bb.1 (%ir-block.0):
    ; X64-LABEL: name: test_sub_i27
    ; X64: [[COPY:%[0-9]+]]:_(s32) = COPY $edx
    ; X64-NEXT: [[SUB:%[0-9]+]]:_(s32) = G_SUB [[COPY]], [[COPY]]
    ; X64-NEXT: $eax = COPY [[SUB]](s32)
    ; X64-NEXT: RET 0
    ; X32-LABEL: name: test_sub_i27
    ; X32: [[COPY:%[0-9]+]]:_(s32) = COPY $edx
    ; X32-NEXT: [[SUB:%[0-9]+]]:_(s32) = G_SUB [[COPY]], [[COPY]]
    ; X32-NEXT: $eax = COPY [[SUB]](s32)
    ; X32-NEXT: RET 0
    %0(s32) = COPY $edx
    %1(s27) = G_TRUNC %0(s32)
    %2(s27) = G_SUB %1, %1
    %3:_(s32) = G_ANYEXT %2
    $eax = COPY %3
    RET 0
...
---
name:            test_sub_i32
alignment:       16
legalized:       false
regBankSelected: false
registers:
  - { id: 0, class: _ }
  - { id: 1, class: _ }
  - { id: 2, class: _ }
body:             |
  bb.1 (%ir-block.0):
    ; X64-LABEL: name: test_sub_i32
    ; X64: [[DEF:%[0-9]+]]:_(s32) = IMPLICIT_DEF
    ; X64-NEXT: [[DEF1:%[0-9]+]]:_(s32) = IMPLICIT_DEF
    ; X64-NEXT: [[SUB:%[0-9]+]]:_(s32) = G_SUB [[DEF]], [[DEF1]]
    ; X64-NEXT: $eax = COPY [[SUB]](s32)
    ; X64-NEXT: RET 0
    ; X32-LABEL: name: test_sub_i32
    ; X32: [[DEF:%[0-9]+]]:_(s32) = IMPLICIT_DEF
    ; X32-NEXT: [[DEF1:%[0-9]+]]:_(s32) = IMPLICIT_DEF
    ; X32-NEXT: [[SUB:%[0-9]+]]:_(s32) = G_SUB [[DEF]], [[DEF1]]
    ; X32-NEXT: $eax = COPY [[SUB]](s32)
    ; X32-NEXT: RET 0
    %0(s32) = IMPLICIT_DEF
    %1(s32) = IMPLICIT_DEF
    %2(s32) = G_SUB %0, %1
    $eax = COPY %2
    RET 0
...
---
name:            test_sub_i42
alignment:       16
legalized:       false
regBankSelected: false
registers:
  - { id: 0, class: _ }
  - { id: 1, class: _ }
  - { id: 2, class: _ }
body:             |
  bb.1 (%ir-block.0):
    ; X64-LABEL: name: test_sub_i42
    ; X64: [[COPY:%[0-9]+]]:_(s64) = COPY $rdx
    ; X64-NEXT: [[SUB:%[0-9]+]]:_(s64) = G_SUB [[COPY]], [[COPY]]
    ; X64-NEXT: $rax = COPY [[SUB]](s64)
    ; X64-NEXT: RET 0
    ; X32-LABEL: name: test_sub_i42
    ; X32: [[COPY:%[0-9]+]]:_(s64) = COPY $rdx
    ; X32-NEXT: [[TRUNC:%[0-9]+]]:_(s42) = G_TRUNC [[COPY]](s64)
    ; X32-NEXT: [[ANYEXT:%[0-9]+]]:_(s64) = G_ANYEXT [[TRUNC]](s42)
    ; X32-NEXT: [[ANYEXT1:%[0-9]+]]:_(s64) = G_ANYEXT [[TRUNC]](s42)
    ; X32-NEXT: [[UV:%[0-9]+]]:_(s32), [[UV1:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[ANYEXT]](s64)
    ; X32-NEXT: [[UV2:%[0-9]+]]:_(s32), [[UV3:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[ANYEXT1]](s64)
    ; X32-NEXT: [[USUBO:%[0-9]+]]:_(s32), [[USUBO1:%[0-9]+]]:_(s1) = G_USUBO [[UV]], [[UV2]]
    ; X32-NEXT: [[USUBE:%[0-9]+]]:_(s32), [[USUBE1:%[0-9]+]]:_(s1) = G_USUBE [[UV1]], [[UV3]], [[USUBO1]]
    ; X32-NEXT: [[MV:%[0-9]+]]:_(s64) = G_MERGE_VALUES [[USUBO]](s32), [[USUBE]](s32)
    ; X32-NEXT: [[TRUNC1:%[0-9]+]]:_(s42) = G_TRUNC [[MV]](s64)
    ; X32-NEXT: [[ANYEXT2:%[0-9]+]]:_(s64) = G_ANYEXT [[TRUNC1]](s42)
    ; X32-NEXT: $rax = COPY [[ANYEXT2]](s64)
    ; X32-NEXT: RET 0
    %0(s64) = COPY $rdx
    %1(s42) = G_TRUNC %0(s64)
    %2(s42) = G_SUB %1, %1
    %3:_(s64) = G_ANYEXT %2
    $rax = COPY %3
    RET 0
...
---
name:            test_sub_i64
alignment:       16
legalized:       false
regBankSelected: false
registers:
  - { id: 0, class: _ }
  - { id: 1, class: _ }
  - { id: 2, class: _ }
body:             |
  bb.1 (%ir-block.0):
    ; X64-LABEL: name: test_sub_i64
    ; X64: [[DEF:%[0-9]+]]:_(s64) = IMPLICIT_DEF
    ; X64-NEXT: [[DEF1:%[0-9]+]]:_(s64) = IMPLICIT_DEF
    ; X64-NEXT: [[SUB:%[0-9]+]]:_(s64) = G_SUB [[DEF]], [[DEF1]]
    ; X64-NEXT: $rax = COPY [[SUB]](s64)
    ; X64-NEXT: RET 0
    ; X32-LABEL: name: test_sub_i64
    ; X32: [[DEF:%[0-9]+]]:_(s64) = IMPLICIT_DEF
    ; X32-NEXT: [[DEF1:%[0-9]+]]:_(s64) = IMPLICIT_DEF
    ; X32-NEXT: [[UV:%[0-9]+]]:_(s32), [[UV1:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[DEF]](s64)
    ; X32-NEXT: [[UV2:%[0-9]+]]:_(s32), [[UV3:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[DEF1]](s64)
    ; X32-NEXT: [[USUBO:%[0-9]+]]:_(s32), [[USUBO1:%[0-9]+]]:_(s1) = G_USUBO [[UV]], [[UV2]]
    ; X32-NEXT: [[USUBE:%[0-9]+]]:_(s32), [[USUBE1:%[0-9]+]]:_(s1) = G_USUBE [[UV1]], [[UV3]], [[USUBO1]]
    ; X32-NEXT: [[MV:%[0-9]+]]:_(s64) = G_MERGE_VALUES [[USUBO]](s32), [[USUBE]](s32)
    ; X32-NEXT: $rax = COPY [[MV]](s64)
    ; X32-NEXT: RET 0
    %0(s64) = IMPLICIT_DEF
    %1(s64) = IMPLICIT_DEF
    %2(s64) = G_SUB %0, %1
    $rax = COPY %2
    RET 0
...