commit 12dd99dc308150a6beff32aafc824e1d6fec1139
author David Goodwin <david_goodwin@apple.com> Thu Nov 12 19:08:21 2009 +0000
committer David Goodwin <david_goodwin@apple.com> Thu Nov 12 19:08:21 2009 +0000
tree eb3d33bed5ca1f1a02cf1b69a12e4748ed96a268
parent 70d75ca3107ce05bc30ad3511aa669b9fab5eb90

Rename registers to break output dependencies in addition to anti-dependencies.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87015 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/AggressiveAntiDepBreaker.cpp

diff --git a/lib/CodeGen/AggressiveAntiDepBreaker.cpp b/lib/CodeGen/AggressiveAntiDepBreaker.cpp
index 17b50bd..b8cea27 100644
--- a/lib/CodeGen/AggressiveAntiDepBreaker.cpp
+++ b/lib/CodeGen/AggressiveAntiDepBreaker.cpp
@@ -285,7 +285,7 @@
 
   for (SUnit::pred_iterator P = SU->Preds.begin(), PE = SU->Preds.end();
        P != PE; ++P) {
-    if (P->getKind() == SDep::Anti) {
+    if ((P->getKind() == SDep::Anti) || (P->getKind() == SDep::Output)) {
       unsigned Reg = P->getReg();
       if (RegSet.count(Reg) != 0) {
         Edges.push_back(&*P);
@@ -716,7 +716,8 @@
         SDep *Edge = Edges[i];
         SUnit *NextSU = Edge->getSUnit();
         
-        if (Edge->getKind() != SDep::Anti) continue;
+        if ((Edge->getKind() != SDep::Anti) &&
+            (Edge->getKind() != SDep::Output)) continue;
         
         unsigned AntiDepReg = Edge->getReg();
         DEBUG(errs() << "\tAntidep reg: " << TRI->getName(AntiDepReg));