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Re: [tree-ssa] Java byte compiler status
Diego Novillo writes:
> On Tue, 2003-07-22 at 13:34, Andrew Haley wrote:
> > Perhaps if I check in the front end changes, some tree-SSA guru can
> > have a look at the trees produced for the failing test cases and tell
> > me if I'm doing something wrong.
> Could you try disabling tree optimizers individually? The ones that
> have been giving me a few failures lately are DCE, must alias and the
> dominator optimizers. Try -fno-tree-dce, -fno-tree-must-alias and
Fascinating. Using -fno-tree-dce fixes some of the failures but
(wonderfully!) breaks the compiler with
G19990302_02.java: In class `G19990302_02':
G19990302_02.java: In method `G19990302_02.main(java.lang.String)':
G19990302_02.java:12: internal compiler error: in coalesce_ssa_name, at tree-ssa.c:1538
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
i.e. the test case passes with -O but fails with -O -fno-tree-dce.
Anyway, with -O -fno-tree-dce I have 13 failures. 4 of these are new
ICEs like the one above.
With -O -fno-tree-dce -fno-tree-must-alias -fno-tree-dominator-opts I
have 7 failures. No ICEs.
With -O -fdisable-tree-ssa I have 1 execution failure. I guess that
one is probably a front end bug.