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authorDuncan Sands <baldrick@free.fr>2008-12-31 16:14:43 +0000
committerDuncan Sands <baldrick@free.fr>2008-12-31 16:14:43 +0000
commit44c8cd97a508a7a12df769a1ffea29b1adb83fcc (patch)
treeeb3659c3409e778290353e261c6566fb04538c8c /llvm/test/Transforms/FunctionAttrs/2008-10-04-LocalMemory.ll
parent2cc3ce000217a80509785b9ad6c866dc0b84e01e (diff)
downloadbcm5719-llvm-44c8cd97a508a7a12df769a1ffea29b1adb83fcc.tar.gz
bcm5719-llvm-44c8cd97a508a7a12df769a1ffea29b1adb83fcc.zip
Rename AddReadAttrs to FunctionAttrs, and teach it how
to work out (in a very simplistic way) which function arguments (pointer arguments only) are only dereferenced and so do not escape. Mark such arguments 'nocapture'. llvm-svn: 61525
Diffstat (limited to 'llvm/test/Transforms/FunctionAttrs/2008-10-04-LocalMemory.ll')
-rw-r--r--llvm/test/Transforms/FunctionAttrs/2008-10-04-LocalMemory.ll10
1 files changed, 10 insertions, 0 deletions
diff --git a/llvm/test/Transforms/FunctionAttrs/2008-10-04-LocalMemory.ll b/llvm/test/Transforms/FunctionAttrs/2008-10-04-LocalMemory.ll
new file mode 100644
index 00000000000..50ca6412000
--- /dev/null
+++ b/llvm/test/Transforms/FunctionAttrs/2008-10-04-LocalMemory.ll
@@ -0,0 +1,10 @@
+; RUN: llvm-as < %s | opt -functionattrs | llvm-dis | grep readnone | count 2
+
+declare i32 @g(i32*) readnone
+
+define i32 @f() {
+ %x = alloca i32 ; <i32*> [#uses=2]
+ store i32 0, i32* %x
+ %y = call i32 @g(i32* %x) ; <i32> [#uses=1]
+ ret i32 %y
+}
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