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Commit Graph

6 Commits

Author SHA1 Message Date
Werner Almesberger
2d49a73aad ubb-la/try.c: run the GUI with fake data 2013-01-30 21:20:08 -03:00
Werner Almesberger
65a8578bd2 ubb-la/Makefile: add SDL (may break "static") 2013-01-30 21:19:09 -03:00
Werner Almesberger
09de2454ef ubb-la/Makefile (CFLAGS): use more specific -O9 -fno-tree-cselim
Third time lucky, I hope. -fno-tree-cselim is much more specific than
disabling all optimization and results in a considerably less severe
performance reduction (about 30-40% of -O0).
2013-01-25 19:49:20 -03:00
Werner Almesberger
bac21bf8cb ubb-la/Makefile (CFLAGS): even -O1 isn't safe; use -O0 instead
While -O1 gets rid of the unexpected read in the simple code of a synthetic
test, it's still there in the more complex environment we have in ubb-la.c
Turning off optimization completely seems to do the trick.
2013-01-24 17:35:52 -03:00
Werner Almesberger
e1eea4fa86 ubb-la/Makefile (CFLAGS): -O9 is currently unsafe; use -O1
Higher optimizations can cause the generation of code that unexpectedly
does the equivalent of  PDFUNS = PDFUNS;

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56098
2013-01-24 15:31:59 -03:00
Werner Almesberger
2c5b3625a7 ubb-la/: data capture via UBB and MSC+DMA (WIP) 2013-01-23 11:54:23 -03:00