From: Evan Cheng <evan.cheng@apple.com>
Date: Fri, 23 Feb 2007 01:07:04 +0000 (+0000)
Subject: Temporay hook to enable register scavening for specific targets only.
X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=commitdiff_plain;h=5b7d5964c2b82607fcfafe7409957339753569ef

Temporay hook to enable register scavening for specific targets only.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34513 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/Target/MRegisterInfo.h b/include/llvm/Target/MRegisterInfo.h
index b3ec569aca5..96bd0e9cdcd 100644
--- a/include/llvm/Target/MRegisterInfo.h
+++ b/include/llvm/Target/MRegisterInfo.h
@@ -391,6 +391,12 @@ public:
     return false;
   }
 
+  /// requiresRegisterScavenging - returns true if the target requires (and
+  /// can make use of) the register scavenger.
+  virtual bool requiresRegisterScavenging() const {
+    return false;
+  }
+  
   /// hasFP - Return true if the specified function should have a dedicated frame
   /// pointer register. For most targets this is true only if the function has
   /// variable sized allocas or if frame pointer elimination is disabled.