2014-06-19 Tom de Vries <tom@codesourcery.com>
* final.c (collect_fn_hard_reg_usage): Add and use variable
function_used_regs.
@@ -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;
}
--
1.9.1