From ad487f4ef2968c5a11bb729e65fda2f2e4b155c8 Mon Sep 17 00:00:00 2001
From: Nate Begeman <natebegeman@mac.com>
Date: Tue, 22 Apr 2008 05:03:19 +0000
Subject: [PATCH] Add some basic ARM asm constraints

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50085 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Basic/Targets.cpp | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index a06d5e647f..c4ffa0d65e 100644
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -804,7 +804,16 @@ public:
     NumAliases = 0;
   }
   virtual bool validateAsmConstraint(char c,
-                                     TargetInfo::ConstraintInfo &Info) const {
+                                     TargetInfo::ConstraintInfo &info) const {
+    switch (c) {
+    default: 
+    case 'l': // r0-r7
+    case 'h': // r8-r15
+    case 'w': // VFP Floating point register single precision
+    case 'P': // VFP Floating point register double precision
+      info = (TargetInfo::ConstraintInfo)(info|TargetInfo::CI_AllowsRegister);
+      return true;
+    }
     return false;
   }
   virtual const char *getClobbers() const {
-- 
2.50.1