Improve DSE in the presence of calls

Jeff Law law@redhat.com
Mon Jun 20 15:34:00 GMT 2011


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On 06/18/11 03:10, Ramana Radhakrishnan wrote:
> This seems to have triggered
> 
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49452
> 
> on arm-linux-gnueabi
> 
> Might well be a DUP of PR49429 but I haven't looked at it yet.
It is effectively a duplicate; with the notable difference that instead
of an explicit memcpy call, the memcpy appears in the RTL


> > (insn 38 37 39 2 (set (mem:BLK (scratch) [0 A8])
>         (unspec:BLK [
>                 (reg/f:SI 13 sp)
>                 (reg/f:SI 11 fp)
>             ] UNSPEC_PRLG_STK))
> /home/ramrad01/sources/fsf/trunk/gcc/testsuite/gcc.c-torture/execute/comp-goto-2.c:11
> -1
>      (nil))


Jeff
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