From: Alkis Evlogimenos <alkis@evlogimenos.com>
Date: Sat, 13 Dec 2003 05:50:19 +0000 (+0000)
Subject: Expire any active intervals left when register allocation is done.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=7d65a12fe660b10c5a10a3f0a655aa4e4a7fe365;p=oota-llvm.git

Expire any active intervals left when register allocation is done.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10448 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/RegAllocLinearScan.cpp b/lib/CodeGen/RegAllocLinearScan.cpp
index a50574c4546..8645a2b0448 100644
--- a/lib/CodeGen/RegAllocLinearScan.cpp
+++ b/lib/CodeGen/RegAllocLinearScan.cpp
@@ -269,6 +269,18 @@ bool RA::runOnMachineFunction(MachineFunction &fn) {
             }
         }
     }
+    // expire any remaining active intervals
+    for (IntervalPtrs::iterator i = active_.begin(); i != active_.end(); ++i) {
+        unsigned reg = (*i)->reg;
+        DEBUG(std::cerr << "\t\tinterval " << **i << " expired\n");
+        if (reg < MRegisterInfo::FirstVirtualRegister) {
+            clearReservedPhysReg(reg);
+        }
+        else {
+            p2vMap_[v2pMap_[reg]] = 0;
+        }
+        // remove interval from active
+    }
     
     DEBUG(std::cerr << "finished register allocation\n");
     DEBUG(printVirt2PhysMap());