1 ; RUN: llc -mtriple=arm-eabi -mattr=+v6 %s -o - | FileCheck %s
3 define i32 @test1(i32 %X) nounwind {
7 %X15 = bitcast i32 %X to i32
8 %tmp4 = shl i32 %X15, 8
9 %tmp2 = and i32 %tmp1, 16711680
10 %tmp5 = and i32 %tmp4, -16777216
11 %tmp9 = and i32 %tmp1, 255
12 %tmp13 = and i32 %tmp4, 65280
13 %tmp6 = or i32 %tmp5, %tmp2
14 %tmp10 = or i32 %tmp6, %tmp13
15 %tmp14 = or i32 %tmp10, %tmp9
19 define i32 @test2(i32 %X) nounwind {
22 %tmp1 = lshr i32 %X, 8
23 %tmp1.upgrd.1 = trunc i32 %tmp1 to i16
24 %tmp3 = trunc i32 %X to i16
25 %tmp2 = and i16 %tmp1.upgrd.1, 255
26 %tmp4 = shl i16 %tmp3, 8
27 %tmp5 = or i16 %tmp2, %tmp4
28 %tmp5.upgrd.2 = sext i16 %tmp5 to i32
33 define i32 @test3(i16 zeroext %a) nounwind {
37 %0 = tail call i16 @llvm.bswap.i16(i16 %a)
38 %1 = sext i16 %0 to i32
42 declare i16 @llvm.bswap.i16(i16) nounwind readnone
44 define i32 @test4(i16 zeroext %a) nounwind {
48 %conv = zext i16 %a to i32
49 %shr9 = lshr i16 %a, 8
50 %conv2 = zext i16 %shr9 to i32
51 %shl = shl nuw nsw i32 %conv, 8
52 %or = or i32 %conv2, %shl
53 %sext = shl i32 %or, 16
54 %conv8 = ashr exact i32 %sext, 16
59 define i32 @test5(i32 %i) nounwind readnone {
64 %shr = ashr exact i32 %shl, 16
65 %shr23 = lshr i32 %i, 8
66 %and = and i32 %shr23, 255
67 %or = or i32 %shr, %and
72 define i32 @test6(i32 %x) nounwind readnone {
77 %shl = and i32 %and, 65280
78 %and2 = lshr i32 %x, 8
79 %shr11 = and i32 %and2, 255
80 %shr5 = and i32 %and2, 16711680
81 %shl9 = and i32 %and, -16777216
82 %or = or i32 %shr5, %shl9
83 %or6 = or i32 %or, %shr11
84 %or10 = or i32 %or6, %shl
89 define i32 @test7(i32 %a) nounwind readnone {
93 ; CHECK: lsr r0, r0, #16
95 %shr3 = and i32 %and, 255
97 %shl = and i32 %and2, 65280
98 %or = or i32 %shr3, %shl
102 define i32 @test8(i32 %a) nounwind readnone {
105 ; CHECK: revsh r0, r0
106 %and = lshr i32 %a, 8
107 %shr4 = and i32 %and, 255
108 %and2 = shl i32 %a, 8
109 %or = or i32 %shr4, %and2
110 %sext = shl i32 %or, 16
111 %conv3 = ashr exact i32 %sext, 16
116 define zeroext i16 @test9(i16 zeroext %v) nounwind readnone {
119 ; CHECK: rev16 r0, r0
120 %conv = zext i16 %v to i32
121 %shr4 = lshr i32 %conv, 8
122 %shl = shl nuw nsw i32 %conv, 8
123 %or = or i32 %shr4, %shl
124 %conv3 = trunc i32 %or to i16