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Eliminate the checked cast from get_call_reg_set_usage

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gcc/ChangeLog
2014-09-05  David Malcolm  <dmalcolm@redhat.com>

	* caller-save.c (setup_save_areas): Strengthen local "insn" from
	rtx to rtx_insn *.
	* final.c (get_call_reg_set_usage): Likewise for first param,
	eliminating a checked cast.
	* regs.h (get_call_reg_set_usage): Likewise for first param.
	* resource.c (mark_set_resources): Introduce local rtx_call_insn *
	"call_insn" for the case of a MARK_SRC_DEST_CALL via a checked
	cast, replacing references to "x" with "call_insn" where
	appropriate.
	(mark_target_live_regs): Strengthen local "real_insn" from rtx to
	rtx_insn *, adding a checked cast.

From-SVN: r214962
This commit is contained in:
David Malcolm 2014-09-05 14:13:28 +00:00 • committed by David Malcolm
parent 7fa55ff675
commit 86bf2d46b6
5 changed files with 23 additions and 9 deletions
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14
gcc/ChangeLog
View file

@ -1,3 +1,17 @@
2014-09-05 David Malcolm <dmalcolm@redhat.com>
* caller-save.c (setup_save_areas): Strengthen local "insn" from
rtx to rtx_insn *.
* final.c (get_call_reg_set_usage): Likewise for first param,
eliminating a checked cast.
* regs.h (get_call_reg_set_usage): Likewise for first param.
* resource.c (mark_set_resources): Introduce local rtx_call_insn *
"call_insn" for the case of a MARK_SRC_DEST_CALL via a checked
cast, replacing references to "x" with "call_insn" where
appropriate.
(mark_target_live_regs): Strengthen local "real_insn" from rtx to
rtx_insn *, adding a checked cast.
2014-09-05 David Malcolm <dmalcolm@redhat.com>
* output.h (final_scan_insn): Strengthen first param from rtx to

2
gcc/caller-save.c
View file

@ -418,7 +418,7 @@ setup_save_areas (void)
int i, j, k, freq;
HARD_REG_SET hard_regs_used;
struct saved_hard_reg *saved_reg;
rtx insn;
rtx_insn *insn;
struct insn_chain *chain, *next;
unsigned int regno;
HARD_REG_SET hard_regs_to_save, used_regs, this_insn_sets;

3
gcc/final.c
View file

@ -4879,10 +4879,9 @@ get_call_cgraph_rtl_info (rtx_insn *insn)
in REG_SET. Return DEFAULT_SET in REG_SET if not found. */
bool
get_call_reg_set_usage (rtx uncast_insn, HARD_REG_SET *reg_set,
get_call_reg_set_usage (rtx_insn *insn, HARD_REG_SET *reg_set,
HARD_REG_SET default_set)
{
rtx_insn *insn = safe_as_a <rtx_insn *> (uncast_insn);
if (flag_use_caller_save)
{
struct cgraph_rtl_info *node = get_call_cgraph_rtl_info (insn);

2
gcc/regs.h
View file

@ -412,7 +412,7 @@ range_in_hard_reg_set_p (const HARD_REG_SET set, unsigned regno, int nregs)
}
/* Get registers used by given function call instruction. */
extern bool get_call_reg_set_usage (rtx insn, HARD_REG_SET *reg_set,
extern bool get_call_reg_set_usage (rtx_insn *insn, HARD_REG_SET *reg_set,
HARD_REG_SET default_set);
#endif /* GCC_REGS_H */

11
gcc/resource.c
View file

@ -659,15 +659,16 @@ mark_set_resources (rtx x, struct resources *res, int in_dest,
if (mark_type == MARK_SRC_DEST_CALL)
{
rtx_call_insn *call_insn = as_a <rtx_call_insn *> (x);
rtx link;
HARD_REG_SET regs;
res->cc = res->memory = 1;
get_call_reg_set_usage (x, &regs, regs_invalidated_by_call);
get_call_reg_set_usage (call_insn, &regs, regs_invalidated_by_call);
IOR_HARD_REG_SET (res->regs, regs);
for (link = CALL_INSN_FUNCTION_USAGE (x);
for (link = CALL_INSN_FUNCTION_USAGE (call_insn);
link; link = XEXP (link, 1))
if (GET_CODE (XEXP (link, 0)) == CLOBBER)
mark_set_resources (SET_DEST (XEXP (link, 0)), res, 1,
@ -675,7 +676,7 @@ mark_set_resources (rtx x, struct resources *res, int in_dest,
/* Check for a REG_SETJMP. If it exists, then we must
assume that this call can clobber any register. */
if (find_reg_note (x, REG_SETJMP, NULL))
if (find_reg_note (call_insn, REG_SETJMP, NULL))
SET_HARD_REG_SET (res->regs);
}
@ -995,7 +996,7 @@ mark_target_live_regs (rtx_insn *insns, rtx target_maybe_return, struct resource
insn = next_insn_no_annul (insn))
{
rtx link;
rtx real_insn = insn;
rtx_insn *real_insn = insn;
enum rtx_code code = GET_CODE (insn);
if (DEBUG_INSN_P (insn))
@ -1013,7 +1014,7 @@ mark_target_live_regs (rtx_insn *insns, rtx target_maybe_return, struct resource
if (code == INSN
&& GET_CODE (PATTERN (insn)) == USE
&& INSN_P (XEXP (PATTERN (insn), 0)))
real_insn = XEXP (PATTERN (insn), 0);
real_insn = as_a <rtx_insn *> (XEXP (PATTERN (insn), 0));
if (CALL_P (real_insn))
{