Mercurial > hg > CbC > CbC_llvm
view test/Analysis/BasicAA/invariant_load.ll @ 95:afa8332a0e37 LLVM3.8
LLVM 3.8
author | Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> |
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date | Tue, 13 Oct 2015 17:48:58 +0900 |
parents | 60c9769439b8 |
children |
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; RUN: opt < %s -basicaa -gvn -S | FileCheck %s ; The input *.ll is obtained by manually annotating "invariant.load" to the ; two loads. With "invariant.load" metadata, the second load is redundant. ; ; int foo(int *p, char *q) { ; *q = (char)*p; ; return *p + 1; ; } define i32 @foo(i32* nocapture %p, i8* nocapture %q) { entry: %0 = load i32, i32* %p, align 4, !invariant.load !3 %conv = trunc i32 %0 to i8 store i8 %conv, i8* %q, align 1 %1 = load i32, i32* %p, align 4, !invariant.load !3 %add = add nsw i32 %1, 1 ret i32 %add ; CHECK: foo ; CHECK: %0 = load i32, i32* %p ; CHECK: store i8 %conv, i8* %q, ; CHECK: %add = add nsw i32 %0, 1 } !3 = !{}