From 2684ddd72e6274be60129d5510d9d5073463d0a4 Mon Sep 17 00:00:00 2001
From: Paul Robinson <paul_robinson@playstation.sony.com>
Date: Thu, 6 Feb 2014 00:07:05 +0000
Subject: Disable most IR-level transform passes on functions marked 'optnone'.
 Ideally only those transform passes that run at -O0 remain enabled, in
 reality we get as close as we reasonably can. Passes are responsible for
 disabling themselves, it's not the job of the pass manager to do it for them.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200892 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Scalar/MemCpyOptimizer.cpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'lib/Transforms/Scalar/MemCpyOptimizer.cpp')

diff --git a/lib/Transforms/Scalar/MemCpyOptimizer.cpp b/lib/Transforms/Scalar/MemCpyOptimizer.cpp
index d46b1ddcdd..3c24e6d364 100644
--- a/lib/Transforms/Scalar/MemCpyOptimizer.cpp
+++ b/lib/Transforms/Scalar/MemCpyOptimizer.cpp
@@ -1010,6 +1010,9 @@ bool MemCpyOpt::iterateOnFunction(Function &F) {
 // function.
 //
 bool MemCpyOpt::runOnFunction(Function &F) {
+  if (skipOptnoneFunction(F))
+    return false;
+
   bool MadeChange = false;
   MD = &getAnalysis<MemoryDependenceAnalysis>();
   TD = getAnalysisIfAvailable<DataLayout>();
-- 
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