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Use function_used_regs variable in collect_fn_hard_reg_usage

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2014-06-20  Tom de Vries  <tom@codesourcery.com>

	* final.c (collect_fn_hard_reg_usage): Add and use variable
	function_used_regs.

From-SVN: r211839
This commit is contained in:
Tom de Vries 2014-06-20 08:01:41 +00:00 committed by Tom de Vries
parent 569b1784fe
commit 53f2f6c1c4
2 changed files with 15 additions and 9 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2014-06-20 Tom de Vries <tom@codesourcery.com>
* final.c (collect_fn_hard_reg_usage): Add and use variable
function_used_regs.
2014-06-20 Jan Hubicka <hubicka@ucw.cz>
* cgraph.h (struct symtab_node): Add field in_init_priority_hash

19
gcc/final.c
View File

@ -4760,13 +4760,13 @@ collect_fn_hard_reg_usage (void)
int i;
#endif
struct cgraph_rtl_info *node;
HARD_REG_SET function_used_regs;
/* ??? To be removed when all the ports have been fixed. */
if (!targetm.call_fusage_contains_non_callee_clobbers)
return;
node = cgraph_rtl_info (current_function_decl);
gcc_assert (node != NULL);
CLEAR_HARD_REG_SET (function_used_regs);
for (insn = get_insns (); insn != NULL_RTX; insn = next_insn (insn))
{
@ -4779,25 +4779,26 @@ collect_fn_hard_reg_usage (void)
if (CALL_P (insn)
&& !get_call_reg_set_usage (insn, &insn_used_regs, call_used_reg_set))
{
CLEAR_HARD_REG_SET (node->function_used_regs);
return;
}
return;
IOR_HARD_REG_SET (node->function_used_regs, insn_used_regs);
IOR_HARD_REG_SET (function_used_regs, insn_used_regs);
}
/* Be conservative - mark fixed and global registers as used. */
IOR_HARD_REG_SET (node->function_used_regs, fixed_reg_set);
IOR_HARD_REG_SET (function_used_regs, fixed_reg_set);
#ifdef STACK_REGS
/* Handle STACK_REGS conservatively, since the df-framework does not
provide accurate information for them. */
for (i = FIRST_STACK_REG; i <= LAST_STACK_REG; i++)
SET_HARD_REG_BIT (node->function_used_regs, i);
SET_HARD_REG_BIT (function_used_regs, i);
#endif
node = cgraph_rtl_info (current_function_decl);
gcc_assert (node != NULL);
COPY_HARD_REG_SET (node->function_used_regs, function_used_regs);
node->function_used_regs_valid = 1;
}