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Remove dead code in switch conv pass.

Message ID 9eca05f6-f69b-74a2-fa2c-517c0fa5c5f3@suse.cz
State New
Headers show
Series Remove dead code in switch conv pass. | expand

Commit Message

Martin Liška Nov. 14, 2019, 12:03 p.m. UTC 
Hi.

The patch is a clean up of unused code.

Patch can bootstrap on x86_64-linux-gnu and survives regression tests.
I'm going to install the patch.

Thanks,
Martin

gcc/ChangeLog:

2019-11-14  Martin Liska  <mliska@suse.cz>

	* tree-switch-conversion.c (switch_conversion::switch_conversion):
	Do not initialize m_other_count.
	(switch_conversion::collect): Do not count m_default_count and
	m_other_count as we use frequencies for edges.
	* tree-switch-conversion.h: Remove m_default_count and m_other_count.
---
  gcc/tree-switch-conversion.c | 6 +-----
  gcc/tree-switch-conversion.h | 6 ------
  2 files changed, 1 insertion(+), 11 deletions(-)
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Patch

diff --git a/gcc/tree-switch-conversion.c b/gcc/tree-switch-conversion.c
index af4fd5e33bd..e741f56b520 100644
--- a/gcc/tree-switch-conversion.c
+++ b/gcc/tree-switch-conversion.c
@@ -61,7 +61,7 @@  using namespace tree_switch_conversion;
 
 /* Constructor.  */
 
-switch_conversion::switch_conversion (): m_final_bb (NULL), m_other_count (),
+switch_conversion::switch_conversion (): m_final_bb (NULL),
   m_constructors (NULL), m_default_values (NULL),
   m_arr_ref_first (NULL), m_arr_ref_last (NULL),
   m_reason (NULL), m_default_case_nonstandard (false), m_cfg_altered (false)
@@ -89,10 +89,6 @@  switch_conversion::collect (gswitch *swtch)
   e_default = gimple_switch_default_edge (cfun, swtch);
   m_default_bb = e_default->dest;
   m_default_prob = e_default->probability;
-  m_default_count = e_default->count ();
-  FOR_EACH_EDGE (e, ei, m_switch_bb->succs)
-    if (e != e_default)
-      m_other_count += e->count ();
 
   /* Get upper and lower bounds of case values, and the covered range.  */
   min_case = gimple_switch_label (swtch, 1);
diff --git a/gcc/tree-switch-conversion.h b/gcc/tree-switch-conversion.h
index c58bccea7f1..a0639fc5477 100644
--- a/gcc/tree-switch-conversion.h
+++ b/gcc/tree-switch-conversion.h
@@ -819,12 +819,6 @@  public:
   /* The probability of the default edge in the replaced switch.  */
   profile_probability m_default_prob;
 
-  /* The count of the default edge in the replaced switch.  */
-  profile_count m_default_count;
-
-  /* Combined count of all other (non-default) edges in the replaced switch.  */
-  profile_count m_other_count;
-
   /* Number of phi nodes in the final bb (that we'll be replacing).  */
   int m_phi_count;