Fix typos found by http://github.com/lyda/misspell-check
llvm-svn: 157885
diff --git a/llvm/lib/Target/ARM/ARMInstrThumb.td b/llvm/lib/Target/ARM/ARMInstrThumb.td
index ce6785a..66daa1c 100644
--- a/llvm/lib/Target/ARM/ARMInstrThumb.td
+++ b/llvm/lib/Target/ARM/ARMInstrThumb.td
@@ -1403,7 +1403,7 @@
// For round-trip assembly/disassembly, we have to handle a CPS instruction
// without any iflags. That's not, strictly speaking, valid syntax, but it's
-// a useful extention and assembles to defined behaviour (the insn does
+// a useful extension and assembles to defined behaviour (the insn does
// nothing).
def : tInstAlias<"cps$imod", (tCPS imod_op:$imod, 0)>;
def : tInstAlias<"cps$imod", (tCPS imod_op:$imod, 0)>;