#include "params.h"
#include "cfgloop.h"
#include "opts.h"
+#include "tree-pass.h"
+#include "context.h"
/* Define the specific costs for a given cpu. */
return ggc_alloc_cleared_machine_function ();
}
-static void
-s390_option_override (void)
-{
- unsigned int i;
- cl_deferred_option *opt;
- vec<cl_deferred_option> *v =
- (vec<cl_deferred_option> *) s390_deferred_options;
-
- if (v)
- FOR_EACH_VEC_ELT (*v, i, opt)
- {
- switch (opt->opt_index)
- {
- case OPT_mhotpatch:
- s390_hotpatch_trampoline_halfwords = (opt->value) ?
- s390_hotpatch_trampoline_halfwords_default : -1;
- break;
- case OPT_mhotpatch_:
- {
- int val;
-
- val = integral_argument (opt->arg);
- if (val == -1)
- {
- /* argument is not a plain number */
- error ("argument to %qs should be a non-negative integer",
- "-mhotpatch=");
- break;
- }
- else if (val > s390_hotpatch_trampoline_halfwords_max)
- {
- error ("argument to %qs is too large (max. %d)",
- "-mhotpatch=", s390_hotpatch_trampoline_halfwords_max);
- break;
- }
- s390_hotpatch_trampoline_halfwords = val;
- break;
- }
- default:
- gcc_unreachable ();
- }
- }
-
- /* Set up function hooks. */
- init_machine_status = s390_init_machine_status;
-
- /* Architecture mode defaults according to ABI. */
- if (!(target_flags_explicit & MASK_ZARCH))
- {
- if (TARGET_64BIT)
- target_flags |= MASK_ZARCH;
- else
- target_flags &= ~MASK_ZARCH;
- }
-
- /* Set the march default in case it hasn't been specified on
- cmdline. */
- if (s390_arch == PROCESSOR_max)
- {
- s390_arch_string = TARGET_ZARCH? "z900" : "g5";
- s390_arch = TARGET_ZARCH ? PROCESSOR_2064_Z900 : PROCESSOR_9672_G5;
- s390_arch_flags = processor_flags_table[(int)s390_arch];
- }
-
- /* Determine processor to tune for. */
- if (s390_tune == PROCESSOR_max)
- {
- s390_tune = s390_arch;
- s390_tune_flags = s390_arch_flags;
- }
-
- /* Sanity checks. */
- if (TARGET_ZARCH && !TARGET_CPU_ZARCH)
- error ("z/Architecture mode not supported on %s", s390_arch_string);
- if (TARGET_64BIT && !TARGET_ZARCH)
- error ("64-bit ABI not supported in ESA/390 mode");
-
- /* Use hardware DFP if available and not explicitly disabled by
- user. E.g. with -m31 -march=z10 -mzarch */
- if (!(target_flags_explicit & MASK_HARD_DFP) && TARGET_DFP)
- target_flags |= MASK_HARD_DFP;
-
- /* Enable hardware transactions if available and not explicitly
- disabled by user. E.g. with -m31 -march=zEC12 -mzarch */
- if (!(target_flags_explicit & MASK_OPT_HTM) && TARGET_CPU_HTM && TARGET_ZARCH)
- target_flags |= MASK_OPT_HTM;
-
- if (TARGET_HARD_DFP && !TARGET_DFP)
- {
- if (target_flags_explicit & MASK_HARD_DFP)
- {
- if (!TARGET_CPU_DFP)
- error ("hardware decimal floating point instructions"
- " not available on %s", s390_arch_string);
- if (!TARGET_ZARCH)
- error ("hardware decimal floating point instructions"
- " not available in ESA/390 mode");
- }
- else
- target_flags &= ~MASK_HARD_DFP;
- }
-
- if ((target_flags_explicit & MASK_SOFT_FLOAT) && TARGET_SOFT_FLOAT)
- {
- if ((target_flags_explicit & MASK_HARD_DFP) && TARGET_HARD_DFP)
- error ("-mhard-dfp can%'t be used in conjunction with -msoft-float");
-
- target_flags &= ~MASK_HARD_DFP;
- }
-
- /* Set processor cost function. */
- switch (s390_tune)
- {
- case PROCESSOR_2084_Z990:
- s390_cost = &z990_cost;
- break;
- case PROCESSOR_2094_Z9_109:
- s390_cost = &z9_109_cost;
- break;
- case PROCESSOR_2097_Z10:
- s390_cost = &z10_cost;
- break;
- case PROCESSOR_2817_Z196:
- s390_cost = &z196_cost;
- break;
- case PROCESSOR_2827_ZEC12:
- s390_cost = &zEC12_cost;
- break;
- default:
- s390_cost = &z900_cost;
- }
-
- if (TARGET_BACKCHAIN && TARGET_PACKED_STACK && TARGET_HARD_FLOAT)
- error ("-mbackchain -mpacked-stack -mhard-float are not supported "
- "in combination");
-
- if (s390_stack_size)
- {
- if (s390_stack_guard >= s390_stack_size)
- error ("stack size must be greater than the stack guard value");
- else if (s390_stack_size > 1 << 16)
- error ("stack size must not be greater than 64k");
- }
- else if (s390_stack_guard)
- error ("-mstack-guard implies use of -mstack-size");
-
-#ifdef TARGET_DEFAULT_LONG_DOUBLE_128
- if (!(target_flags_explicit & MASK_LONG_DOUBLE_128))
- target_flags |= MASK_LONG_DOUBLE_128;
-#endif
-
- if (s390_tune == PROCESSOR_2097_Z10
- || s390_tune == PROCESSOR_2817_Z196
- || s390_tune == PROCESSOR_2827_ZEC12)
- {
- maybe_set_param_value (PARAM_MAX_UNROLLED_INSNS, 100,
- global_options.x_param_values,
- global_options_set.x_param_values);
- maybe_set_param_value (PARAM_MAX_UNROLL_TIMES, 32,
- global_options.x_param_values,
- global_options_set.x_param_values);
- maybe_set_param_value (PARAM_MAX_COMPLETELY_PEELED_INSNS, 2000,
- global_options.x_param_values,
- global_options_set.x_param_values);
- maybe_set_param_value (PARAM_MAX_COMPLETELY_PEEL_TIMES, 64,
- global_options.x_param_values,
- global_options_set.x_param_values);
- }
-
- maybe_set_param_value (PARAM_MAX_PENDING_LIST_LENGTH, 256,
- global_options.x_param_values,
- global_options_set.x_param_values);
- /* values for loop prefetching */
- maybe_set_param_value (PARAM_L1_CACHE_LINE_SIZE, 256,
- global_options.x_param_values,
- global_options_set.x_param_values);
- maybe_set_param_value (PARAM_L1_CACHE_SIZE, 128,
- global_options.x_param_values,
- global_options_set.x_param_values);
- /* s390 has more than 2 levels and the size is much larger. Since
- we are always running virtualized assume that we only get a small
- part of the caches above l1. */
- maybe_set_param_value (PARAM_L2_CACHE_SIZE, 1500,
- global_options.x_param_values,
- global_options_set.x_param_values);
- maybe_set_param_value (PARAM_PREFETCH_MIN_INSN_TO_MEM_RATIO, 2,
- global_options.x_param_values,
- global_options_set.x_param_values);
- maybe_set_param_value (PARAM_SIMULTANEOUS_PREFETCHES, 6,
- global_options.x_param_values,
- global_options_set.x_param_values);
-
- /* This cannot reside in s390_option_optimization_table since HAVE_prefetch
- requires the arch flags to be evaluated already. Since prefetching
- is beneficial on s390, we enable it if available. */
- if (flag_prefetch_loop_arrays < 0 && HAVE_prefetch && optimize >= 3)
- flag_prefetch_loop_arrays = 1;
-
- /* Use the alternative scheduling-pressure algorithm by default. */
- maybe_set_param_value (PARAM_SCHED_PRESSURE_ALGORITHM, 2,
- global_options.x_param_values,
- global_options_set.x_param_values);
-
- if (TARGET_TPF)
- {
- /* Don't emit DWARF3/4 unless specifically selected. The TPF
- debuggers do not yet support DWARF 3/4. */
- if (!global_options_set.x_dwarf_strict)
- dwarf_strict = 1;
- if (!global_options_set.x_dwarf_version)
- dwarf_version = 2;
- }
-}
-
/* Map for smallest class containing reg regno. */
const enum reg_class regclass_map[FIRST_PSEUDO_REGISTER] =
}
}
-/* Expand the prologue into a bunch of separate insns. */
-void
-s390_emit_prologue (void)
+/* A pass run immediately before shrink-wrapping and prologue and epilogue
+ generation. */
+
+static unsigned int
+s390_early_mach (void)
{
- rtx insn, addr;
- rtx temp_reg;
- int i;
- int offset;
- int next_fpr = 0;
+ rtx insn;
/* Try to get rid of the FPR clobbers. */
s390_optimize_nonescaping_tx ();
/* Annotate all constant pool references to let the scheduler know
they implicitly use the base register. */
-
- push_topmost_sequence ();
-
for (insn = get_insns (); insn; insn = NEXT_INSN (insn))
if (INSN_P (insn))
{
annotate_constant_pool_refs (&PATTERN (insn));
df_insn_rescan (insn);
}
+ return 0;
+}
+
+namespace {
+
+const pass_data pass_data_s390_early_mach =
+{
+ RTL_PASS, /* type */
+ "early_mach", /* name */
+ OPTGROUP_NONE, /* optinfo_flags */
+ false, /* has_gate */
+ true, /* has_execute */
+ TV_MACH_DEP, /* tv_id */
+ 0, /* properties_required */
+ 0, /* properties_provided */
+ 0, /* properties_destroyed */
+ 0, /* todo_flags_start */
+ ( TODO_df_verify | TODO_df_finish
+ | TODO_verify_rtl_sharing ), /* todo_flags_finish */
+};
- pop_topmost_sequence ();
+class pass_s390_early_mach : public rtl_opt_pass
+{
+public:
+ pass_s390_early_mach (gcc::context *ctxt)
+ : rtl_opt_pass (pass_data_s390_early_mach, ctxt)
+ {}
+
+ /* opt_pass methods: */
+ unsigned int execute () { return s390_early_mach (); }
+
+}; // class pass_s390_early_mach
+
+} // anon namespace
+
+/* Expand the prologue into a bunch of separate insns. */
+
+void
+s390_emit_prologue (void)
+{
+ rtx insn, addr;
+ rtx temp_reg;
+ int i;
+ int offset;
+ int next_fpr = 0;
/* Choose best register to use for temp use within prologue.
See below for why TPF must use the register 1. */
}
}
+static void
+s390_option_override (void)
+{
+ unsigned int i;
+ cl_deferred_option *opt;
+ vec<cl_deferred_option> *v =
+ (vec<cl_deferred_option> *) s390_deferred_options;
+
+ if (v)
+ FOR_EACH_VEC_ELT (*v, i, opt)
+ {
+ switch (opt->opt_index)
+ {
+ case OPT_mhotpatch:
+ s390_hotpatch_trampoline_halfwords = (opt->value) ?
+ s390_hotpatch_trampoline_halfwords_default : -1;
+ break;
+ case OPT_mhotpatch_:
+ {
+ int val;
+
+ val = integral_argument (opt->arg);
+ if (val == -1)
+ {
+ /* argument is not a plain number */
+ error ("argument to %qs should be a non-negative integer",
+ "-mhotpatch=");
+ break;
+ }
+ else if (val > s390_hotpatch_trampoline_halfwords_max)
+ {
+ error ("argument to %qs is too large (max. %d)",
+ "-mhotpatch=", s390_hotpatch_trampoline_halfwords_max);
+ break;
+ }
+ s390_hotpatch_trampoline_halfwords = val;
+ break;
+ }
+ default:
+ gcc_unreachable ();
+ }
+ }
+
+ /* Set up function hooks. */
+ init_machine_status = s390_init_machine_status;
+
+ /* Architecture mode defaults according to ABI. */
+ if (!(target_flags_explicit & MASK_ZARCH))
+ {
+ if (TARGET_64BIT)
+ target_flags |= MASK_ZARCH;
+ else
+ target_flags &= ~MASK_ZARCH;
+ }
+
+ /* Set the march default in case it hasn't been specified on
+ cmdline. */
+ if (s390_arch == PROCESSOR_max)
+ {
+ s390_arch_string = TARGET_ZARCH? "z900" : "g5";
+ s390_arch = TARGET_ZARCH ? PROCESSOR_2064_Z900 : PROCESSOR_9672_G5;
+ s390_arch_flags = processor_flags_table[(int)s390_arch];
+ }
+
+ /* Determine processor to tune for. */
+ if (s390_tune == PROCESSOR_max)
+ {
+ s390_tune = s390_arch;
+ s390_tune_flags = s390_arch_flags;
+ }
+
+ /* Sanity checks. */
+ if (TARGET_ZARCH && !TARGET_CPU_ZARCH)
+ error ("z/Architecture mode not supported on %s", s390_arch_string);
+ if (TARGET_64BIT && !TARGET_ZARCH)
+ error ("64-bit ABI not supported in ESA/390 mode");
+
+ /* Use hardware DFP if available and not explicitly disabled by
+ user. E.g. with -m31 -march=z10 -mzarch */
+ if (!(target_flags_explicit & MASK_HARD_DFP) && TARGET_DFP)
+ target_flags |= MASK_HARD_DFP;
+
+ /* Enable hardware transactions if available and not explicitly
+ disabled by user. E.g. with -m31 -march=zEC12 -mzarch */
+ if (!(target_flags_explicit & MASK_OPT_HTM) && TARGET_CPU_HTM && TARGET_ZARCH)
+ target_flags |= MASK_OPT_HTM;
+
+ if (TARGET_HARD_DFP && !TARGET_DFP)
+ {
+ if (target_flags_explicit & MASK_HARD_DFP)
+ {
+ if (!TARGET_CPU_DFP)
+ error ("hardware decimal floating point instructions"
+ " not available on %s", s390_arch_string);
+ if (!TARGET_ZARCH)
+ error ("hardware decimal floating point instructions"
+ " not available in ESA/390 mode");
+ }
+ else
+ target_flags &= ~MASK_HARD_DFP;
+ }
+
+ if ((target_flags_explicit & MASK_SOFT_FLOAT) && TARGET_SOFT_FLOAT)
+ {
+ if ((target_flags_explicit & MASK_HARD_DFP) && TARGET_HARD_DFP)
+ error ("-mhard-dfp can%'t be used in conjunction with -msoft-float");
+
+ target_flags &= ~MASK_HARD_DFP;
+ }
+
+ /* Set processor cost function. */
+ switch (s390_tune)
+ {
+ case PROCESSOR_2084_Z990:
+ s390_cost = &z990_cost;
+ break;
+ case PROCESSOR_2094_Z9_109:
+ s390_cost = &z9_109_cost;
+ break;
+ case PROCESSOR_2097_Z10:
+ s390_cost = &z10_cost;
+ break;
+ case PROCESSOR_2817_Z196:
+ s390_cost = &z196_cost;
+ break;
+ case PROCESSOR_2827_ZEC12:
+ s390_cost = &zEC12_cost;
+ break;
+ default:
+ s390_cost = &z900_cost;
+ }
+
+ if (TARGET_BACKCHAIN && TARGET_PACKED_STACK && TARGET_HARD_FLOAT)
+ error ("-mbackchain -mpacked-stack -mhard-float are not supported "
+ "in combination");
+
+ if (s390_stack_size)
+ {
+ if (s390_stack_guard >= s390_stack_size)
+ error ("stack size must be greater than the stack guard value");
+ else if (s390_stack_size > 1 << 16)
+ error ("stack size must not be greater than 64k");
+ }
+ else if (s390_stack_guard)
+ error ("-mstack-guard implies use of -mstack-size");
+
+#ifdef TARGET_DEFAULT_LONG_DOUBLE_128
+ if (!(target_flags_explicit & MASK_LONG_DOUBLE_128))
+ target_flags |= MASK_LONG_DOUBLE_128;
+#endif
+
+ if (s390_tune == PROCESSOR_2097_Z10
+ || s390_tune == PROCESSOR_2817_Z196
+ || s390_tune == PROCESSOR_2827_ZEC12)
+ {
+ maybe_set_param_value (PARAM_MAX_UNROLLED_INSNS, 100,
+ global_options.x_param_values,
+ global_options_set.x_param_values);
+ maybe_set_param_value (PARAM_MAX_UNROLL_TIMES, 32,
+ global_options.x_param_values,
+ global_options_set.x_param_values);
+ maybe_set_param_value (PARAM_MAX_COMPLETELY_PEELED_INSNS, 2000,
+ global_options.x_param_values,
+ global_options_set.x_param_values);
+ maybe_set_param_value (PARAM_MAX_COMPLETELY_PEEL_TIMES, 64,
+ global_options.x_param_values,
+ global_options_set.x_param_values);
+ }
+
+ maybe_set_param_value (PARAM_MAX_PENDING_LIST_LENGTH, 256,
+ global_options.x_param_values,
+ global_options_set.x_param_values);
+ /* values for loop prefetching */
+ maybe_set_param_value (PARAM_L1_CACHE_LINE_SIZE, 256,
+ global_options.x_param_values,
+ global_options_set.x_param_values);
+ maybe_set_param_value (PARAM_L1_CACHE_SIZE, 128,
+ global_options.x_param_values,
+ global_options_set.x_param_values);
+ /* s390 has more than 2 levels and the size is much larger. Since
+ we are always running virtualized assume that we only get a small
+ part of the caches above l1. */
+ maybe_set_param_value (PARAM_L2_CACHE_SIZE, 1500,
+ global_options.x_param_values,
+ global_options_set.x_param_values);
+ maybe_set_param_value (PARAM_PREFETCH_MIN_INSN_TO_MEM_RATIO, 2,
+ global_options.x_param_values,
+ global_options_set.x_param_values);
+ maybe_set_param_value (PARAM_SIMULTANEOUS_PREFETCHES, 6,
+ global_options.x_param_values,
+ global_options_set.x_param_values);
+
+ /* This cannot reside in s390_option_optimization_table since HAVE_prefetch
+ requires the arch flags to be evaluated already. Since prefetching
+ is beneficial on s390, we enable it if available. */
+ if (flag_prefetch_loop_arrays < 0 && HAVE_prefetch && optimize >= 3)
+ flag_prefetch_loop_arrays = 1;
+
+ /* Use the alternative scheduling-pressure algorithm by default. */
+ maybe_set_param_value (PARAM_SCHED_PRESSURE_ALGORITHM, 2,
+ global_options.x_param_values,
+ global_options_set.x_param_values);
+
+ if (TARGET_TPF)
+ {
+ /* Don't emit DWARF3/4 unless specifically selected. The TPF
+ debuggers do not yet support DWARF 3/4. */
+ if (!global_options_set.x_dwarf_strict)
+ dwarf_strict = 1;
+ if (!global_options_set.x_dwarf_version)
+ dwarf_version = 2;
+ }
+
+ /* Register a target-specific optimization-and-lowering pass
+ to run immediately before prologue and epilogue generation.
+
+ Registering the pass must be done at start up. It's
+ convenient to do it here. */
+ opt_pass *new_pass = new pass_s390_early_mach (g);
+ struct register_pass_info insert_pass_s390_early_mach =
+ {
+ new_pass, /* pass */
+ "pro_and_epilogue", /* reference_pass_name */
+ 1, /* ref_pass_instance_number */
+ PASS_POS_INSERT_BEFORE /* po_op */
+ };
+ register_pass (&insert_pass_s390_early_mach);
+}
+
/* Initialize GCC target structure. */
#undef TARGET_ASM_ALIGNED_HI_OP
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