From 90f95f88c6ce09c6744777dc9d140c3c77203b92 Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Sun, 14 Jun 2009 20:22:55 +0000
Subject: Move register allocation preference (or hint) from LiveInterval to
 MachineRegisterInfo. This allows more passes to set them.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73346 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/VirtRegMap.h | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'lib/CodeGen/VirtRegMap.h')

diff --git a/lib/CodeGen/VirtRegMap.h b/lib/CodeGen/VirtRegMap.h
index 507557d..fe767b7 100644
--- a/lib/CodeGen/VirtRegMap.h
+++ b/lib/CodeGen/VirtRegMap.h
@@ -31,6 +31,7 @@ namespace llvm {
   class LiveIntervals;
   class MachineInstr;
   class MachineFunction;
+  class MachineRegisterInfo;
   class TargetInstrInfo;
   class TargetRegisterInfo;
 
@@ -47,6 +48,7 @@ namespace llvm {
                           std::pair<unsigned, ModRef> > MI2VirtMapTy;
 
   private:
+    MachineRegisterInfo *MRI;
     const TargetInstrInfo *TII;
     const TargetRegisterInfo *TRI;
     MachineFunction *MF;
@@ -190,6 +192,9 @@ namespace llvm {
       grow();
     }
 
+    /// @brief returns the register allocation preference.
+    unsigned getRegAllocPref(unsigned virtReg);
+
     /// @brief records virtReg is a split live interval from SReg.
     void setIsSplitFromReg(unsigned virtReg, unsigned SReg) {
       Virt2SplitMap[virtReg] = SReg;
@@ -445,8 +450,7 @@ namespace llvm {
 
     /// FindUnusedRegisters - Gather a list of allocatable registers that
     /// have not been allocated to any virtual register.
-    bool FindUnusedRegisters(const TargetRegisterInfo *TRI,
-                             LiveIntervals* LIs);
+    bool FindUnusedRegisters(LiveIntervals* LIs);
 
     /// HasUnusedRegisters - Return true if there are any allocatable registers
     /// that have not been allocated to any virtual register.
-- 
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