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authorKaveh Ghazi <ghazi@caip.rutgers.edu>2008-07-16 17:49:20 +0000
committerKaveh Ghazi <ghazi@caip.rutgers.edu>2008-07-16 17:49:20 +0000
commit13e3016e52379160693c17a3488537924cb3ca33 (patch)
treef4483861429c61796d6c351bc9c5766c15c43137 /gcc/reg-stack.c
parent7c31199ab3f972e583919a9bb1003073555b70b3 (diff)
* cfg.c (dump_reg_info): Avoid C++ keywords.
* dwarf2asm.c (dw2_force_const_mem, dw2_asm_output_encoded_addr_rtx): Likewise. * except.c (gen_eh_region, add_action_record, output_ttype): Likewise. * expmed.c (expand_shift): Likewise. * global.c (find_reg): Likewise. * graph.c (draw_edge): Likewise. * local-alloc.c (reg_meets_class_p, find_free_reg): Likewise. * optabs.c (expand_binop, expand_twoval_unop, expand_twoval_binop, widen_clz, widen_bswap, expand_parity, expand_unop, emit_cmp_and_jump_insn_1): Likewise. * postreload.c (reload_cse_simplify_operands): Likewise. * ra.h (add_neighbor): Likewise. * reg-stack.c (remove_regno_note, change_stack): Likewise. * regclass.c (memory_move_secondary_cost, dump_regclass, regclass, record_reg_classes, copy_cost, record_address_regs, invalid_mode_change_p): Likewise. * regrename.c (regrename_optimize, scan_rtx_reg, dump_def_use_chain, find_oldest_value_reg, replace_oldest_value_reg, copyprop_hardreg_forward_1): Likewise. git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@137893 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/reg-stack.c')
-rw-r--r--gcc/reg-stack.c76
1 files changed, 38 insertions, 38 deletions
diff --git a/gcc/reg-stack.c b/gcc/reg-stack.c
index 4b5e422e207..eb31bc835cf 100644
--- a/gcc/reg-stack.c
+++ b/gcc/reg-stack.c
@@ -713,18 +713,18 @@ replace_reg (rtx *reg, int regno)
static void
remove_regno_note (rtx insn, enum reg_note note, unsigned int regno)
{
- rtx *note_link, this;
+ rtx *note_link, this_rtx;
note_link = &REG_NOTES (insn);
- for (this = *note_link; this; this = XEXP (this, 1))
- if (REG_NOTE_KIND (this) == note
- && REG_P (XEXP (this, 0)) && REGNO (XEXP (this, 0)) == regno)
+ for (this_rtx = *note_link; this_rtx; this_rtx = XEXP (this_rtx, 1))
+ if (REG_NOTE_KIND (this_rtx) == note
+ && REG_P (XEXP (this_rtx, 0)) && REGNO (XEXP (this_rtx, 0)) == regno)
{
- *note_link = XEXP (this, 1);
+ *note_link = XEXP (this_rtx, 1);
return;
}
else
- note_link = &XEXP (this, 1);
+ note_link = &XEXP (this_rtx, 1);
gcc_unreachable ();
}
@@ -2355,7 +2355,7 @@ subst_stack_regs (rtx insn, stack regstack)
is no longer needed once this has executed. */
static void
-change_stack (rtx insn, stack old, stack new, enum emit_where where)
+change_stack (rtx insn, stack old, stack new_stack, enum emit_where where)
{
int reg;
int update_end = 0;
@@ -2368,9 +2368,9 @@ change_stack (rtx insn, stack old, stack new, enum emit_where where)
&& starting_stack_p
&& where == EMIT_BEFORE)
{
- BLOCK_INFO (current_block)->stack_in = *new;
+ BLOCK_INFO (current_block)->stack_in = *new_stack;
starting_stack_p = false;
- *old = *new;
+ *old = *new_stack;
return;
}
@@ -2386,7 +2386,7 @@ change_stack (rtx insn, stack old, stack new, enum emit_where where)
/* Initialize partially dead variables. */
for (i = FIRST_STACK_REG; i < LAST_STACK_REG + 1; i++)
- if (TEST_HARD_REG_BIT (new->reg_set, i)
+ if (TEST_HARD_REG_BIT (new_stack->reg_set, i)
&& !TEST_HARD_REG_BIT (old->reg_set, i))
{
old->reg[++old->top] = i;
@@ -2400,28 +2400,28 @@ change_stack (rtx insn, stack old, stack new, enum emit_where where)
/* If the destination block's stack already has a specified layout
and contains two or more registers, use a more intelligent algorithm
to pop registers that minimizes the number number of fxchs below. */
- if (new->top > 0)
+ if (new_stack->top > 0)
{
bool slots[REG_STACK_SIZE];
int pops[REG_STACK_SIZE];
int next, dest, topsrc;
/* First pass to determine the free slots. */
- for (reg = 0; reg <= new->top; reg++)
- slots[reg] = TEST_HARD_REG_BIT (new->reg_set, old->reg[reg]);
+ for (reg = 0; reg <= new_stack->top; reg++)
+ slots[reg] = TEST_HARD_REG_BIT (new_stack->reg_set, old->reg[reg]);
/* Second pass to allocate preferred slots. */
topsrc = -1;
- for (reg = old->top; reg > new->top; reg--)
- if (TEST_HARD_REG_BIT (new->reg_set, old->reg[reg]))
+ for (reg = old->top; reg > new_stack->top; reg--)
+ if (TEST_HARD_REG_BIT (new_stack->reg_set, old->reg[reg]))
{
dest = -1;
- for (next = 0; next <= new->top; next++)
- if (!slots[next] && new->reg[next] == old->reg[reg])
+ for (next = 0; next <= new_stack->top; next++)
+ if (!slots[next] && new_stack->reg[next] == old->reg[reg])
{
/* If this is a preference for the new top of stack, record
the fact by remembering it's old->reg in topsrc. */
- if (next == new->top)
+ if (next == new_stack->top)
topsrc = reg;
slots[next] = true;
dest = next;
@@ -2438,18 +2438,18 @@ change_stack (rtx insn, stack old, stack new, enum emit_where where)
slot is still unallocated, in which case we should place the
top of stack there. */
if (topsrc != -1)
- for (reg = 0; reg < new->top; reg++)
+ for (reg = 0; reg < new_stack->top; reg++)
if (!slots[reg])
{
pops[topsrc] = reg;
- slots[new->top] = false;
+ slots[new_stack->top] = false;
slots[reg] = true;
break;
}
/* Third pass allocates remaining slots and emits pop insns. */
- next = new->top;
- for (reg = old->top; reg > new->top; reg--)
+ next = new_stack->top;
+ for (reg = old->top; reg > new_stack->top; reg--)
{
dest = pops[reg];
if (dest == -1)
@@ -2472,14 +2472,14 @@ change_stack (rtx insn, stack old, stack new, enum emit_where where)
live = 0;
for (reg = 0; reg <= old->top; reg++)
- if (TEST_HARD_REG_BIT (new->reg_set, old->reg[reg]))
+ if (TEST_HARD_REG_BIT (new_stack->reg_set, old->reg[reg]))
live++;
next = live;
while (old->top >= live)
- if (TEST_HARD_REG_BIT (new->reg_set, old->reg[old->top]))
+ if (TEST_HARD_REG_BIT (new_stack->reg_set, old->reg[old->top]))
{
- while (TEST_HARD_REG_BIT (new->reg_set, old->reg[next]))
+ while (TEST_HARD_REG_BIT (new_stack->reg_set, old->reg[next]))
next--;
emit_pop_insn (insn, old, FP_MODE_REG (old->reg[next], DFmode),
EMIT_BEFORE);
@@ -2489,13 +2489,13 @@ change_stack (rtx insn, stack old, stack new, enum emit_where where)
EMIT_BEFORE);
}
- if (new->top == -2)
+ if (new_stack->top == -2)
{
/* If the new block has never been processed, then it can inherit
the old stack order. */
- new->top = old->top;
- memcpy (new->reg, old->reg, sizeof (new->reg));
+ new_stack->top = old->top;
+ memcpy (new_stack->reg, old->reg, sizeof (new_stack->reg));
}
else
{
@@ -2505,10 +2505,10 @@ change_stack (rtx insn, stack old, stack new, enum emit_where where)
/* By now, the only difference should be the order of the stack,
not their depth or liveliness. */
- gcc_assert (hard_reg_set_equal_p (old->reg_set, new->reg_set));
- gcc_assert (old->top == new->top);
+ gcc_assert (hard_reg_set_equal_p (old->reg_set, new_stack->reg_set));
+ gcc_assert (old->top == new_stack->top);
- /* If the stack is not empty (new->top != -1), loop here emitting
+ /* If the stack is not empty (new_stack->top != -1), loop here emitting
swaps until the stack is correct.
The worst case number of swaps emitted is N + 2, where N is the
@@ -2517,16 +2517,16 @@ change_stack (rtx insn, stack old, stack new, enum emit_where where)
other regs. But since we never swap any other reg away from
its correct slot, this algorithm will converge. */
- if (new->top != -1)
+ if (new_stack->top != -1)
do
{
/* Swap the reg at top of stack into the position it is
supposed to be in, until the correct top of stack appears. */
- while (old->reg[old->top] != new->reg[new->top])
+ while (old->reg[old->top] != new_stack->reg[new_stack->top])
{
- for (reg = new->top; reg >= 0; reg--)
- if (new->reg[reg] == old->reg[old->top])
+ for (reg = new_stack->top; reg >= 0; reg--)
+ if (new_stack->reg[reg] == old->reg[old->top])
break;
gcc_assert (reg != -1);
@@ -2539,8 +2539,8 @@ change_stack (rtx insn, stack old, stack new, enum emit_where where)
incorrect reg to the top of stack, and let the while loop
above fix it. */
- for (reg = new->top; reg >= 0; reg--)
- if (new->reg[reg] != old->reg[reg])
+ for (reg = new_stack->top; reg >= 0; reg--)
+ if (new_stack->reg[reg] != old->reg[reg])
{
emit_swap_insn (insn, old,
FP_MODE_REG (old->reg[reg], DFmode));
@@ -2551,7 +2551,7 @@ change_stack (rtx insn, stack old, stack new, enum emit_where where)
/* At this point there must be no differences. */
for (reg = old->top; reg >= 0; reg--)
- gcc_assert (old->reg[reg] == new->reg[reg]);
+ gcc_assert (old->reg[reg] == new_stack->reg[reg]);
}
if (update_end)