From af4e64d0955aa47fd6e286ce48eeeed9a9ec7a4a 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.

llvm-svn: 200892
---
 llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp | 3 +++
 1 file changed, 3 insertions(+)

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

diff --git a/llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp b/llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp
index d46b1ddcdde..3c24e6d3643 100644
--- a/llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp
+++ b/llvm/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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