From abaa15898f3a06733b6e9abf8bb64b321b6143d5 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Tue, 7 Feb 2006 20:16:30 +0000
Subject: [PATCH] Implement getConstraintType for PPC.

llvm-svn: 26042
---
 lib/Target/PowerPC/PPCISelLowering.cpp | 17 +++++++++++++++++
 lib/Target/PowerPC/PPCISelLowering.h   |  1 +
 2 files changed, 18 insertions(+)

diff --git a/lib/Target/PowerPC/PPCISelLowering.cpp b/lib/Target/PowerPC/PPCISelLowering.cpp
index 76bcf1e5c36..8e454105a0f 100644
--- a/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -980,6 +980,23 @@ PPCTargetLowering::InsertAtEndOfBasicBlock(MachineInstr *MI,
   return BB;
 }
 
+/// getConstraintType - Given a constraint letter, return the type of
+/// constraint it is for this target.
+PPCTargetLowering::ConstraintType 
+PPCTargetLowering::getConstraintType(char ConstraintLetter) const {
+  switch (ConstraintLetter) {
+  default: break;
+  case 'b':
+  case 'r':
+  case 'f':
+  case 'v':
+  case 'y':
+    return C_RegisterClass;
+  }  
+  return TargetLowering::getConstraintType(ConstraintLetter);
+}
+
+
 std::vector<unsigned> PPCTargetLowering::
 getRegForInlineAsmConstraint(const std::string &Constraint) const {
   if (Constraint.size() == 1) {
diff --git a/lib/Target/PowerPC/PPCISelLowering.h b/lib/Target/PowerPC/PPCISelLowering.h
index bcf4c6ffe48..681d41a8534 100644
--- a/lib/Target/PowerPC/PPCISelLowering.h
+++ b/lib/Target/PowerPC/PPCISelLowering.h
@@ -97,6 +97,7 @@ namespace llvm {
     virtual MachineBasicBlock *InsertAtEndOfBasicBlock(MachineInstr *MI,
                                                        MachineBasicBlock *MBB);
     
+    ConstraintType getConstraintType(char ConstraintLetter) const;
     std::vector<unsigned> 
       getRegForInlineAsmConstraint(const std::string &Constraint) const;
     bool isOperandValidForConstraint(SDOperand Op, char ConstraintLetter);