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fabs(0.0) < 0 optimization not working on gcc-3.3 on sh4?
- From: Dan Kegel <dank at kegel dot com>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 09 Jul 2003 09:32:20 -0700
- Subject: fabs(0.0) < 0 optimization not working on gcc-3.3 on sh4?
I'm just now getting into testing gcc cross-compilers.
I have a shiny new build-and-test script (http://kegel.com/crosstool),
and am trying to analyze the failures it finds.
I ran gcc-3.3's c-torture/execute test suite last night
on sh4, and the only failures were:
Running target sh4-unknown-linux-gnu
FAIL: gcc.c-torture/execute/20020720-1.c compilation, -O1
UNRESOLVED: gcc.c-torture/execute/20020720-1.c execution, -O1
FAIL: gcc.c-torture/execute/20020720-1.c compilation, -O2
UNRESOLVED: gcc.c-torture/execute/20020720-1.c execution, -O2
FAIL: gcc.c-torture/execute/20020720-1.c compilation, -O3 -fomit-frame-pointer
UNRESOLVED: gcc.c-torture/execute/20020720-1.c execution, -O3 -fomit-frame-pointer
FAIL: gcc.c-torture/execute/20020720-1.c compilation, -O3 -g
UNRESOLVED: gcc.c-torture/execute/20020720-1.c execution, -O3 -g
FAIL: gcc.c-torture/execute/20020720-1.c compilation, -Os
UNRESOLVED: gcc.c-torture/execute/20020720-1.c execution, -Os
Looks like fabs(0.0) < 0 isn't recognized by the optimizer
as false at compile time on sh4...
anyone run into this before? I guess it's not a horrible problem,
but I'm curious whether it's been fixed, and where one goes
to ask about things like this. There's nothing in bugzilla;
should I file a bug there?
- Dan
--
Dan Kegel
http://www.kegel.com
http://counter.li.org/cgi-bin/runscript/display-person.cgi?user=78045