diff options
Diffstat (limited to 'gcc/config/m32r/m32r.c')
| -rw-r--r-- | gcc/config/m32r/m32r.c | 63 |
1 files changed, 47 insertions, 16 deletions
diff --git a/gcc/config/m32r/m32r.c b/gcc/config/m32r/m32r.c index a37ed65..a9ca24f 100644 --- a/gcc/config/m32r/m32r.c +++ b/gcc/config/m32r/m32r.c @@ -56,7 +56,7 @@ const char * m32r_sdata_string = M32R_SDATA_DEFAULT; enum m32r_sdata m32r_sdata; /* Scheduler support */ -int m32r_sched_odd_word_p; +static int m32r_sched_odd_word_p; /* Forward declaration. */ static void init_reg_tables PARAMS ((void)); @@ -66,6 +66,14 @@ static int m32r_valid_decl_attribute PARAMS ((tree, tree, tree, tree)); static void m32r_output_function_prologue PARAMS ((FILE *, HOST_WIDE_INT)); static void m32r_output_function_epilogue PARAMS ((FILE *, HOST_WIDE_INT)); + +static int m32r_adjust_cost PARAMS ((rtx, rtx, rtx, int)); +static int m32r_adjust_priority PARAMS ((rtx, int)); +static void m32r_sched_init PARAMS ((FILE *, int)); +static int m32r_sched_reorder PARAMS ((FILE *, int, rtx *, int *, int)); +static int m32r_variable_issue PARAMS ((FILE *, int, rtx, int)); +static int m32r_issue_rate PARAMS ((void)); + /* Initialize the GCC target structure. */ #undef TARGET_VALID_DECL_ATTRIBUTE @@ -76,6 +84,19 @@ static void m32r_output_function_epilogue PARAMS ((FILE *, HOST_WIDE_INT)); #undef TARGET_ASM_FUNCTION_EPILOGUE #define TARGET_ASM_FUNCTION_EPILOGUE m32r_output_function_epilogue +#undef TARGET_SCHED_ADJUST_COST +#define TARGET_SCHED_ADJUST_COST m32r_adjust_cost +#undef TARGET_SCHED_ADJUST_PRIORITY +#define TARGET_SCHED_ADJUST_PRIORITY m32r_adjust_priority +#undef TARGET_SCHED_ISSUE_RATE +#define TARGET_SCHED_ISSUE_RATE m32r_issue_rate +#undef TARGET_SCHED_VARIABLE_ISSUE +#define TARGET_SCHED_VARIABLE_ISSUE m32r_variable_issue +#undef TARGET_SCHED_INIT +#define TARGET_SCHED_INIT m32r_sched_init +#undef TARGET_SCHED_REORDER +#define TARGET_SCHED_REORDER m32r_sched_reorder + struct gcc_target targetm = TARGET_INITIALIZER; /* Called by OVERRIDE_OPTIONS to initialize various things. */ @@ -1471,7 +1492,7 @@ m32r_va_arg (valist, type) return addr_rtx; } -int +static int m32r_adjust_cost (insn, link, dep_insn, cost) rtx insn ATTRIBUTE_UNUSED; rtx link ATTRIBUTE_UNUSED; @@ -1497,7 +1518,7 @@ m32r_is_insn (insn) /* Increase the priority of long instructions so that the short instructions are scheduled ahead of the long ones. */ -int +static int m32r_adjust_priority (insn, priority) rtx insn; int priority; @@ -1512,7 +1533,7 @@ m32r_adjust_priority (insn, priority) /* Initialize for scheduling a group of instructions. */ -void +static void m32r_sched_init (stream, verbose) FILE * stream ATTRIBUTE_UNUSED; int verbose ATTRIBUTE_UNUSED; @@ -1523,15 +1544,18 @@ m32r_sched_init (stream, verbose) /* Reorder the schedulers priority list if needed */ -void -m32r_sched_reorder (stream, verbose, ready, n_ready) +static int +m32r_sched_reorder (stream, verbose, ready, n_readyp, clock) FILE * stream; int verbose; rtx * ready; - int n_ready; + int *n_readyp; + int clock ATTRIBUTE_UNUSED; { + int n_ready = *n_readyp; + if (TARGET_DEBUG) - return; + return m32r_issue_rate (); if (verbose <= 7) stream = (FILE *)0; @@ -1605,11 +1629,8 @@ m32r_sched_reorder (stream, verbose, ready, n_ready) memcpy (ready, new_head, sizeof (rtx) * n_ready); if (stream) { -#ifdef HAIFA - fprintf (stream, ";;\t\t::: New ready list: "); - debug_ready_list (ready, n_ready); -#else int i; + fprintf (stream, ";;\t\t::: New ready list: "); for (i = 0; i < n_ready; i++) { rtx insn = ready[i]; @@ -1627,17 +1648,27 @@ m32r_sched_reorder (stream, verbose, ready, n_ready) } fprintf (stream, "\n"); -#endif } } + return m32r_issue_rate (); +} + +/* Indicate how many instructions can be issued at the same time. + This is sort of a lie. The m32r can issue only 1 long insn at + once, but it can issue 2 short insns. The default therefore is + set at 2, but this can be overridden by the command line option + -missue-rate=1 */ +static int +m32r_issue_rate () +{ + return ((TARGET_LOW_ISSUE_RATE) ? 1 : 2); } - /* If we have a machine that can issue a variable # of instructions per cycle, indicate how many more instructions can be issued after the current one. */ -int -m32r_sched_variable_issue (stream, verbose, insn, how_many) +static int +m32r_variable_issue (stream, verbose, insn, how_many) FILE * stream; int verbose; rtx insn; |