commit 7eb2b1892b080bfd2d90b62a8308c722bb627d31
author Alkis Evlogimenos <alkis@evlogimenos.com> Tue Jul 20 13:28:17 2004 +0000
committer Alkis Evlogimenos <alkis@evlogimenos.com> Tue Jul 20 13:28:17 2004 +0000
tree 87fd3cae4e0659f9829f0b86e58084df9af9e77d
parent f616d8328ce7e67d75551520356b32d428c9d338

Add function to clear all virtual->physical mappings but not assigned
stack slots. This is in preparation for the iterative linear scan.

llvm-svn: 15032

llvm/lib/CodeGen/VirtRegMap.h

diff --git a/llvm/lib/CodeGen/VirtRegMap.h b/llvm/lib/CodeGen/VirtRegMap.h
index e9bfe76..c76a222 100644
--- a/llvm/lib/CodeGen/VirtRegMap.h
+++ b/llvm/lib/CodeGen/VirtRegMap.h
@@ -87,6 +87,11 @@
             v2pMap_[virtReg] = NO_PHYS_REG;
         }
 
+        void clearAllVirt() {
+            v2pMap_.clear();
+            grow();
+        }
+
         bool hasStackSlot(unsigned virtReg) const {
             return getStackSlot(virtReg) != NO_STACK_SLOT;
         }