diff mbox series

[11,COMMITTED] Don't process lookups for debug statements in Ranger.

Message ID 92587687-46a1-6220-742f-2dda1ce09305@redhat.com
State New
Headers show
Series [11,COMMITTED] Don't process lookups for debug statements in Ranger. | expand

Commit Message

Andrew MacLeod July 14, 2021, 10:05 p.m. UTC 
Short cut version to disable processing of debug statements by ranger in 
GCC 11.

Although PR 100781 is not an issue in GCC11, its possible that a similar
situation may arise.  The identical fix cannot be easily introduced.
With EVRP always running in hybrid mode, there is no need for ranger to
spawn a lookup for a debug statement in this release.

bootstrapped with no regressions on x86_64-pc-linux-gnu.  pushed.

Andrew
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Patch

From 263a7e20c88a35bdfaebfac3c9abb313c5867590 Mon Sep 17 00:00:00 2001
From: Andrew MacLeod <amacleod@redhat.com>
Date: Tue, 8 Jun 2021 09:43:17 -0400
Subject: [PATCH 4/8] Don't process lookups for debug statements in Ranger.

Although PR 100781 is not an issue in GCC11, its possible that a similar
situation may arise.  The identical fix cannot be easily introduced.
With EVRP always running in hybrid mode, there is no need for ranger to
spawn a lookup for a debug statement in this release.

	* gimple-range.cc (gimple_ranger::range_of_expr): Treat debug statments
	as contextless queries to avoid additional lookups.
---
 gcc/gimple-range.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/gimple-range.cc b/gcc/gimple-range.cc
index 6158a754dd6..fd7fa5e3dbb 100644
--- a/gcc/gimple-range.cc
+++ b/gcc/gimple-range.cc
@@ -945,7 +945,7 @@  gimple_ranger::range_of_expr (irange &r, tree expr, gimple *stmt)
     return get_tree_range (r, expr);
 
   // If there is no statement, just get the global value.
-  if (!stmt)
+  if (!stmt || is_gimple_debug (stmt))
     {
       if (!m_cache.get_global_range (r, expr))
         r = gimple_range_global (expr);
-- 
2.17.2