The testcase is attached. Thanks, Wei.
On Wed, Jun 12, 2013 at 5:03 PM, H.J. Lu <hjl.to...@gmail.com> wrote: > On Wed, Jun 12, 2013 at 2:44 PM, Wei Mi <w...@google.com> wrote: >> Hi, >> >> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57518 >> >> pr57518 happened because update_equiv_regs in IRA marked a reg >> equivalent with a mem, lowered its mem_cost in scan_one_insn, set >> NO_REGS to its rclass, but didn't consider the reg was used in >> paradoxical subreg which prevented the reg from being replaced by mem >> in LRA phase. >> >> This patch is to check whether a reg is used in a paradoxical subreg >> in update_equiv_regs before reg is set as equivalent to a mem. >> >> bootstrap and regression test on x86_64-linux-gnu ok. Is it ok for >> trunk and gcc-4.8 branch? >> >> Thanks, >> Wei. > > You need a testcase to verify that the problem is fixed. > > -- > H.J.
patch_testcase
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