PNaCl: Add ExpandGetElementPtr pass for converting GetElementPtr to arithmetic

This is similar to the GEP handling in visitGetElementPtr() in
lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp.

Once this pass is enabled, it will simplify the language to reduce the
set of constructs that a PNaCl translator needs to handle as part of a
stable wire format for PNaCl.

BUG=https://code.google.com/p/nativeclient/issues/detail?id=3343
TEST=test/Transforms/NaCl/expand-getelementptr.ll

Review URL: https://codereview.chromium.org/12849009

1 files changed, 2 insertions, 0 deletions

diff --git a/include/llvm/Transforms/NaCl.h b/include/llvm/Transforms/NaCl.h
index b5108fbf32..6782f6581f 100644
--- a/include/llvm/Transforms/NaCl.h
+++ b/include/llvm/Transforms/NaCl.h
@@ -12,11 +12,13 @@
 
 namespace llvm {
 
+class BasicBlockPass;
 class FunctionPass;
 class ModulePass;
 
 FunctionPass *createExpandConstantExprPass();
 ModulePass *createExpandCtorsPass();
+BasicBlockPass *createExpandGetElementPtrPass();
 ModulePass *createExpandTlsPass();
 ModulePass *createExpandTlsConstantExprPass();
 ModulePass *createExpandVarArgsPass();