PNaCl: Add "-pnacl-abi-simplify-{pre,post}opt" meta-passes to "opt"

These meta-passes will be used to replace the pass lists that are
currently in the pnacl-ld.py driver script in the NaCl repo.

I've moved the comments across from pnacl-ld.py and added a couple
more comments for ExpandByVal and StripMetadata.

Fix the declaration of createResolveAliasesPass().

BUG=https://code.google.com/p/nativeclient/issues/detail?id=3435
TEST=new *.ll tests + tested with change to pnacl-ld.py

Review URL: https://codereview.chromium.org/15669002

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/Transforms/NaCl/GlobalCleanup.cpp b/lib/Transforms/NaCl/GlobalCleanup.cpp
index 00e15b39a5..55886f8f7d 100644
--- a/lib/Transforms/NaCl/GlobalCleanup.cpp
+++ b/lib/Transforms/NaCl/GlobalCleanup.cpp
@@ -113,6 +113,6 @@ bool ResolveAliases::runOnModule(Module &M) {
   return Modified;
 }
 
-ModulePass *createResolveAliasesPass() {
+ModulePass *llvm::createResolveAliasesPass() {
   return new ResolveAliases();
 }