llvm-project/llvm/test/CodeGen/Mips/rotate.ll

; RUN: llc -march=mips -mcpu=mips32r2 < %s | FileCheck %s
; RUN: llc -mtriple=mipsel-linux-gnu -march=mipsel -mcpu=mips32r2 -mattr=+mips16 < %s | FileCheck %s -check-prefix=mips16
; RUN: llc -march=mips -mcpu=mips32r3 -mattr=+micromips < %s | FileCheck %s \
; RUN:    -check-prefix=MM32
; RUN: llc -march=mips -mcpu=mips32r6 -mattr=+micromips < %s | FileCheck %s \
; RUN:    -check-prefix=MM32

; CHECK:  rotrv $2, $4
; mips16: .ent rot0
; MM32:   li16  $2, 32
; MM32:   subu16  $2, $2, $5
; MM32:   rotrv $2, $4, $2
define i32 @rot0(i32 %a, i32 %b) nounwind readnone {
entry:
  %shl = shl i32 %a, %b
  %sub = sub i32 32, %b
  %shr = lshr i32 %a, %sub
  %or = or i32 %shr, %shl
  ret i32 %or
}

; CHECK:  rotr  $2, $4, 22
; mips16: .ent rot1
; MM32:   rotr  $2, $4, 22
define i32 @rot1(i32 %a) nounwind readnone {
entry:
  %shl = shl i32 %a, 10
  %shr = lshr i32 %a, 22
  %or = or i32 %shl, %shr
  ret i32 %or
}

; CHECK:  rotrv $2, $4, $5
; mips16: .ent rot2
; MM32:   rotrv $2, $4, $5
define i32 @rot2(i32 %a, i32 %b) nounwind readnone {
entry:
  %shr = lshr i32 %a, %b
  %sub = sub i32 32, %b
  %shl = shl i32 %a, %sub
  %or = or i32 %shl, %shr
  ret i32 %or
}

; CHECK:  rotr  $2, $4, 10
; mips16: .ent rot3
; MM32:   rotr  $2, $4, 10
define i32 @rot3(i32 %a) nounwind readnone {
entry:
  %shr = lshr i32 %a, 10
  %shl = shl i32 %a, 22
  %or = or i32 %shr, %shl
  ret i32 %or
}