[Bug target/46470] "add $0x8,%rsp" no longer optimized to pop

[rth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46470

--- Comment #2 from Richard Henderson <rth at gcc dot gnu.org> 2010-11-16 
22:22:19 UTC ---
Author: rth
Date: Tue Nov 16 22:22:13 2010
New Revision: 166829

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=166829
Log:
PR target/46470
        * recog.c (peep2_attempt): Convert frame-related info when possible.
        (peep2_fill_buffer): Allow frame-related insns into the buffer.
        (peephole2_optimize): Allow peep2_attempt to fail.

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr46470.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/recog.c