}
}
-/* Called via walk_stores. DATA points to a hash table we can use to
- establish a unique SYMBOL_REF for each counter, which corresponds to
- a caller-callee pair.
- X is a store which we want to examine for an UNSPEC_PROF, which
- would be an address loaded into a register, or directly used in a MEM.
- If we found an UNSPEC_PROF, if we encounter a new counter the first time,
- write out a description and a data allocation for a 32 bit counter.
- Also, fill in the appropriate symbol_ref into each UNSPEC_PROF instance. */
-
-static void
-write_profile_sections (rtx dest ATTRIBUTE_UNUSED, rtx x, void *data)
-{
- rtx *srcp, src;
- htab_t htab = (htab_t) data;
- rtx *slot;
-
- if (GET_CODE (x) != SET)
- return;
- srcp = &SET_SRC (x);
- if (MEM_P (*srcp))
- srcp = &XEXP (*srcp, 0);
- else if (MEM_P (SET_DEST (x)))
- srcp = &XEXP (SET_DEST (x), 0);
- src = *srcp;
- if (GET_CODE (src) != CONST)
- return;
- src = XEXP (src, 0);
- if (GET_CODE (src) != UNSPEC || XINT (src, 1) != UNSPEC_PROF)
- return;
-
- gcc_assert (XVECLEN (src, 0) == 3);
- if (!htab_elements (htab))
- {
- output_asm_insn (".section .__arc_profile_desc, \"a\"\n"
- "\t.long %0 + 1\n",
- &XVECEXP (src, 0, 0));
- }
- slot = (rtx *) htab_find_slot (htab, src, INSERT);
- if (*slot == HTAB_EMPTY_ENTRY)
- {
- static int count_nr;
- char buf[24];
- rtx count;
-
- *slot = src;
- sprintf (buf, "__prof_count%d", count_nr++);
- count = gen_rtx_SYMBOL_REF (Pmode, xstrdup (buf));
- XVECEXP (src, 0, 2) = count;
- output_asm_insn (".section\t.__arc_profile_desc, \"a\"\n"
- "\t.long\t%1\n"
- "\t.section\t.__arc_profile_counters, \"aw\"\n"
- "\t.type\t%o2, @object\n"
- "\t.size\t%o2, 4\n"
- "%o2:\t.zero 4",
- &XVECEXP (src, 0, 0));
- *srcp = count;
- }
- else
- *srcp = XVECEXP (*slot, 0, 2);
-}
-
-/* Hash function for UNSPEC_PROF htab. Use both the caller's name and
- the callee's name (if known). */
-
-static hashval_t
-unspec_prof_hash (const void *x)
-{
- const_rtx u = (const_rtx) x;
- const_rtx s1 = XVECEXP (u, 0, 1);
-
- return (htab_hash_string (XSTR (XVECEXP (u, 0, 0), 0))
- ^ (s1->code == SYMBOL_REF ? htab_hash_string (XSTR (s1, 0)) : 0));
-}
-
-/* Equality function for UNSPEC_PROF htab. Two pieces of UNSPEC_PROF rtl
- shall refer to the same counter if both caller name and callee rtl
- are identical. */
-
-static int
-unspec_prof_htab_eq (const void *x, const void *y)
-{
- const_rtx u0 = (const_rtx) x;
- const_rtx u1 = (const_rtx) y;
- const_rtx s01 = XVECEXP (u0, 0, 1);
- const_rtx s11 = XVECEXP (u1, 0, 1);
-
- return (!strcmp (XSTR (XVECEXP (u0, 0, 0), 0),
- XSTR (XVECEXP (u1, 0, 0), 0))
- && rtx_equal_p (s01, s11));
-}
-
/* Conditional execution support.
This is based on the ARM port but for now is much simpler.
case UNSPEC_TLS_GD:
case UNSPEC_TLS_IE:
case UNSPEC_TLS_OFF:
- case UNSPEC_PROF:
return true;
default:
}
-/* Emit profiling code for calling CALLEE. Return true if a special
- call pattern needs to be generated. */
-
-bool
-arc_profile_call (rtx callee)
-{
- rtx from = XEXP (DECL_RTL (current_function_decl), 0);
-
- if (TARGET_UCB_MCOUNT)
- /* Profiling is done by instrumenting the callee. */
- return false;
-
- if (CONSTANT_P (callee))
- {
- rtx count_ptr
- = gen_rtx_CONST (Pmode,
- gen_rtx_UNSPEC (Pmode,
- gen_rtvec (3, from, callee,
- CONST0_RTX (Pmode)),
- UNSPEC_PROF));
- rtx counter = gen_rtx_MEM (SImode, count_ptr);
- /* ??? The increment would better be done atomically, but as there is
- no proper hardware support, that would be too expensive. */
- emit_move_insn (counter,
- force_reg (SImode, plus_constant (SImode, counter, 1)));
- return false;
- }
- else
- {
- rtx count_list_ptr
- = gen_rtx_CONST (Pmode,
- gen_rtx_UNSPEC (Pmode,
- gen_rtvec (3, from, CONST0_RTX (Pmode),
- CONST0_RTX (Pmode)),
- UNSPEC_PROF));
- emit_move_insn (gen_rtx_REG (Pmode, 8), count_list_ptr);
- emit_move_insn (gen_rtx_REG (Pmode, 9), callee);
- return true;
- }
-}
-
/* Worker function for TARGET_RETURN_IN_MEMORY. */
static bool
cfun->machine->arc_reorg_started = 1;
arc_reorg_in_progress = 1;
- /* Emit special sections for profiling. */
- if (crtl->profile)
- {
- section *save_text_section;
- rtx_insn *insn;
- int size = get_max_uid () >> 4;
- htab_t htab = htab_create (size, unspec_prof_hash, unspec_prof_htab_eq,
- NULL);
-
- save_text_section = in_section;
- for (insn = get_insns (); insn; insn = NEXT_INSN (insn))
- if (NONJUMP_INSN_P (insn))
- walk_stores (PATTERN (insn), write_profile_sections, htab);
- if (htab_elements (htab))
- in_section = 0;
- switch_to_section (save_text_section);
- htab_delete (htab);
- }
-
/* Link up loop ends with their loop start. */
{
for (insn = get_insns (); insn; insn = NEXT_INSN (insn))
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