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annotate test/CodeGen/ARM/2015-01-21-thumbv4t-ldstr-opt.ll @ 100:7d135dc70f03

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LLVM 3.9
author Miyagi Mitsuki <e135756@ie.u-ryukyu.ac.jp>
date Tue, 26 Jan 2016 22:53:40 +0900
parents afa8332a0e37
children
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60c9769439b8 LLVM 3.7
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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1 ; RUN: llc -mtriple=thumbv4t-none--eabi < %s | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-V4T
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2 ; RUN: llc -mtriple=thumbv6m-none--eabi < %s | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-V6M
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4 ; CHECK-LABEL: test1
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5 define i32 @test1(i32* %p) {
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7 ; Offsets less than 8 can be generated in a single add
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8 ; CHECK: adds [[NEWBASE:r[0-9]]], r0, #4
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9 %1 = getelementptr inbounds i32, i32* %p, i32 1
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10 %2 = getelementptr inbounds i32, i32* %p, i32 2
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11 %3 = getelementptr inbounds i32, i32* %p, i32 3
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12 %4 = getelementptr inbounds i32, i32* %p, i32 4
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14 ; CHECK-NEXT: ldm [[NEWBASE]],
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15 %5 = load i32, i32* %1, align 4
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16 %6 = load i32, i32* %2, align 4
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17 %7 = load i32, i32* %3, align 4
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18 %8 = load i32, i32* %4, align 4
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19
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20 %9 = add nsw i32 %5, %6
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21 %10 = add nsw i32 %9, %7
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22 %11 = add nsw i32 %10, %8
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23 ret i32 %11
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24 }
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26 ; CHECK-LABEL: test2
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27 define i32 @test2(i32* %p) {
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29 ; Offsets >=8 require a mov and an add
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30 ; CHECK-V4T: movs [[NEWBASE:r[0-9]]], r0
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31 ; CHECK-V6M: mov [[NEWBASE:r[0-9]]], r0
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32 ; CHECK-NEXT: adds [[NEWBASE]], #8
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33 %1 = getelementptr inbounds i32, i32* %p, i32 2
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34 %2 = getelementptr inbounds i32, i32* %p, i32 3
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35 %3 = getelementptr inbounds i32, i32* %p, i32 4
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36 %4 = getelementptr inbounds i32, i32* %p, i32 5
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37
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38 ; CHECK-NEXT: ldm [[NEWBASE]],
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39 %5 = load i32, i32* %1, align 4
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40 %6 = load i32, i32* %2, align 4
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41 %7 = load i32, i32* %3, align 4
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42 %8 = load i32, i32* %4, align 4
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44 %9 = add nsw i32 %5, %6
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45 %10 = add nsw i32 %9, %7
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46 %11 = add nsw i32 %10, %8
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47 ret i32 %11
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48 }