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Rename forwarder_block_p in treading code to empty_block_with_phis_p. 

gcc/ChangeLog:

	* tree-ssa-threadedge.c (forwarder_block_p): Rename to...
	(empty_block_with_phis_p): ...this.
	(potentially_threadable_block): Same.
	(jump_threader::thread_through_normal_block): Same.
This commit is contained in:
Aldy Hernandez 2021-09-07 15:20:23 +02:00
parent fc4f0631de
commit 020e2db0a8
1 changed files with 4 additions and 5 deletions
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9
gcc/tree-ssa-threadedge.c
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@ -101,11 +101,10 @@ has_phis_p (basic_block bb)
return !gsi_end_p (gsi_start_phis (bb));
}
/* Return TRUE for a forwarder block which is defined as having PHIs
but no instructions. */
/* Return TRUE for a block with PHIs but no statements. */
static bool
forwarder_block_p (basic_block bb)
empty_block_with_phis_p (basic_block bb)
{
return gsi_end_p (gsi_start_nondebug_bb (bb)) && has_phis_p (bb);
}
@ -123,7 +122,7 @@ potentially_threadable_block (basic_block bb)
to the loop header. We want to thread through them as we can
sometimes thread to the loop exit, which is obviously profitable.
The interesting case here is when the block has PHIs. */
if (forwarder_block_p (bb))
if (empty_block_with_phis_p (bb))
return true;
/* If BB has a single successor or a single predecessor, then
@ -1008,7 +1007,7 @@ jump_threader::thread_through_normal_block (vec<jump_thread_edge *> *path,
{
/* First case. The statement simply doesn't have any instructions, but
does have PHIs. */
if (forwarder_block_p (e->dest))
if (empty_block_with_phis_p (e->dest))
return 0;
/* Second case. */