1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc -mtriple=arm-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
68 define i32 @test5(i32 %i) nounwind readnone {
70 ; CHECK: @ %bb.0: @ %entry
71 ; CHECK-NEXT: revsh r0, r0
75 %shr = ashr exact i32 %shl, 16
76 %shr23 = lshr i32 %i, 8
77 %and = and i32 %shr23, 255
78 %or = or i32 %shr, %and
83 define i32 @test6(i32 %x) nounwind readnone {
85 ; CHECK: @ %bb.0: @ %entry
86 ; CHECK-NEXT: rev16 r0, r0
90 %shl = and i32 %and, 65280
91 %and2 = lshr i32 %x, 8
92 %shr11 = and i32 %and2, 255
93 %shr5 = and i32 %and2, 16711680
94 %shl9 = and i32 %and, -16777216
95 %or = or i32 %shr5, %shl9
96 %or6 = or i32 %or, %shr11
97 %or10 = or i32 %or6, %shl
102 define i32 @test7(i32 %a) nounwind readnone {
103 ; CHECK-LABEL: test7:
104 ; CHECK: @ %bb.0: @ %entry
105 ; CHECK-NEXT: rev r0, r0
106 ; CHECK-NEXT: lsr r0, r0, #16
109 %and = lshr i32 %a, 8
110 %shr3 = and i32 %and, 255
111 %and2 = shl i32 %a, 8
112 %shl = and i32 %and2, 65280
113 %or = or i32 %shr3, %shl
117 define i32 @test8(i32 %a) nounwind readnone {
118 ; CHECK-LABEL: test8:
119 ; CHECK: @ %bb.0: @ %entry
120 ; CHECK-NEXT: revsh r0, r0
123 %and = lshr i32 %a, 8
124 %shr4 = and i32 %and, 255
125 %and2 = shl i32 %a, 8
126 %or = or i32 %shr4, %and2
127 %sext = shl i32 %or, 16
128 %conv3 = ashr exact i32 %sext, 16
133 define zeroext i16 @test9(i16 zeroext %v) nounwind readnone {
134 ; CHECK-LABEL: test9:
135 ; CHECK: @ %bb.0: @ %entry
136 ; CHECK-NEXT: rev16 r0, r0
139 %conv = zext i16 %v to i32
140 %shr4 = lshr i32 %conv, 8
141 %shl = shl nuw nsw i32 %conv, 8
142 %or = or i32 %shr4, %shl
143 %conv3 = trunc i32 %or to i16