PNaCl ABI: Remove use of @llvm.memset.p0i8.i64 (64-bit intrinsic variant)

Convert calls to this intrinsic to use the 32-bit variant instead.  Do
the same for the memcpy and memmove intrinsics too.

Change the PNaCl ABI verifier to check this argument.

BUG=https://code.google.com/p/nativeclient/issues/detail?id=3530
TEST=*.ll tests + PNaCl toolchain trybots

Review URL: https://codereview.chromium.org/18226003

2 files changed, 2 insertions, 0 deletions

diff --git a/include/llvm/InitializePasses.h b/include/llvm/InitializePasses.h
index 677c6253c4..73622fa7c0 100644
--- a/include/llvm/InitializePasses.h
+++ b/include/llvm/InitializePasses.h
@@ -278,6 +278,7 @@ void initializeBBVectorizePass(PassRegistry&);
 void initializeMachineFunctionPrinterPassPass(PassRegistry&);
 // @LOCALMOD-BEGIN
 void initializeAddPNaClExternalDeclsPass(PassRegistry&);
+void initializeCanonicalizeMemIntrinsicsPass(PassRegistry&);
 void initializeExpandArithWithOverflowPass(PassRegistry&);
 void initializeExpandByValPass(PassRegistry&);
 void initializeExpandConstantExprPass(PassRegistry&);
diff --git a/include/llvm/Transforms/NaCl.h b/include/llvm/Transforms/NaCl.h
index 2e2a7bc69d..43adb237dd 100644
--- a/include/llvm/Transforms/NaCl.h
+++ b/include/llvm/Transforms/NaCl.h
@@ -23,6 +23,7 @@ class Use;
 class Value;
 
 ModulePass *createAddPNaClExternalDeclsPass();
+ModulePass *createCanonicalizeMemIntrinsicsPass();
 ModulePass *createExpandArithWithOverflowPass();
 ModulePass *createExpandByValPass();
 FunctionPass *createExpandConstantExprPass();