From: Alexander Monakov <amonakov@ispras.ru>
Date: Wed, 11 Apr 2018 14:36:04 +0000 (+0300)
Subject: sched-deps: respect deps->readonly in macro-fusion (PR 84566)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=c391bd50824e79a4639490952e08f5f98fb0029a;p=gcc.git

sched-deps: respect deps->readonly in macro-fusion (PR 84566)

	PR rtl-optimization/84566
	* sched-deps.c (sched_analyze_insn): Check deps->readonly when invoking
	sched_macro_fuse_insns.

From-SVN: r259322
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index b24df796b6a..39230d7dd55 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2018-04-11  Alexander Monakov  <amonakov@ispras.ru>
+
+	PR rtl-optimization/84566
+	* sched-deps.c (sched_analyze_insn): Check deps->readonly when invoking
+	sched_macro_fuse_insns.
+
 2018-04-11  Alexander Monakov  <amonakov@ispras.ru>
 
 	PR target/84301
diff --git a/gcc/sched-deps.c b/gcc/sched-deps.c
index 9a5cbebea40..120b5f0ddc1 100644
--- a/gcc/sched-deps.c
+++ b/gcc/sched-deps.c
@@ -2897,7 +2897,8 @@ sched_analyze_insn (struct deps_desc *deps, rtx x, rtx_insn *insn)
 			 && code == SET);
 
   /* Group compare and branch insns for macro-fusion.  */
-  if (targetm.sched.macro_fusion_p
+  if (!deps->readonly
+      && targetm.sched.macro_fusion_p
       && targetm.sched.macro_fusion_p ())
     sched_macro_fuse_insns (insn);