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| author | Diego Novillo <dnovillo@google.com> | 2013-05-24 12:26:52 +0000 |
|---|---|---|
| committer | Diego Novillo <dnovillo@google.com> | 2013-05-24 12:26:52 +0000 |
| commit | 77226a03dca98e6237c1068f2652fe41bea7b687 (patch) | |
| tree | 3a8cb78a478d9e82735484091ae29647e3ec9002 /test/Feature | |
| parent | 49a6a8d8f2994249c81b7914b07015714748a55c (diff) | |
| download | llvm-77226a03dca98e6237c1068f2652fe41bea7b687.tar.gz llvm-77226a03dca98e6237c1068f2652fe41bea7b687.tar.bz2 llvm-77226a03dca98e6237c1068f2652fe41bea7b687.tar.xz | |
Add a new function attribute 'cold' to functions.
Other than recognizing the attribute, the patch does little else.
It changes the branch probability analyzer so that edges into
blocks postdominated by a cold function are given low weight.
Added analysis and code generation tests. Added documentation for the
new attribute.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182638 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Feature')
| -rw-r--r-- | test/Feature/cold.ll | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/test/Feature/cold.ll b/test/Feature/cold.ll new file mode 100644 index 0000000000..dcf79c5ba3 --- /dev/null +++ b/test/Feature/cold.ll @@ -0,0 +1,9 @@ +; RUN: llvm-as < %s | llvm-dis | FileCheck %s + +; CHECK: @fun() #0 +define void @fun() #0 { + ret void +} + +; CHECK: attributes #0 = { cold } +attributes #0 = { cold } |