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| author | Richard Sandiford <richard.sandiford@linaro.org> | 2017-09-12 13:27:55 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2017-09-12 13:27:55 +0000 |
| commit | e0bd6c9f0aa67d88bbb20019362a4572fc5fac3c (patch) | |
| tree | 3ca0e90f453bcc3361eb758707d8da86a656477f /gcc/config/riscv/riscv.c | |
| parent | 41defab318e4b5d8b87ba2b3512b02cb49c748a9 (diff) | |
| download | gcc-e0bd6c9f0aa67d88bbb20019362a4572fc5fac3c.zip gcc-e0bd6c9f0aa67d88bbb20019362a4572fc5fac3c.tar.gz gcc-e0bd6c9f0aa67d88bbb20019362a4572fc5fac3c.tar.bz2 | |
Turn SLOW_UNALIGNED_ACCESS into a target hook
2017-09-12 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>
gcc/
* defaults.h (SLOW_UNALIGNED_ACCESS): Delete.
* target.def (slow_unaligned_access): New hook.
* targhooks.h (default_slow_unaligned_access): Declare.
* targhooks.c (default_slow_unaligned_access): New function.
* doc/tm.texi.in (SLOW_UNALIGNED_ACCESS): Replace with...
(TARGET_SLOW_UNALIGNED_ACCESS): ...this.
* doc/tm.texi: Regenerate.
* config/alpha/alpha.h (SLOW_UNALIGNED_ACCESS): Delete.
* config/arm/arm.h (SLOW_UNALIGNED_ACCESS): Delete.
* config/i386/i386.h (SLOW_UNALIGNED_ACCESS): Delete commented-out
definition.
* config/powerpcspe/powerpcspe.h (SLOW_UNALIGNED_ACCESS): Delete.
* config/powerpcspe/powerpcspe.c (TARGET_SLOW_UNALIGNED_ACCESS):
Redefine.
(rs6000_slow_unaligned_access): New function.
(rs6000_emit_move): Use it instead of SLOW_UNALIGNED_ACCESS.
(expand_block_compare): Likewise.
(expand_strn_compare): Likewise.
(rs6000_rtx_costs): Likewise.
* config/riscv/riscv.h (SLOW_UNALIGNED_ACCESS): Delete.
(riscv_slow_unaligned_access): Likewise.
* config/riscv/riscv.c (riscv_slow_unaligned_access): Rename to...
(riscv_slow_unaligned_access_p): ...this and make static.
(riscv_option_override): Update accordingly.
(riscv_slow_unaligned_access): New function.
(TARGET_SLOW_UNALIGNED_ACCESS): Redefine.
* config/rs6000/rs6000.h (SLOW_UNALIGNED_ACCESS): Delete.
* config/rs6000/rs6000.c (TARGET_SLOW_UNALIGNED_ACCESS): Redefine.
(rs6000_slow_unaligned_access): New function.
(rs6000_emit_move): Use it instead of SLOW_UNALIGNED_ACCESS.
(rs6000_rtx_costs): Likewise.
* config/rs6000/rs6000-string.c (expand_block_compare)
(expand_strn_compare): Use targetm.slow_unaligned_access instead
of SLOW_UNALIGNED_ACCESS.
* config/tilegx/tilegx.h (SLOW_UNALIGNED_ACCESS): Delete.
* config/tilepro/tilepro.h (SLOW_UNALIGNED_ACCESS): Delete.
* calls.c (expand_call): Use targetm.slow_unaligned_access instead
of SLOW_UNALIGNED_ACCESS.
* expmed.c (simple_mem_bitfield_p): Likewise.
* expr.c (alignment_for_piecewise_move): Likewise.
(emit_group_load_1): Likewise.
(emit_group_store): Likewise.
(copy_blkmode_from_reg): Likewise.
(emit_push_insn): Likewise.
(expand_assignment): Likewise.
(store_field): Likewise.
(expand_expr_real_1): Likewise.
* gimple-fold.c (gimple_fold_builtin_memory_op): Likewise.
* lra-constraints.c (simplify_operand_subreg): Likewise.
* stor-layout.c (bit_field_mode_iterator::next_mode): Likewise.
* gimple-ssa-store-merging.c: Likewise in block comment at start
of file.
* tree-ssa-strlen.c: Include target.h.
(handle_builtin_memcmp): Use targetm.slow_unaligned_access instead
of SLOW_UNALIGNED_ACCESS.
* system.h (SLOW_UNALIGNED_ACCESS): Poison.
Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r252009
Diffstat (limited to 'gcc/config/riscv/riscv.c')
| -rw-r--r-- | gcc/config/riscv/riscv.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/gcc/config/riscv/riscv.c b/gcc/config/riscv/riscv.c index 62472e9..0e440f7 100644 --- a/gcc/config/riscv/riscv.c +++ b/gcc/config/riscv/riscv.c @@ -217,7 +217,7 @@ struct riscv_cpu_info { /* Global variables for machine-dependent things. */ /* Whether unaligned accesses execute very slowly. */ -bool riscv_slow_unaligned_access; +static bool riscv_slow_unaligned_access_p; /* Which tuning parameters to use. */ static const struct riscv_tune_info *tune_info; @@ -3744,8 +3744,8 @@ riscv_option_override (void) /* Use -mtune's setting for slow_unaligned_access, even when optimizing for size. For architectures that trap and emulate unaligned accesses, the performance cost is too great, even for -Os. */ - riscv_slow_unaligned_access = (cpu->tune_info->slow_unaligned_access - || TARGET_STRICT_ALIGN); + riscv_slow_unaligned_access_p = (cpu->tune_info->slow_unaligned_access + || TARGET_STRICT_ALIGN); /* If the user hasn't specified a branch cost, use the processor's default. */ @@ -3966,6 +3966,14 @@ riscv_cannot_copy_insn_p (rtx_insn *insn) return recog_memoized (insn) >= 0 && get_attr_cannot_copy (insn); } +/* Implement TARGET_SLOW_UNALIGNED_ACCESS. */ + +static bool +riscv_slow_unaligned_access (machine_mode, unsigned int) +{ + return riscv_slow_unaligned_access_p; +} + /* Initialize the GCC target structure. */ #undef TARGET_ASM_ALIGNED_HI_OP #define TARGET_ASM_ALIGNED_HI_OP "\t.half\t" @@ -4102,6 +4110,9 @@ riscv_cannot_copy_insn_p (rtx_insn *insn) #undef TARGET_MODES_TIEABLE_P #define TARGET_MODES_TIEABLE_P riscv_modes_tieable_p +#undef TARGET_SLOW_UNALIGNED_ACCESS +#define TARGET_SLOW_UNALIGNED_ACCESS riscv_slow_unaligned_access + struct gcc_target targetm = TARGET_INITIALIZER; #include "gt-riscv.h" |