diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 26 | ||||
| -rw-r--r-- | gcc/doc/tm.texi | 30 | ||||
| -rw-r--r-- | gcc/doc/tm.texi.in | 30 | ||||
| -rw-r--r-- | gcc/final.c | 51 | ||||
| -rw-r--r-- | gcc/system.h | 4 | ||||
| -rw-r--r-- | gcc/target.def | 32 | ||||
| -rw-r--r-- | gcc/targhooks.h | 5 |
7 files changed, 134 insertions, 44 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 5831956..9260c60 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,29 @@ +2010-10-19 DJ Delorie <dj@redhat.com> + + * doc/tm.texi.in (TARGET_ASM_JUMP_ALIGN_MAX_SKIP): New. + (TARGET_ASM_LABEL_ALIGN_AFTER_BARRIER_MAX_SKIP): Change to hook. + (TARGET_ASM_LOOP_ALIGN_MAX_SKIP): Likewise. + (TARGET_ASM_LABEL_ALIGN_MAX_SKIP): Likewise. + * doc/tm.texi: Regenerate. + * targhooks.h (default_label_align_after_barrier_max_skip, + default_loop_align_max_skip, default_label_align_max_skip, + default_jump_align_max_skip): Declare. + * target.def (label_align_after_barrier_max_skip): New. + (loop_align_max_skip): New. + (label_align_max_skip): New. + (jump_align_max_skip): New. + * system.h (poison): Add those macros to the list. + * final.c (LABEL_ALIGN_MAX_SKIP): Remove. + (LOOP_ALIGN_MAX_SKIP): Remove. + (LABEL_ALIGN_AFTER_BARRIER_MAX_SKIP): Remove. + (JUMP_ALIGN_MAX_SKIP): Remove. + (default_label_align_after_barrier_max_skip): New. + (default_loop_align_max_skip): New. + (default_label_align_max_skip): New. + (default_jump_align_max_skip): New. + (compute_alignments): Use the new hooks. + (shorten_branches): Likewise. + 2010-10-19 Richard Henderson <rth@redhat.com> * config/i386/i386.c (bdesc_multi_arg): Use fma4i_fmadd_<mode>. diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi index 941e2e1..a4f33a7 100644 --- a/gcc/doc/tm.texi +++ b/gcc/doc/tm.texi @@ -8978,6 +8978,12 @@ to set the variable @var{align_jumps} in the target's selection in @var{align_jumps} in a @code{JUMP_ALIGN} implementation. @end defmac +@deftypefn {Target Hook} int TARGET_ASM_JUMP_ALIGN_MAX_SKIP (rtx @var{label}) +The maximum number of bytes to skip before @var{label} when applying +@code{JUMP_ALIGN}. This works only if +@code{ASM_OUTPUT_MAX_SKIP_ALIGN} is defined. +@end deftypefn + @defmac LABEL_ALIGN_AFTER_BARRIER (@var{label}) The alignment (log base 2) to put in front of @var{label}, which follows a @code{BARRIER}. @@ -8987,11 +8993,11 @@ to be done at such a time. Most machine descriptions do not currently define the macro. @end defmac -@defmac LABEL_ALIGN_AFTER_BARRIER_MAX_SKIP -The maximum number of bytes to skip when applying +@deftypefn {Target Hook} int TARGET_ASM_LABEL_ALIGN_AFTER_BARRIER_MAX_SKIP (rtx @var{label}) +The maximum number of bytes to skip before @var{label} when applying @code{LABEL_ALIGN_AFTER_BARRIER}. This works only if @code{ASM_OUTPUT_MAX_SKIP_ALIGN} is defined. -@end defmac +@end deftypefn @defmac LOOP_ALIGN (@var{label}) The alignment (log base 2) to put in front of @var{label}, which follows @@ -9007,10 +9013,11 @@ to set the variable @code{align_loops} in the target's selection in @code{align_loops} in a @code{LOOP_ALIGN} implementation. @end defmac -@defmac LOOP_ALIGN_MAX_SKIP -The maximum number of bytes to skip when applying @code{LOOP_ALIGN}. -This works only if @code{ASM_OUTPUT_MAX_SKIP_ALIGN} is defined. -@end defmac +@deftypefn {Target Hook} int TARGET_ASM_LOOP_ALIGN_MAX_SKIP (rtx @var{label}) +The maximum number of bytes to skip when applying @code{LOOP_ALIGN} to +@var{label}. This works only if @code{ASM_OUTPUT_MAX_SKIP_ALIGN} is +defined. +@end deftypefn @defmac LABEL_ALIGN (@var{label}) The alignment (log base 2) to put in front of @var{label}. @@ -9023,10 +9030,11 @@ to set the variable @code{align_labels} in the target's selection in @code{align_labels} in a @code{LABEL_ALIGN} implementation. @end defmac -@defmac LABEL_ALIGN_MAX_SKIP -The maximum number of bytes to skip when applying @code{LABEL_ALIGN}. -This works only if @code{ASM_OUTPUT_MAX_SKIP_ALIGN} is defined. -@end defmac +@deftypefn {Target Hook} int TARGET_ASM_LABEL_ALIGN_MAX_SKIP (rtx @var{label}) +The maximum number of bytes to skip when applying @code{LABEL_ALIGN} +to @var{label}. This works only if @code{ASM_OUTPUT_MAX_SKIP_ALIGN} +is defined. +@end deftypefn @defmac ASM_OUTPUT_SKIP (@var{stream}, @var{nbytes}) A C statement to output to the stdio stream @var{stream} an assembler diff --git a/gcc/doc/tm.texi.in b/gcc/doc/tm.texi.in index 604802b..a9592b1 100644 --- a/gcc/doc/tm.texi.in +++ b/gcc/doc/tm.texi.in @@ -8958,6 +8958,12 @@ to set the variable @var{align_jumps} in the target's selection in @var{align_jumps} in a @code{JUMP_ALIGN} implementation. @end defmac +@hook TARGET_ASM_JUMP_ALIGN_MAX_SKIP +The maximum number of bytes to skip before @var{label} when applying +@code{JUMP_ALIGN}. This works only if +@code{ASM_OUTPUT_MAX_SKIP_ALIGN} is defined. +@end deftypefn + @defmac LABEL_ALIGN_AFTER_BARRIER (@var{label}) The alignment (log base 2) to put in front of @var{label}, which follows a @code{BARRIER}. @@ -8967,11 +8973,11 @@ to be done at such a time. Most machine descriptions do not currently define the macro. @end defmac -@defmac LABEL_ALIGN_AFTER_BARRIER_MAX_SKIP -The maximum number of bytes to skip when applying +@hook TARGET_ASM_LABEL_ALIGN_AFTER_BARRIER_MAX_SKIP +The maximum number of bytes to skip before @var{label} when applying @code{LABEL_ALIGN_AFTER_BARRIER}. This works only if @code{ASM_OUTPUT_MAX_SKIP_ALIGN} is defined. -@end defmac +@end deftypefn @defmac LOOP_ALIGN (@var{label}) The alignment (log base 2) to put in front of @var{label}, which follows @@ -8987,10 +8993,11 @@ to set the variable @code{align_loops} in the target's selection in @code{align_loops} in a @code{LOOP_ALIGN} implementation. @end defmac -@defmac LOOP_ALIGN_MAX_SKIP -The maximum number of bytes to skip when applying @code{LOOP_ALIGN}. -This works only if @code{ASM_OUTPUT_MAX_SKIP_ALIGN} is defined. -@end defmac +@hook TARGET_ASM_LOOP_ALIGN_MAX_SKIP +The maximum number of bytes to skip when applying @code{LOOP_ALIGN} to +@var{label}. This works only if @code{ASM_OUTPUT_MAX_SKIP_ALIGN} is +defined. +@end deftypefn @defmac LABEL_ALIGN (@var{label}) The alignment (log base 2) to put in front of @var{label}. @@ -9003,10 +9010,11 @@ to set the variable @code{align_labels} in the target's selection in @code{align_labels} in a @code{LABEL_ALIGN} implementation. @end defmac -@defmac LABEL_ALIGN_MAX_SKIP -The maximum number of bytes to skip when applying @code{LABEL_ALIGN}. -This works only if @code{ASM_OUTPUT_MAX_SKIP_ALIGN} is defined. -@end defmac +@hook TARGET_ASM_LABEL_ALIGN_MAX_SKIP +The maximum number of bytes to skip when applying @code{LABEL_ALIGN} +to @var{label}. This works only if @code{ASM_OUTPUT_MAX_SKIP_ALIGN} +is defined. +@end deftypefn @defmac ASM_OUTPUT_SKIP (@var{stream}, @var{nbytes}) A C statement to output to the stdio stream @var{stream} an assembler diff --git a/gcc/final.c b/gcc/final.c index 5409a3d..fb4ab26 100644 --- a/gcc/final.c +++ b/gcc/final.c @@ -68,6 +68,7 @@ along with GCC; see the file COPYING3. If not see #include "intl.h" #include "basic-block.h" #include "target.h" +#include "targhooks.h" #include "debug.h" #include "expr.h" #include "cfglayout.h" @@ -497,33 +498,41 @@ get_attr_min_length (rtx insn) #define LABEL_ALIGN(LABEL) align_labels_log #endif -#ifndef LABEL_ALIGN_MAX_SKIP -#define LABEL_ALIGN_MAX_SKIP align_labels_max_skip -#endif - #ifndef LOOP_ALIGN #define LOOP_ALIGN(LABEL) align_loops_log #endif -#ifndef LOOP_ALIGN_MAX_SKIP -#define LOOP_ALIGN_MAX_SKIP align_loops_max_skip -#endif - #ifndef LABEL_ALIGN_AFTER_BARRIER #define LABEL_ALIGN_AFTER_BARRIER(LABEL) 0 #endif -#ifndef LABEL_ALIGN_AFTER_BARRIER_MAX_SKIP -#define LABEL_ALIGN_AFTER_BARRIER_MAX_SKIP 0 -#endif - #ifndef JUMP_ALIGN #define JUMP_ALIGN(LABEL) align_jumps_log #endif -#ifndef JUMP_ALIGN_MAX_SKIP -#define JUMP_ALIGN_MAX_SKIP align_jumps_max_skip -#endif +int +default_label_align_after_barrier_max_skip (rtx insn ATTRIBUTE_UNUSED) +{ + return 0; +} + +int +default_loop_align_max_skip (rtx insn ATTRIBUTE_UNUSED) +{ + return align_loops_max_skip; +} + +int +default_label_align_max_skip (rtx insn ATTRIBUTE_UNUSED) +{ + return align_labels_max_skip; +} + +int +default_jump_align_max_skip (rtx insn ATTRIBUTE_UNUSED) +{ + return align_jumps_max_skip; +} #ifndef ADDR_VEC_ALIGN static int @@ -731,7 +740,7 @@ compute_alignments (void) continue; } max_log = LABEL_ALIGN (label); - max_skip = LABEL_ALIGN_MAX_SKIP; + max_skip = targetm.asm_out.label_align_max_skip (label); FOR_EACH_EDGE (e, ei, bb->preds) { @@ -775,7 +784,7 @@ compute_alignments (void) if (max_log < log) { max_log = log; - max_skip = JUMP_ALIGN_MAX_SKIP; + max_skip = targetm.asm_out.jump_align_max_skip (label); } } /* In case block is frequent and reached mostly by non-fallthru edge, @@ -792,7 +801,7 @@ compute_alignments (void) if (max_log < log) { max_log = log; - max_skip = LOOP_ALIGN_MAX_SKIP; + max_skip = targetm.asm_out.loop_align_max_skip (label); } } LABEL_TO_ALIGNMENT (label) = max_log; @@ -925,7 +934,7 @@ shorten_branches (rtx first ATTRIBUTE_UNUSED) if (max_log < log) { max_log = log; - max_skip = LABEL_ALIGN_MAX_SKIP; + max_skip = targetm.asm_out.label_align_max_skip (insn); } } /* ADDR_VECs only take room if read-only data goes into the text @@ -938,7 +947,7 @@ shorten_branches (rtx first ATTRIBUTE_UNUSED) if (max_log < log) { max_log = log; - max_skip = LABEL_ALIGN_MAX_SKIP; + max_skip = targetm.asm_out.label_align_max_skip (insn); } } LABEL_TO_ALIGNMENT (insn) = max_log; @@ -958,7 +967,7 @@ shorten_branches (rtx first ATTRIBUTE_UNUSED) if (max_log < log) { max_log = log; - max_skip = LABEL_ALIGN_AFTER_BARRIER_MAX_SKIP; + max_skip = targetm.asm_out.label_align_after_barrier_max_skip (label); } break; } diff --git a/gcc/system.h b/gcc/system.h index 5131fed..7e5b048 100644 --- a/gcc/system.h +++ b/gcc/system.h @@ -717,7 +717,9 @@ extern void fancy_abort (const char *, int, const char *) ATTRIBUTE_NORETURN; TRAMPOLINE_ADJUST_ADDRESS STATIC_CHAIN STATIC_CHAIN_INCOMING \ RETURN_POPS_ARGS UNITS_PER_SIMD_WORD OVERRIDE_OPTIONS \ OPTIMIZATION_OPTIONS CLASS_LIKELY_SPILLED_P \ - USING_SJLJ_EXCEPTIONS TARGET_UNWIND_INFO + USING_SJLJ_EXCEPTIONS TARGET_UNWIND_INFO \ + LABEL_ALIGN_MAX_SKIP LOOP_ALIGN_MAX_SKIP \ + LABEL_ALIGN_AFTER_BARRIER_MAX_SKIP JUMP_ALIGN_MAX_SKIP /* Other obsolete target macros, or macros that used to be in target headers and were not used, and may be obsolete or may never have diff --git a/gcc/target.def b/gcc/target.def index cdfa903..82f3040 100644 --- a/gcc/target.def +++ b/gcc/target.def @@ -101,6 +101,38 @@ DEFHOOKPOD DEFHOOKPOD (aligned_op, "*", struct asm_int_op, TARGET_ASM_ALIGNED_INT_OP) DEFHOOKPOD (unaligned_op, "*", struct asm_int_op, TARGET_ASM_UNALIGNED_INT_OP) +/* The maximum number of bytes to skip when applying + LABEL_ALIGN_AFTER_BARRIER. */ +DEFHOOK +(label_align_after_barrier_max_skip, + "", + int, (rtx label), + default_label_align_after_barrier_max_skip) + +/* The maximum number of bytes to skip when applying + LOOP_ALIGN. */ +DEFHOOK +(loop_align_max_skip, + "", + int, (rtx label), + default_loop_align_max_skip) + +/* The maximum number of bytes to skip when applying + LABEL_ALIGN. */ +DEFHOOK +(label_align_max_skip, + "", + int, (rtx label), + default_label_align_max_skip) + +/* The maximum number of bytes to skip when applying + JUMP_ALIGN. */ +DEFHOOK +(jump_align_max_skip, + "", + int, (rtx label), + default_jump_align_max_skip) + /* Try to output the assembler code for an integer object whose value is given by X. SIZE is the size of the object in bytes and ALIGNED_P indicates whether it is aligned. Return true if diff --git a/gcc/targhooks.h b/gcc/targhooks.h index f594679..7b640cc 100644 --- a/gcc/targhooks.h +++ b/gcc/targhooks.h @@ -162,3 +162,8 @@ extern enum unwind_info_type default_debug_unwind_info (void); extern enum unwind_info_type default_except_unwind_info (void); extern enum unwind_info_type dwarf2_except_unwind_info (void); extern enum unwind_info_type sjlj_except_unwind_info (void); + +extern int default_label_align_after_barrier_max_skip (rtx); +extern int default_loop_align_max_skip (rtx); +extern int default_label_align_max_skip (rtx); +extern int default_jump_align_max_skip (rtx); |