On Sun, May 29, 2016 at 3:13 PM, H.J. Lu <hjl.to...@gmail.com> wrote: > On Mon, May 9, 2016 at 10:37 AM, H.J. Lu <hjl.to...@gmail.com> wrote: >> On Fri, Apr 22, 2016 at 6:03 AM, Uros Bizjak <ubiz...@gmail.com> wrote: >>> On Fri, Apr 22, 2016 at 2:54 PM, H.J. Lu <hjl.to...@gmail.com> wrote: >>>> For -fno-plt, we load the external function address via the GOT slot >>>> so that linker won't create an PLT entry for extern function address. >>>> >>>> Tested on x86-64. I also built GCC with -fno-plt. It removes 99% PLT >>>> entries. OK for trunk? >>>> >>>> H.J. >>>> -- >>>> gcc/ >>>> >>>> PR target/pr67400 >>>> * config/i386/i386-protos.h (ix86_force_load_from_GOT_p): New. >>>> * config/i386/i386.c (ix86_force_load_from_GOT_p): New function. >>>> (ix86_legitimate_address_p): Allow UNSPEC_GOTPCREL for >>>> ix86_force_load_from_GOT_p returns true. >>>> (ix86_print_operand_address): Support UNSPEC_GOTPCREL if >>>> ix86_force_load_from_GOT_p returns true. >>>> (ix86_expand_move): Load the external function address via the >>>> GOT slot if ix86_force_load_from_GOT_p returns true. >>>> * config/i386/predicates.md (x86_64_immediate_operand): Return >>>> false if ix86_force_load_from_GOT_p returns true. >>>> >>>> gcc/testsuite/ >>>> >>>> PR target/pr67400 >>>> * gcc.target/i386/pr67400-1.c: New test. >>>> * gcc.target/i386/pr67400-2.c: Likewise. >>>> * gcc.target/i386/pr67400-3.c: Likewise. >>>> * gcc.target/i386/pr67400-4.c: Likewise. >>> >>> Please get someone that knows this linker magic to review the >>> functionality first. Maybe Jakub can help? >>> >> >> Hi Jakub, >> >> Can you review this patch? >> >> Thanks. > > PING. >
PING. -- H.J.
