Rebased PNaCl localmods in LLVM to 223109

test/Transforms/MinSFI/sandbox-memory-accesses-unhandled-instruction.ll

Index: test/Transforms/MinSFI/sandbox-memory-accesses-unhandled-instruction.ll
diff --git a/test/Transforms/MinSFI/sandbox-memory-accesses-unhandled-instruction.ll b/test/Transforms/MinSFI/sandbox-memory-accesses-unhandled-instruction.ll
new file mode 100644
index 0000000000000000000000000000000000000000..e08baa6aa76f17084d0745eeb50d4d3e732459f4
--- /dev/null
+++ b/test/Transforms/MinSFI/sandbox-memory-accesses-unhandled-instruction.ll
@@ -0,0 +1,14 @@
+; RUN: not opt %s -minsfi-sandbox-memory-accesses -S 2>&1 | FileCheck %s
+
+; The SandboxMemoryAccess pass should fail if it encounters an unexpected 
+; instruction such as this 'atomicrmw'. This mechanism protects MinSFI 
+; from unsafe operations which it does not handle appearing in the bitcode. 
+; This could be a result of a bug in the compiler or a newly introduced
+; LLVM instruction.
+
+define i32 @test_unhandled_instr(i32* %ptr) {
+  %old = atomicrmw add i32* %ptr, i32 1 acquire
+  ret i32 %old
+}
+
+; CHECK: LLVM ERROR: SandboxMemoryAccesses: unexpected instruction with pointer-type operands