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From: Jeff Law <law@gcc.gnu.org>
To: gcc-cvs@gcc.gnu.org
Subject: [gcc r12-1485] Minor improvement to compare elimination
Date: Tue, 15 Jun 2021 16:43:52 +0000 (GMT)	[thread overview]
Message-ID: <20210615164352.7BC2E38515EE@sourceware.org> (raw)

https://gcc.gnu.org/g:6d43ec50966cafb339eb6a370a5d767a24f673e1

commit r12-1485-g6d43ec50966cafb339eb6a370a5d767a24f673e1
Author: Jeff Law <jeffreyalaw@gmail.com>
Date:   Tue Jun 15 12:42:42 2021 -0400

    Minor improvement to compare elimination
    
    gcc/
            * compare-elim.c (try_eliminate_compare): Run DCE to clean things
            up before eliminating comparisons.

Diff:
---
 gcc/compare-elim.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gcc/compare-elim.c b/gcc/compare-elim.c
index 85085cd6973..607eadc3d96 100644
--- a/gcc/compare-elim.c
+++ b/gcc/compare-elim.c
@@ -906,6 +906,7 @@ try_eliminate_compare (struct comparison *cmp)
 static unsigned int
 execute_compare_elim_after_reload (void)
 {
+  df_set_flags (DF_LR_RUN_DCE);
   df_analyze ();
 
   gcc_checking_assert (!all_compares.exists ());


                 reply	other threads:[~2021-06-15 16:43 UTC|newest]

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