Inline asm multiple alternative constraints development phase 2 - improved basic logic, added initial platform support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117667 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPCISelLowering.h b/lib/Target/PowerPC/PPCISelLowering.h
index 700816f..2e1b99b 100644
--- a/lib/Target/PowerPC/PPCISelLowering.h
+++ b/lib/Target/PowerPC/PPCISelLowering.h
@@ -308,6 +308,12 @@
                                             bool is8bit, unsigned Opcode) const;
     
     ConstraintType getConstraintType(const std::string &Constraint) const;
+
+    /// Examine constraint string and operand type and determine a weight value.
+    /// The operand object must already have been set up with the operand type.
+    ConstraintWeight getSingleConstraintMatchWeight(
+      AsmOperandInfo &info, const char *constraint) const;
+
     std::pair<unsigned, const TargetRegisterClass*> 
       getRegForInlineAsmConstraint(const std::string &Constraint,
                                    EVT VT) const;