[m-rev.] diff: --gc accurate => --no-optimize-dups

Fergus Henderson fjh at cs.mu.OZ.AU
Fri Nov 28 19:39:55 AEDT 2003

Estimated hours taken: 12
Branches: main

	Disable the dup_elim optimization when accurate GC is enabled,
	because it does not correctly preserve the accurate GC layout

Workspace: /home/jupiter/fjh/ws-jupiter/mercury
Index: compiler/handle_options.m
RCS file: /home/mercury1/repository/mercury/compiler/handle_options.m,v
retrieving revision 1.191
diff -u -d -r1.191 handle_options.m
--- compiler/handle_options.m	12 Nov 2003 16:15:53 -0000	1.191
+++ compiler/handle_options.m	25 Nov 2003 07:01:36 -0000
@@ -974,6 +974,8 @@
 	% which has a different label layout structure),
 	% so we need to disable it when tracing.
 	option_implies(procid_stack_layout, optimize_dups, bool(no)),
+	% likewise for accurate GC
+	option_implies(agc_stack_layout, optimize_dups, bool(no)),
 	% XXX deforestation and constraint propagation do not perform
 	% folding on polymorphic predicates correctly with

Fergus Henderson <fjh at cs.mu.oz.au>  |  "I have always known that the pursuit
The University of Melbourne         |  of excellence is a lethal habit"
WWW: <http://www.cs.mu.oz.au/~fjh>  |     -- the last words of T. S. Garp.
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