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annotate test/Analysis/BasicAA/invariant_load.ll @ 95:afa8332a0e37 LLVM3.8

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LLVM 3.8
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Tue, 13 Oct 2015 17:48:58 +0900
parents 60c9769439b8
children
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95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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1 ; RUN: opt < %s -basicaa -gvn -S | FileCheck %s
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3 ; The input *.ll is obtained by manually annotating "invariant.load" to the
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4 ; two loads. With "invariant.load" metadata, the second load is redundant.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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5 ;
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6 ; int foo(int *p, char *q) {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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7 ; *q = (char)*p;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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8 ; return *p + 1;
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9 ; }
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11 define i32 @foo(i32* nocapture %p, i8* nocapture %q) {
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12 entry:
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afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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13 %0 = load i32, i32* %p, align 4, !invariant.load !3
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14 %conv = trunc i32 %0 to i8
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15 store i8 %conv, i8* %q, align 1
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afa8332a0e37 LLVM 3.8
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16 %1 = load i32, i32* %p, align 4, !invariant.load !3
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17 %add = add nsw i32 %1, 1
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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18 ret i32 %add
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19
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20 ; CHECK: foo
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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21 ; CHECK: %0 = load i32, i32* %p
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22 ; CHECK: store i8 %conv, i8* %q,
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23 ; CHECK: %add = add nsw i32 %0, 1
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24 }
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25
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Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
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26 !3 = !{}