Add support for the inline asm constraint 'K'.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156282 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/Mips/inlineasm_constraint.ll b/test/CodeGen/Mips/inlineasm_constraint.ll
index f053e0e..04bd513 100644
--- a/test/CodeGen/Mips/inlineasm_constraint.ll
+++ b/test/CodeGen/Mips/inlineasm_constraint.ll
@@ -21,6 +21,12 @@
 ; CHECK: #NO_APP
   tail call i32 asm sideeffect "addi $0,$1,$2\0A\09 ", "=r,r,J"(i32 7, i16 0) nounwind
 
+; Now K with 64
+; CHECK: #APP
+; CHECK: addu ${{[0-9]+}},${{[0-9]+}},64
+; CHECK: #NO_APP	
+  tail call i16 asm sideeffect "addu $0,$1,$2\0A\09 ", "=r,r,K"(i16 7, i16 64) nounwind
+
   ret i32 0
 }