Author: dgilmore
Date: 2012-08-21 01:47:27 -0400 (Tue, 21 Aug 2012)
New Revision: 4015
Modified:
trunk/osprey/be/cg/gra_mon/gra_interfere.cxx
Log:
Changed a test in INTERFERE_MGR::Create_End.
TARG_X8664 specific change. This tests determines
whether an interference "set" is stored as a vector or a bit vector.
This test will now generate the same result given the same input
parameters whether the compiler is built for 32 or 64 bit. See
associated comments concerning the issues at hand.
CR: Sun Chan
Modified: trunk/osprey/be/cg/gra_mon/gra_interfere.cxx
===================================================================
--- trunk/osprey/be/cg/gra_mon/gra_interfere.cxx 2012-08-20 20:04:42 UTC
(rev 4014)
+++ trunk/osprey/be/cg/gra_mon/gra_interfere.cxx 2012-08-21 05:47:27 UTC
(rev 4015)
@@ -1,5 +1,9 @@
/*
+ * Copyright (C) 2012 Advanced Micro Devices, Inc. All Rights Reserved.
+ */
+/*
+
Copyright (C) 2000, 2001 Silicon Graphics, Inc. All Rights Reserved.
This program is free software; you can redistribute it and/or modify it
@@ -173,7 +177,24 @@
INTERFERE_MGR::Create_End( void )
{
INTERFERE result;
+#ifndef TARG_X8664
size_t v_size = neighbor_count * sizeof(LRANGE*);
+#else
+ /* This change was made to ensure that register allocation is
+ * the same independent of the compiler being built -m32 or -m64.
+ * Note that the change may waste memory when the compiler is built
+ * -m64, but given the larger memory space this is less of an issue.
+ * TODO:
+ * Determine whether LRANGE_NEIGHBOR_ITER can be made to generate
+ * the same edge list independent of the storage medium (vector
+ * or bitset).
+ *
+ * For debugging purposes, add a CG option that will force the
+ * interference information to be stored as a bitset or vector.
+ */
+
+ size_t v_size = neighbor_count * 4;
+#endif
size_t s_size = LRANGE_SET_Size_Alloc_Size(neighbor_id_max + 1);
// Decide whether to represent it with a bitset or with a vector based on
------------------------------------------------------------------------------
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