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

1 files changed, 1 insertions, 1 deletions

diff --git a/src/cpu/o3/rename.hh b/src/cpu/o3/rename.hh
index 538dd9bb4..034087feb 100644
--- a/src/cpu/o3/rename.hh
+++ b/src/cpu/o3/rename.hh
@@ -158,7 +158,7 @@ class DefaultRename
     void setScoreboard(Scoreboard *_scoreboard);
 
     /** Drains the rename stage. */
-    void drain();
+    bool drain();
 
     /** Resumes execution after a drain. */
     void resume() { }