From b53da24424c79a824fa74ec3160efe0bbe9627eb Mon Sep 17 00:00:00 2001 From: Adam Nemet Date: Sat, 19 Sep 2009 20:23:55 +0000 Subject: mips.opt (mrelax-pic-calls): New option. * config/mips/mips.opt (mrelax-pic-calls): New option. * config/mips/mips.c (mips_strip_unspec_address): Move it up in the file. (mips_unspec_call): Change "unspec_call" expander into this. (mips_strip_unspec_call): New function. (mips_got_load): Call mips_unspec_call instead of gen_unspec_call. (mips16_build_call_stub): Fix comment for fp_code. Adjust call to MIPS_CALL. (mips_cfg_in_reorg): New function. (mips16_lay_out_constants): Use it to decide whether to call CFG-aware insn splitting. (r10k_insert_cache_barriers): Move CFG set-up code from here to mips_reorg. Move DF set-up code from here ... (mips_df_reorg): ... to here. Call r10k_insert_cache_barriers from here. (mips_reorg): Call mips_df_reorg instead of r10k_insert_cache_barriers. Move CFG set-up code here from r10k_insert_cache_barriers. (mips_call_expr_from_insn): New function. (mips_pic_call_symbol_from_set): Likewise. (mips_find_pic_call_symbol): Likewise. (mips_annotate_pic_call_expr): Likewise. (mips_get_pic_call_symbol): Likewise. (mips_annotate_pic_calls): Likewise. (mips_override_options): Disable -mrelax-pic-calls unless PIC calls are used. (mips_set_mips16_mode): Disable -mrelax-pic-calls for MIPS16. * config/mips/mips-protos.h (mips_get_pic_call_symbol): Declare it. * config/mips/mips.h (MIPS_CALL): Use it to print the .reloc directive. * config/mips/mips.md (UNSPEC_CALL_ATTR): New unspec. (unspec_call): Remove it. (sibcall_internal, sibcall_value_internal, sibcall_value_multiple_internal, call_internal, call_split, call_value_internal, call_value_split, call_value_multiple_internal, call_value_multiple_split): Pass SIZE_OPNO to MIPS_CALL. (call_internal_direct, call_direct_split, call_value_internal_direct, call_value_direct_split): Pass -1 as SIZE_OPNO to MIPS_CALL. * configure.ac : Add test for .reloc R_MIPS_JALR. * configure: Regenerate. * doc/invoke.texi (Option Summary): Add -mrelax-pic-calls and -mno-relax-pic-calls. (MIPS Options): Document -mrelax-pic-calls and -mno-relax-pic-calls. testsuite/ * gcc.target/mips/mips.exp: Add relax-pic-calls under -mfoo/-mno-foo options. (mips-dg-options): Make -mrelax-pic-calls imply -mno-plt, -mabicalls and -mexplicit-relocs. * gcc.target/mips/call-1.c: New test. * gcc.target/mips/call-2.c: New test. * gcc.target/mips/call-3.c: New test. * gcc.target/mips/lazy-binding-1.c: Add MIPS-specific dg-options. * gcc.dg/tree-ssa/loop-1.c: Likewise. From-SVN: r151890 --- gcc/doc/invoke.texi | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) (limited to 'gcc/doc') diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index ad8e51c..5a547e2 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -705,7 +705,8 @@ Objective-C and Objective-C++ Dialects}. -mflush-func=@var{func} -mno-flush-func @gol -mbranch-cost=@var{num} -mbranch-likely -mno-branch-likely @gol -mfp-exceptions -mno-fp-exceptions @gol --mvr4130-align -mno-vr4130-align -msynci -mno-synci} +-mvr4130-align -mno-vr4130-align -msynci -mno-synci @gol +-mrelax-pic-calls -mno-relax-pic-calls} @emph{MMIX Options} @gccoptlist{-mlibfuncs -mno-libfuncs -mepsilon -mno-epsilon -mabi=gnu @gol @@ -13906,6 +13907,20 @@ When compiling code for single processor systems, it is generally safe to use @code{synci}. However, on many multi-core (SMP) systems, it will not invalidate the instruction caches on all cores and may lead to undefined behavior. + +@item -mrelax-pic-calls +@itemx -mno-relax-pic-calls +@opindex mrelax-pic-calls +Try to turn PIC calls that are normally dispatched via register +@code{$25} into direct calls. This is only possible if the linker can +resolve the destination at link-time and if the destination is within +range for a direct call. + +@option{-mrelax-pic-calls} is the default if GCC was configured to use +an assembler and a linker that supports the @code{.reloc} assembly +directive and @code{-mexplicit-relocs} is in effect. With +@code{-mno-explicit-relocs}, this optimization can be performed by the +assembler and the linker alone without help from the compiler. @end table @node MMIX Options -- cgit v1.1