src/llvm-project/llvm/test/CodeGen/X86/GlobalISel/legalize-ctpop-32.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 2
# RUN: llc -mtriple=i386-linux-gnu -mattr=+popcnt -run-pass=legalizer %s -o - | FileCheck %s

# test popcount for s8, s16, and s32

---
name:            test_ctpop8
alignment:       16
legalized:       false
regBankSelected: false
registers:
  - { id: 0, class: _, preferred-register: '' }
  - { id: 1, class: _, preferred-register: '' }
body:             |
  bb.1:
    ; CHECK-LABEL: name: test_ctpop8
    ; CHECK: [[DEF:%[0-9]+]]:_(s8) = IMPLICIT_DEF
    ; CHECK-NEXT: [[ZEXT:%[0-9]+]]:_(s16) = G_ZEXT [[DEF]](s8)
    ; CHECK-NEXT: [[CTPOP:%[0-9]+]]:_(s16) = G_CTPOP [[ZEXT]](s16)
    ; CHECK-NEXT: [[TRUNC:%[0-9]+]]:_(s8) = G_TRUNC [[CTPOP]](s16)
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(s8) = COPY [[TRUNC]](s8)
    ; CHECK-NEXT: RET 0, implicit [[COPY]](s8)
    %0:_(s8) = IMPLICIT_DEF
    %1:_(s8) = G_CTPOP %0
    %2:_(s8) = COPY %1(s8)
    RET 0, implicit %2

...
---
name:            test_ctpop32
alignment:       16
legalized:       false
regBankSelected: false
registers:
  - { id: 0, class: _, preferred-register: '' }
  - { id: 1, class: _, preferred-register: '' }
body:             |
  bb.1:
    ; CHECK-LABEL: name: test_ctpop32
    ; CHECK: [[DEF:%[0-9]+]]:_(s32) = IMPLICIT_DEF
    ; CHECK-NEXT: [[CTPOP:%[0-9]+]]:_(s32) = G_CTPOP [[DEF]](s32)
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY [[CTPOP]](s32)
    ; CHECK-NEXT: RET 0, implicit [[COPY]](s32)
    %0:_(s32) = IMPLICIT_DEF
    %1:_(s32) = G_CTPOP %0
    %2:_(s32) = COPY %1(s32)
    RET 0, implicit %2

...
---
name:            test_ctpop16
alignment:       16
legalized:       false
regBankSelected: false
registers:
  - { id: 0, class: _, preferred-register: '' }
  - { id: 1, class: _, preferred-register: '' }
body:             |
  bb.1:
    ; CHECK-LABEL: name: test_ctpop16
    ; CHECK: [[DEF:%[0-9]+]]:_(s16) = IMPLICIT_DEF
    ; CHECK-NEXT: [[CTPOP:%[0-9]+]]:_(s16) = G_CTPOP [[DEF]](s16)
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(s16) = COPY [[CTPOP]](s16)
    ; CHECK-NEXT: RET 0, implicit [[COPY]](s16)
    %0:_(s16) = IMPLICIT_DEF
    %1:_(s16) = G_CTPOP %0
    %2:_(s16) = COPY %1(s16)
    RET 0, implicit %2

...