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annotate test/CodeGen/ARM/iabs.ll @ 128:c347d3398279 default tip

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fix
author mir3636
date Wed, 06 Dec 2017 14:37:17 +0900
parents 54457678186b
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
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1 ; RUN: llc -mtriple=arm-eabi -mattr=+v4t %s -o - | FileCheck %s
0
95c75e76d11b LLVM 3.4
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2
95c75e76d11b LLVM 3.4
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3 ;; Integer absolute value, should produce something as good as: ARM:
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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4 ;; movs r0, r0
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5 ;; rsbmi r0, r0, #0
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6 ;; bx lr
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7
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8 define i32 @test(i32 %a) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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9 %tmp1neg = sub i32 0, %a
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10 %b = icmp sgt i32 %a, -1
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11 %abs = select i1 %b, i32 %a, i32 %tmp1neg
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12 ret i32 %abs
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13 ; CHECK: cmp
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14 ; CHECK: rsbmi r0, r0, #0
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15 ; CHECK: bx lr
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16 }
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17
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18 ; rdar://11633193
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19 ;; 3 instructions will be generated for abs(a-b):
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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20 ;; subs
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21 ;; rsbmi
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22 ;; bx
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23 define i32 @test2(i32 %a, i32 %b) nounwind readnone ssp {
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24 entry:
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25 ; CHECK: test2
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26 ; CHECK: subs
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27 ; CHECK-NEXT: rsbmi
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28 ; CHECK-NEXT: bx
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29 %sub = sub nsw i32 %a, %b
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30 %cmp = icmp sgt i32 %sub, -1
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31 %sub1 = sub nsw i32 0, %sub
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32 %cond = select i1 %cmp, i32 %sub, i32 %sub1
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33 ret i32 %cond
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34 }