Mercurial > hg > CbC > CbC_llvm

diff test/Analysis/BasicAA/2009-10-13-AtomicModRef.ll @ 0:95c75e76d11b LLVM3.4

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
parents
children afa8332a0e37
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/Analysis/BasicAA/2009-10-13-AtomicModRef.ll	Thu Dec 12 13:56:28 2013 +0900
@@ -0,0 +1,15 @@
+; RUN: opt -basicaa -gvn -instcombine -S < %s | FileCheck %s
+target datalayout = "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128"
+
+define i8 @foo(i8* %ptr) {
+  %P = getelementptr i8* %ptr, i32 0
+  %Q = getelementptr i8* %ptr, i32 1
+; CHECK: getelementptr
+  %X = load i8* %P
+  %Y = atomicrmw add i8* %Q, i8 1 monotonic
+  %Z = load i8* %P
+; CHECK-NOT: = load
+  %A = sub i8 %X, %Z
+  ret i8 %A
+; CHECK: ret i8 0
+}