From fbe3e22474184e537fe74f4e86277056026f0514 Mon Sep 17 00:00:00 2001
From: Kevin Lim <ktlim@umich.edu>
Date: Thu, 6 Jul 2006 17:57:20 -0400
Subject: Fix the O3CPU to support the multi-pass method for checking if the
 system has fully drained.

src/cpu/o3/commit.hh:
src/cpu/o3/commit_impl.hh:
src/cpu/o3/decode.hh:
src/cpu/o3/decode_impl.hh:
src/cpu/o3/fetch.hh:
src/cpu/o3/fetch_impl.hh:
src/cpu/o3/iew.hh:
src/cpu/o3/iew_impl.hh:
src/cpu/o3/rename.hh:
src/cpu/o3/rename_impl.hh:
    Return a value so that the CPU can instantly return from draining if the pipeline is already drained.
src/cpu/o3/cpu.cc:
    Use values returned from pipeline stages so that the CPU can instantly return from draining if the pipeline is already drained.

--HG--
extra : convert_revision : d8ef6b811644ea67c8b40c4719273fa224105811
---
 src/cpu/o3/iew_impl.hh | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'src/cpu/o3/iew_impl.hh')

diff --git a/src/cpu/o3/iew_impl.hh b/src/cpu/o3/iew_impl.hh
index c3aa748ae..0d82645e3 100644
--- a/src/cpu/o3/iew_impl.hh
+++ b/src/cpu/o3/iew_impl.hh
@@ -354,11 +354,12 @@ DefaultIEW<Impl>::setScoreboard(Scoreboard *sb_ptr)
 }
 
 template <class Impl>
-void
+bool
 DefaultIEW<Impl>::drain()
 {
     // IEW is ready to drain at any time.
     cpu->signalDrained();
+    return true;
 }
 
 template <class Impl>
-- 
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