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> -----Original Message-----
> From: Claudiu Zissulescu
> Sent: Tuesday, April 26, 2016 1:29 PM
> To: gcc-patches@gcc.gnu.org
> Cc: Claudiu Zissulescu <claz...@synopsys.com>; g...@amylaar.uk;
> francois.bed...@synopsys.com; jeremy.benn...@embecosm.com
> Subject: [PATCH] [ARC] Fix emitting jump tables for ARCv2
>
> The compact casesi option only make sens for ARCv1 cores. For ARCv2 cores
> we
> use the regular expansion.
>
> OK to apply?
> Claudiu
>
> gcc/
> 2016-04-26 Claudiu Zissulescu <claz...@synopsys.com>
>
> * common/config/arc/arc-common.c
> (arc_option_optimization_table):
> Disable compact casesi as default option.
> * config/arc/arc.c (arc_override_options): Enable compact casesi
> option for non-ARCv2 cores.
> * config/arc/arc.md (movsi_insn): Use @pcl relocation.
> (movsi_ne): Update assembly printing pattern.
> (casesi_load): Use short ld instruction.
> ---
> gcc/common/config/arc/arc-common.c | 1 -
> gcc/config/arc/arc.c | 7 +++++++
> gcc/config/arc/arc.md | 11 +++++++----
> 3 files changed, 14 insertions(+), 5 deletions(-)
>
> diff --git a/gcc/common/config/arc/arc-common.c
> b/gcc/common/config/arc/arc-common.c
> index 64fb053..17cc1bd 100644
> --- a/gcc/common/config/arc/arc-common.c
> +++ b/gcc/common/config/arc/arc-common.c
> @@ -56,7 +56,6 @@ static const struct default_options
> arc_option_optimization_table[] =
> { OPT_LEVELS_ALL, OPT_mbbit_peephole, NULL, 1 },
> { OPT_LEVELS_SIZE, OPT_mq_class, NULL, 1 },
> { OPT_LEVELS_SIZE, OPT_mcase_vector_pcrel, NULL, 1 },
> - { OPT_LEVELS_SIZE, OPT_mcompact_casesi, NULL, 1 },
> { OPT_LEVELS_NONE, 0, NULL, 0 }
> };
>
> diff --git a/gcc/config/arc/arc.c b/gcc/config/arc/arc.c
> index 6f2136e..be55c99 100644
> --- a/gcc/config/arc/arc.c
> +++ b/gcc/config/arc/arc.c
> @@ -812,6 +812,13 @@ arc_override_options (void)
> if (arc_size_opt_level == 3)
> optimize_size = 1;
>
> + /* Compact casesi is not a valid option for ARCv2 family, disable
> + it. */
> + if (TARGET_V2)
> + TARGET_COMPACT_CASESI = 0;
> + else if (optimize_size == 1)
> + TARGET_COMPACT_CASESI = 1;
> +
> if (flag_pic)
> target_flags |= MASK_NO_SDATA_SET;
>
> diff --git a/gcc/config/arc/arc.md b/gcc/config/arc/arc.md
> index 718443b..aec4b37 100644
> --- a/gcc/config/arc/arc.md
> +++ b/gcc/config/arc/arc.md
> @@ -713,7 +713,7 @@
> ror %0,((%1*2+1) & 0x3f) ;6
> mov%? %0,%1 ;7
> add %0,%S1 ;8
> - * return arc_get_unalign () ? \"add %0,pcl,%1-.+2\" : \"add %0,pcl,%1-.\";
> + add %0,pcl,%1@pcl
> mov%? %0,%S1%& ;10
> mov%? %0,%S1 ;11
> ld%?%U1 %0,%1%& ;12
> @@ -3467,8 +3467,8 @@
> ""
> "@
> * current_insn_predicate = 0; return \"sub%?.ne %0,%0,%0%&\";
> - mov_s.ne %0,%1
> - mov_s.ne %0,%1
> + * current_insn_predicate = 0; return \"mov%?.ne %0,%1\";
> + * current_insn_predicate = 0; return \"mov%?.ne %0,%1\";
> mov.ne %0,%1
> mov.ne %0,%S1"
> [(set_attr "type" "cmove")
> @@ -3777,7 +3777,10 @@
> switch (GET_MODE (diff_vec))
> {
> case SImode:
> - return \"ld.as %0,[%1,%2]%&\";
> + if ((which_alternative == 0) && TARGET_CODE_DENSITY)
> + return \"ld_s.as %0,[%1,%2]%&\";
> + else
> + return \"ld.as %0,[%1,%2]%&\";
> case HImode:
> if (ADDR_DIFF_VEC_FLAGS (diff_vec).offset_unsigned)
> return \"ld%_.as %0,[%1,%2]\";
> --
> 1.9.1
