commit 99d9923608bfd0feff288d667c3e4f94c4132c26
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 4804b9c5c2e2e44d0a27d623963f99b2bc28c189
parent 3a9986f5d8432d2c8228311cabd9768ffaa23487

Fix overly conservative spill interval computation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11574 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/LiveIntervalAnalysis.cpp

diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp
index 64925b4..5079ef8 100644
--- a/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/lib/CodeGen/LiveIntervalAnalysis.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);
                     }
                 }
             }