unsigned char reg[REG_STACK_SIZE];/* register - stack mapping */
} *stack;
-/* This is used to carry information about basic blocks. It is
+/* This is used to carry information about basic blocks. It is
attached to the AUX field of the standard CFG block. */
typedef struct block_info_def
};
/* We use this array to cache info about insns, because otherwise we
- spend too much time in stack_regs_mentioned_p.
+ spend too much time in stack_regs_mentioned_p.
Indexed by insn UIDs. A value of zero is uninitialized, one indicates
the insn uses stack registers, two indicates the insn does not use
next_flags_user (insn)
rtx insn;
{
- /* Search forward looking for the first use of this value.
+ /* Search forward looking for the first use of this value.
Stop at block boundaries. */
while (insn != current_block->end)
insn = NEXT_INSN (insn);
if (INSN_P (insn) && reg_mentioned_p (ix86_flags_rtx, PATTERN (insn)))
- return insn;
+ return insn;
if (GET_CODE (insn) == CALL_INSN)
return NULL_RTX;
for (top = temp_stack.top = regstack->top; top >= 0; top--)
temp_stack.reg[top] = FIRST_STACK_REG + temp_stack.top - top;
-
+
change_stack (insn, regstack, &temp_stack, EMIT_AFTER);
}
if (i > LAST_STACK_REG)
return;
- /* Ok, floating point instructions exist. If not optimizing,
+ /* Ok, floating point instructions exist. If not optimizing,
build the CFG and run life analysis. */
if (!optimize)
{
ix86_flags_rtx = gen_rtx_REG (CCmode, FLAGS_REG);
- /* A QNaN for initializing uninitialized variables.
+ /* A QNaN for initializing uninitialized variables.
??? We can't load from constant memory in PIC mode, because
we're insertting these instructions before the prologue and
error_for_asm (insn, "output constraint %d must specify a single register", i);
malformed_asm = 1;
}
- else
+ else
{
int j;
{
#ifdef FUNCTION_OUTGOING_VALUE
result
- = FUNCTION_OUTGOING_VALUE (TREE_TYPE (DECL_RESULT (decl)), decl);
+ = FUNCTION_OUTGOING_VALUE (TREE_TYPE (DECL_RESULT (decl)), decl);
#else
result = FUNCTION_VALUE (TREE_TYPE (DECL_RESULT (decl)), decl);
#endif
pop_insn = NULL_RTX;
if (get_hard_regnum (regstack, reg1) >= 0)
- pop_insn = emit_pop_insn (insn, regstack, reg1, where);
+ pop_insn = emit_pop_insn (insn, regstack, reg1, where);
if (get_hard_regnum (regstack, reg2) >= 0)
- pop_insn = emit_pop_insn (insn, regstack, reg2, where);
+ pop_insn = emit_pop_insn (insn, regstack, reg2, where);
if (!pop_insn)
abort ();
return pop_insn;
{
rtx dest = SET_DEST (pat);
- /* Search forward looking for the first use of this value.
+ /* Search forward looking for the first use of this value.
Stop at block boundaries. */
while (insn != current_block->end)
{
/* Deaths in USE insns can happen in non optimizing compilation.
Handle them by popping the dying register. */
src = get_true_reg (&XEXP (pat, 0));
- if (STACK_REG_P (*src)
- && find_regno_note (insn, REG_DEAD, REGNO (*src)))
- {
- emit_pop_insn (insn, regstack, *src, EMIT_AFTER);
- return;
- }
+ if (STACK_REG_P (*src)
+ && find_regno_note (insn, REG_DEAD, REGNO (*src)))
+ {
+ emit_pop_insn (insn, regstack, *src, EMIT_AFTER);
+ return;
+ }
/* ??? Uninitialized USE should not happen. */
else if (get_hard_regnum (regstack, *src) == -1)
abort ();
/* The fix_truncdi_1 pattern wants to be able to allocate
it's own scratch register. It does this by clobbering
an fp reg so that it is assured of an empty reg-stack
- register. If the register is live, kill it now.
+ register. If the register is live, kill it now.
Remove the DEAD/UNUSED note so we don't try to kill it
later too. */
{
/* A top-level clobber with no REG_DEAD, and no hard-regnum
indicates an uninitialized value. Because reload removed
- all other clobbers, this must be due to a function
+ all other clobbers, this must be due to a function
returning without a value. Load up a NaN. */
if (! note
reversed_comparison_code (XEXP (pat_src, 0), insn));
}
else
- emit_swap_insn (insn, regstack, *dest);
+ emit_swap_insn (insn, regstack, *dest);
}
{
/* Make dest the top of stack. Add dest to regstack if
not present. */
if (get_hard_regnum (regstack, *dest) < FIRST_STACK_REG)
- regstack->reg[++regstack->top] = REGNO (*dest);
+ regstack->reg[++regstack->top] = REGNO (*dest);
SET_HARD_REG_BIT (regstack->reg_set, REGNO (*dest));
replace_reg (dest, FIRST_STACK_REG);
break;
n_inputs = get_asm_operand_n_inputs (body);
n_outputs = recog_data.n_operands - n_inputs;
-
+
if (alt < 0)
abort ();
abort ();
/* If the stack is not empty (new->top != -1), loop here emitting
- swaps until the stack is correct.
+ swaps until the stack is correct.
The worst case number of swaps emitted is N + 2, where N is the
depth of the stack. In some cases, the reg at the top of
}
\f
/* This function was doing life analysis. We now let the regular live
- code do it's job, so we only need to check some extra invariants
+ code do it's job, so we only need to check some extra invariants
that reg-stack expects. Primary among these being that all registers
are initialized before use.
basic_block block = BASIC_BLOCK (i);
block_info bi = BLOCK_INFO (block);
int reg;
-
+
/* Set current register status at last instruction `uninitialized'. */
bi->stack_in.top = -2;
-
+
/* Copy live_at_end and live_at_start into temporaries. */
for (reg = FIRST_STACK_REG; reg <= LAST_STACK_REG; reg++)
{
}
}
- /* Load something into each stack register live at function entry.
+ /* Load something into each stack register live at function entry.
Such live registers can be caused by uninitialized variables or
- functions not returning values on all paths. In order to keep
+ functions not returning values on all paths. In order to keep
the push/pop code happy, and to not scrog the register stack, we
- must put something in these registers. Use a QNaN.
+ must put something in these registers. Use a QNaN.
Note that we are insertting converted code here. This code is
never seen by the convert_regs pass. */
tmpstack = regstack;
change_stack (block->end, &tmpstack, target_stack, EMIT_AFTER);
- return false;
+ return false;
}
if (file)
current_block = NULL;
start_sequence ();
- /* ??? change_stack needs some point to emit insns after.
- Also needed to keep gen_sequence from returning a
+ /* ??? change_stack needs some point to emit insns after.
+ Also needed to keep gen_sequence from returning a
pattern as opposed to a sequence, which would lose
REG_DEAD notes. */
after = emit_note (NULL, NOTE_INSN_DELETED);
inserted |= compensate_edge (beste, file);
else
beste = NULL;
-
+
current_block = block;
if (file)
if (!BLOCK_INFO (e->dest)->done
&& e->dest != block)
abort ();
- inserted |= compensate_edge (e, file);
+ inserted |= compensate_edge (e, file);
}
}
for (e = block->pred; e ; e = e->pred_next)
{
if (!BLOCK_INFO (e->src)->done)
abort ();
- inserted |= compensate_edge (e, file);
+ inserted |= compensate_edge (e, file);
}
}
/* Process all blocks reachable from all entry points. */
for (e = ENTRY_BLOCK_PTR->succ; e ; e = e->succ_next)
inserted |= convert_regs_2 (file, e->dest);
-
- /* ??? Process all unreachable blocks. Though there's no excuse
+
+ /* ??? Process all unreachable blocks. Though there's no excuse
for keeping these even when not optimizing. */
for (i = 0; i < n_basic_blocks; ++i)
{
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