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

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 2
# RUN: llc -mtriple=i386-linux-gnu -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=X86-32
# RUN: llc -mtriple=x86_64-linux-gnu -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=X86-64

# test bswap for s16, s17, s32, and s64

...
---
name:            test_bswap17
body:             |
  bb.1:
    ; X86-32-LABEL: name: test_bswap17
    ; X86-32: [[DEF:%[0-9]+]]:_(s17) = IMPLICIT_DEF
    ; X86-32-NEXT: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[DEF]](s17)
    ; X86-32-NEXT: [[BSWAP:%[0-9]+]]:_(s32) = G_BSWAP [[ANYEXT]]
    ; X86-32-NEXT: [[C:%[0-9]+]]:_(s8) = G_CONSTANT i8 15
    ; X86-32-NEXT: [[LSHR:%[0-9]+]]:_(s32) = G_LSHR [[BSWAP]], [[C]](s8)
    ; X86-32-NEXT: [[TRUNC:%[0-9]+]]:_(s17) = G_TRUNC [[LSHR]](s32)
    ; X86-32-NEXT: [[COPY:%[0-9]+]]:_(s17) = COPY [[TRUNC]](s17)
    ; X86-32-NEXT: RET 0, implicit [[COPY]](s17)
    ; X86-64-LABEL: name: test_bswap17
    ; X86-64: [[DEF:%[0-9]+]]:_(s17) = IMPLICIT_DEF
    ; X86-64-NEXT: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[DEF]](s17)
    ; X86-64-NEXT: [[BSWAP:%[0-9]+]]:_(s32) = G_BSWAP [[ANYEXT]]
    ; X86-64-NEXT: [[C:%[0-9]+]]:_(s8) = G_CONSTANT i8 15
    ; X86-64-NEXT: [[LSHR:%[0-9]+]]:_(s32) = G_LSHR [[BSWAP]], [[C]](s8)
    ; X86-64-NEXT: [[TRUNC:%[0-9]+]]:_(s17) = G_TRUNC [[LSHR]](s32)
    ; X86-64-NEXT: [[COPY:%[0-9]+]]:_(s17) = COPY [[TRUNC]](s17)
    ; X86-64-NEXT: RET 0, implicit [[COPY]](s17)
    %0:_(s17) = IMPLICIT_DEF
    %1:_(s17) = G_BSWAP %0
    %2:_(s17) = COPY %1(s17)
    RET 0, implicit %2

...
---
name:            test_bswap64
body:             |
  bb.1:
    ; X86-32-LABEL: name: test_bswap64
    ; X86-32: [[DEF:%[0-9]+]]:_(s64) = IMPLICIT_DEF
    ; X86-32-NEXT: [[UV:%[0-9]+]]:_(s32), [[UV1:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[DEF]](s64)
    ; X86-32-NEXT: [[BSWAP:%[0-9]+]]:_(s32) = G_BSWAP [[UV1]]
    ; X86-32-NEXT: [[BSWAP1:%[0-9]+]]:_(s32) = G_BSWAP [[UV]]
    ; X86-32-NEXT: [[MV:%[0-9]+]]:_(s64) = G_MERGE_VALUES [[BSWAP]](s32), [[BSWAP1]](s32)
    ; X86-32-NEXT: [[COPY:%[0-9]+]]:_(s64) = COPY [[MV]](s64)
    ; X86-32-NEXT: RET 0, implicit [[COPY]](s64)
    ; X86-64-LABEL: name: test_bswap64
    ; X86-64: [[DEF:%[0-9]+]]:_(s64) = IMPLICIT_DEF
    ; X86-64-NEXT: [[BSWAP:%[0-9]+]]:_(s64) = G_BSWAP [[DEF]]
    ; X86-64-NEXT: [[COPY:%[0-9]+]]:_(s64) = COPY [[BSWAP]](s64)
    ; X86-64-NEXT: RET 0, implicit [[COPY]](s64)
    %0:_(s64) = IMPLICIT_DEF
    %1:_(s64) = G_BSWAP %0
    %2:_(s64) = COPY %1(s64)
    RET 0, implicit %2

...
---
name:            test_bswap32
body:             |
  bb.1:
    ; X86-32-LABEL: name: test_bswap32
    ; X86-32: [[DEF:%[0-9]+]]:_(s32) = IMPLICIT_DEF
    ; X86-32-NEXT: [[BSWAP:%[0-9]+]]:_(s32) = G_BSWAP [[DEF]]
    ; X86-32-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY [[BSWAP]](s32)
    ; X86-32-NEXT: RET 0, implicit [[COPY]](s32)
    ; X86-64-LABEL: name: test_bswap32
    ; X86-64: [[DEF:%[0-9]+]]:_(s32) = IMPLICIT_DEF
    ; X86-64-NEXT: [[BSWAP:%[0-9]+]]:_(s32) = G_BSWAP [[DEF]]
    ; X86-64-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY [[BSWAP]](s32)
    ; X86-64-NEXT: RET 0, implicit [[COPY]](s32)
    %0:_(s32) = IMPLICIT_DEF
    %1:_(s32) = G_BSWAP %0
    %2:_(s32) = COPY %1(s32)
    RET 0, implicit %2

...
---
name:            test_bswap16
body:             |
  bb.1:
    ; X86-32-LABEL: name: test_bswap16
    ; X86-32: [[DEF:%[0-9]+]]:_(s16) = IMPLICIT_DEF
    ; X86-32-NEXT: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[DEF]](s16)
    ; X86-32-NEXT: [[BSWAP:%[0-9]+]]:_(s32) = G_BSWAP [[ANYEXT]]
    ; X86-32-NEXT: [[C:%[0-9]+]]:_(s8) = G_CONSTANT i8 16
    ; X86-32-NEXT: [[LSHR:%[0-9]+]]:_(s32) = G_LSHR [[BSWAP]], [[C]](s8)
    ; X86-32-NEXT: [[TRUNC:%[0-9]+]]:_(s16) = G_TRUNC [[LSHR]](s32)
    ; X86-32-NEXT: [[COPY:%[0-9]+]]:_(s16) = COPY [[TRUNC]](s16)
    ; X86-32-NEXT: RET 0, implicit [[COPY]](s16)
    ; X86-64-LABEL: name: test_bswap16
    ; X86-64: [[DEF:%[0-9]+]]:_(s16) = IMPLICIT_DEF
    ; X86-64-NEXT: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[DEF]](s16)
    ; X86-64-NEXT: [[BSWAP:%[0-9]+]]:_(s32) = G_BSWAP [[ANYEXT]]
    ; X86-64-NEXT: [[C:%[0-9]+]]:_(s8) = G_CONSTANT i8 16
    ; X86-64-NEXT: [[LSHR:%[0-9]+]]:_(s32) = G_LSHR [[BSWAP]], [[C]](s8)
    ; X86-64-NEXT: [[TRUNC:%[0-9]+]]:_(s16) = G_TRUNC [[LSHR]](s32)
    ; X86-64-NEXT: [[COPY:%[0-9]+]]:_(s16) = COPY [[TRUNC]](s16)
    ; X86-64-NEXT: RET 0, implicit [[COPY]](s16)
    %0:_(s16) = IMPLICIT_DEF
    %1:_(s16) = G_BSWAP %0
    %2:_(s16) = COPY %1(s16)
    RET 0, implicit %2

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