commit 739e5e33d72df8fff8f1f0ec2f7b0fd637432b26
author Alkis Evlogimenos <alkis@evlogimenos.com> Wed Feb 18 03:35:38 2004 +0000
committer Alkis Evlogimenos <alkis@evlogimenos.com> Wed Feb 18 03:35:38 2004 +0000
tree 710467e552f5e56d415d07cf400dfcdc489db23b
parent 26583db8b6c45a3055b5d2b074039a8557e7df0c

Fix overly conservative spill interval computation.

llvm-svn: 11574

llvm/lib/CodeGen/LiveIntervals.cpp

diff --git a/llvm/lib/CodeGen/LiveIntervals.cpp b/llvm/lib/CodeGen/LiveIntervals.cpp
index 64925b4..5079ef8 100644
--- a/llvm/lib/CodeGen/LiveIntervals.cpp
+++ b/llvm/lib/CodeGen/LiveIntervals.cpp
@@ -191,10 +191,9 @@
                 if (mop.isRegister()) {
                     unsigned reg = mop.getReg();
                     if (rep(reg) == li.reg) {
-                        if (mop.isUse())
-                            li.addRange(index, index+2);
-                        else
-                            li.addRange(index+1, index+2);
+                        unsigned start = mop.isUse() ? index : index+1;
+                        unsigned end = mop.isDef() ? index+2 : index+1;
+                        li.addRange(start, end);
                     }
                 }
             }