llvm/test/CodeGen/ARM/bswap16.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=arm-darwin -mattr=v6 | FileCheck %s --check-prefixes=CHECK
; RUN: llc < %s -mtriple=thumb-darwin -mattr=v6 | FileCheck %s --check-prefixes=CHECK

define void @test1(ptr nocapture %data) {
; CHECK-LABEL: test1:
; CHECK:       @ %bb.0: @ %entry
; CHECK-NEXT:    ldrh r1, [r0]
; CHECK-NEXT:    rev16 r1, r1
; CHECK-NEXT:    strh r1, [r0]
; CHECK-NEXT:    bx lr
entry:
  %0 = load i16, ptr %data, align 2
  %1 = tail call i16 @llvm.bswap.i16(i16 %0)
  store i16 %1, ptr %data, align 2
  ret void
}

define void @test2(ptr nocapture %data, i16 zeroext %in) {
; CHECK-LABEL: test2:
; CHECK:       @ %bb.0: @ %entry
; CHECK-NEXT:    rev16 r1, r1
; CHECK-NEXT:    strh r1, [r0]
; CHECK-NEXT:    bx lr
entry:
  %0 = tail call i16 @llvm.bswap.i16(i16 %in)
  store i16 %0, ptr %data, align 2
  ret void
}

define i16 @test3(ptr nocapture %data) {
; CHECK-LABEL: test3:
; CHECK:       @ %bb.0: @ %entry
; CHECK-NEXT:    ldrh r0, [r0]
; CHECK-NEXT:    rev16 r0, r0
; CHECK-NEXT:    bx lr
entry:
  %0 = load i16, ptr %data, align 2
  %1 = tail call i16 @llvm.bswap.i16(i16 %0)
  ret i16 %1
}

declare i16 @llvm.bswap.i16(i16)