Add passes for applying SFI sandboxing at the LLVM IR level

test/Transforms/NaCl/allocate-data-segment-size.ll

Index: test/Transforms/NaCl/allocate-data-segment-size.ll
diff --git a/test/Transforms/NaCl/allocate-data-segment-size.ll b/test/Transforms/NaCl/allocate-data-segment-size.ll
new file mode 100644
index 0000000000000000000000000000000000000000..df8f67a52aaefcc6934bf198a5f7df716bce9178
--- /dev/null
+++ b/test/Transforms/NaCl/allocate-data-segment-size.ll
@@ -0,0 +1,10 @@
+; RUN: opt %s -allocate-data-segment -S | FileCheck %s
+
+@var1 = global i32 11
+@var2 = global i32 22
+
+; Check for a bug in which we got the following, which FlattenGlobals
+; doesn't handle:
+; @__sfi_data_segment_size = constant i64 mul nuw (i64 ptrtoint (i32* getelementptr (i32* null, i32 1) to i64), i64 2)
+
+; CHECK: @__sfi_data_segment_size = constant i32 8