1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc -mtriple=thumb-eabi -mattr=+v6 %s -o - | FileCheck %s
4 define i32 @test1(i32 %X) nounwind {
7 ; CHECK-NEXT: rev16 r0, r0
10 %X15 = bitcast i32 %X to i32
11 %tmp4 = shl i32 %X15, 8
12 %tmp2 = and i32 %tmp1, 16711680
13 %tmp5 = and i32 %tmp4, -16777216
14 %tmp9 = and i32 %tmp1, 255
15 %tmp13 = and i32 %tmp4, 65280
16 %tmp6 = or i32 %tmp5, %tmp2
17 %tmp10 = or i32 %tmp6, %tmp13
18 %tmp14 = or i32 %tmp10, %tmp9
22 define i32 @test2(i32 %X) nounwind {
25 ; CHECK-NEXT: revsh r0, r0
27 %tmp1 = lshr i32 %X, 8
28 %tmp1.upgrd.1 = trunc i32 %tmp1 to i16
29 %tmp3 = trunc i32 %X to i16
30 %tmp2 = and i16 %tmp1.upgrd.1, 255
31 %tmp4 = shl i16 %tmp3, 8
32 %tmp5 = or i16 %tmp2, %tmp4
33 %tmp5.upgrd.2 = sext i16 %tmp5 to i32
38 define i32 @test3(i16 zeroext %a) nounwind {
40 ; CHECK: @ %bb.0: @ %entry
41 ; CHECK-NEXT: revsh r0, r0
44 %0 = tail call i16 @llvm.bswap.i16(i16 %a)
45 %1 = sext i16 %0 to i32
49 declare i16 @llvm.bswap.i16(i16) nounwind readnone
51 define i32 @test4(i16 zeroext %a) nounwind {
53 ; CHECK: @ %bb.0: @ %entry
54 ; CHECK-NEXT: revsh r0, r0
57 %conv = zext i16 %a to i32
58 %shr9 = lshr i16 %a, 8
59 %conv2 = zext i16 %shr9 to i32
60 %shl = shl nuw nsw i32 %conv, 8
61 %or = or i32 %conv2, %shl
62 %sext = shl i32 %or, 16
63 %conv8 = ashr exact i32 %sext, 16