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annotate test/Transforms/InstCombine/align-external.ll @ 0:95c75e76d11b LLVM3.4

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LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
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children afa8332a0e37
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95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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1 ; RUN: opt < %s -instcombine -S | FileCheck %s
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2
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3 ; Don't assume that external global variables or those with weak linkage have
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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4 ; their preferred alignment. They may only have the ABI minimum alignment.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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5
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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6 ; CHECK: %s = shl i64 %a, 3
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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7 ; CHECK: %r = or i64 %s, ptrtoint (i32* @A to i64)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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8 ; CHECK: %q = add i64 %r, 1
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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9 ; CHECK: ret i64 %q
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10
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11 target datalayout = "i32:8:32"
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12
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13 @A = external global i32
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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14 @B = weak_odr global i32 0
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15
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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16 define i64 @foo(i64 %a) {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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17 %t = ptrtoint i32* @A to i64
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18 %s = shl i64 %a, 3
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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19 %r = or i64 %t, %s
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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20 %q = add i64 %r, 1
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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21 ret i64 %q
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22 }
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23
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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24 define i32 @bar() {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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25 ; CHECK-LABEL: @bar(
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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26 %r = load i32* @B, align 1
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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27 ; CHECK: align 1
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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28 ret i32 %r
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29 }