On 07/20/2011 01:48 PM, Jakub Jelinek wrote:
On Wed, Jul 20, 2011 at 01:28:46PM -0700, Michael Eager wrote:
On 07/20/2011 01:23 PM, Jakub Jelinek wrote:
On Wed, Jul 20, 2011 at 01:07:40PM -0700, Michael Eager wrote:
I've run into a problem with this change when building microblaze-xilinx-elf.
When compiling _divdi3.o, cselib_expand_value_rtx_1 returns a huge rtx
tree for variable _r1 when max_depth is greater than 17. If -g is
specified, this later results in attempting to generate a DWARF location
list much larger than the 0xffff size limit, resulting in an assert failure.
I think Alex is working on a patch which will hopefully improve it.
In 4.6-RH in the mean time we are defaulting max-vartrack-expr-depth to 12
instead, perhaps that would be better than 10.
I'm OK with a value of 12.
The patch with s/10/12/g is preapproved.
Jakub
Checked in revision 176538.
--
Michael Eager ea...@eagercon.com
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