Prune dexlang from the llvm compiler.

Change-Id: I176d5226f71e96368d5264d88d38c786ad416a97
diff --git a/src/compiler_llvm/gbc_expander.cc b/src/compiler_llvm/gbc_expander.cc
index 0f71512..c285c0b 100644
--- a/src/compiler_llvm/gbc_expander.cc
+++ b/src/compiler_llvm/gbc_expander.cc
@@ -1178,9 +1178,9 @@
 }
 
 void GBCExpanderPass::InsertStackOverflowCheck(llvm::Function& func) {
-  // DexLang generates all alloca instruction in the first basic block of the
-  // FUNC and also there's no any alloca instructions after the first non-alloca
-  // instruction
+  // All alloca instructions are generated in the first basic block of the
+  // function, and there are no alloca instructions after the first non-alloca
+  // instruction.
 
   llvm::BasicBlock* first_basic_block = &func.front();