Mips specific inline assembler constraint 'R'

'R' An address that can be sued in a non-macro load or store.
This patch includes a positive test case.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176453 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index c63ccce9cafb4ea7231a3982f6ac74634bd6a50b..9ff4ac08ee0eef77638973b487c8df10d3e640c3 100644 (file)
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -4486,6 +4486,9 @@ public:
     case 'x': // hilo register pair
       Info.setAllowsRegister();
       return true;
+    case 'R': // An address tha can be used in a non-macro load or store
+      Info.setAllowsMemory();
+      return true;
     }
   }
 

diff --git a/test/CodeGen/mips-constraint-regs.c b/test/CodeGen/mips-constraint-regs.c
index c42a888fcfbab1c9fe2e1524dc78c6721fff79c2..0d533f5fc771244b2cbfc4e25cd428c1f61eb35d 100644 (file)
--- a/test/CodeGen/mips-constraint-regs.c
+++ b/test/CodeGen/mips-constraint-regs.c
@@ -2,9 +2,7 @@
 // RUN: | FileCheck %s
 
 // This checks that the frontend will accept inline asm constraints
-// c', 'l' and 'x'. Semantic checking will happen in the
-// llvm backend. Any bad constraint letters will cause the frontend to
-// error out.
+// c', 'l' and 'x'.
 
 int main()
 {