[cfe-commits] r48324 - /cfe/trunk/NOTES.txt

[Anders Carlsson]

Author: andersca
Date: Wed Mar 12 22:45:48 2008
New Revision: 48324

URL: http://llvm.org/viewvc/llvm-project?rev=48324&view=rev
Log:
Add note about asm constraints.

Modified:
    cfe/trunk/NOTES.txt

Modified: cfe/trunk/NOTES.txt
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/NOTES.txt?rev=48324&r1=48323&r2=48324&view=diff

==============================================================================
--- cfe/trunk/NOTES.txt (original)
+++ cfe/trunk/NOTES.txt Wed Mar 12 22:45:48 2008
@@ -110,3 +110,27 @@
 (1) If the user does not specify -triple, we default to the host triple.
 (2) If the user specifies a -arch, that overrides the arch in the host or
     specified triple. 
+
+//===---------------------------------------------------------------------===//
+
+
+verifyInputConstraint and verifyOutputConstraint should not return bool. 
+
+Instead we should return something like:
+
+enum VerifyConstraintResult {
+  Valid,
+  
+  // Output only
+  OutputOperandConstraintLacksEqualsCharacter,
+  MatchingConstraintNotValidInOutputOperand,
+
+  // Input only
+  InputOperandConstraintContainsEqualsCharacter,
+  MatchingConstraintReferencesInvalidOperandNumber,
+  
+  // Both
+  PercentConstraintUsedWithLastOperand
+};
+
+//===---------------------------------------------------------------------===//