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re PR middle-end/38584 (Inline heuristics run even at -O0) 

PR middle-end/38584
	* ipa-inline.c (compute_inline_parameters): When not optimizing,
	don't compute the inline parameters, just set them to 0 instead.

From-SVN: r142963
This commit is contained in:
Steven Bosscher 2008-12-30 13:35:00 +00:00
parent 0251119434
commit 0000209073
2 changed files with 22 additions and 4 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2008-12-30 Steven Bosscher <steven@gcc.gnu.org>
PR middle-end/38584
* ipa-inline.c (compute_inline_parameters): When not optimizing,
don't compute the inline parameters, just set them to 0 instead.
2008-12-30 Paolo Bonzini <bonzini@gnu.org>
PR tree-optimization/38572

20
gcc/ipa-inline.c
View File

@ -1592,18 +1592,30 @@ struct simple_ipa_opt_pass pass_ipa_early_inline =
unsigned int
compute_inline_parameters (struct cgraph_node *node)
{
HOST_WIDE_INT self_stack_size;
gcc_assert (!node->global.inlined_to);
inline_summary (node)->estimated_self_stack_size
= estimated_stack_frame_size ();
node->global.estimated_stack_size
= inline_summary (node)->estimated_self_stack_size;
/* Estimate the stack size for the function. But not at -O0
because estimated_stack_frame_size is a quadratic problem. */
self_stack_size = optimize ? estimated_stack_frame_size () : 0;
inline_summary (node)->estimated_self_stack_size = self_stack_size;
node->global.estimated_stack_size = self_stack_size;
node->global.stack_frame_offset = 0;
/* Can this function be inlined at all? */
node->local.inlinable = tree_inlinable_function_p (current_function_decl);
/* Estimate the number of instructions for this function.
??? At -O0 we don't use this information except for the dumps, and
even then only for always_inline functions. But disabling this
causes ICEs in the inline heuristics... */
inline_summary (node)->self_insns
= estimate_num_insns_fn (current_function_decl, &eni_inlining_weights);
if (node->local.inlinable && !node->local.disregard_inline_limits)
node->local.disregard_inline_limits
= DECL_DISREGARD_INLINE_LIMITS (current_function_decl);
/* Inlining characteristics are maintained by the cgraph_mark_inline. */
node->global.insns = inline_summary (node)->self_insns;
return 0;