From: Ulrich Weigand <uweigand@de.ibm.com>
Date: Wed, 28 Apr 2004 14:34:51 +0000 (+0000)
Subject: gcse.c (find_moveable_store): Do not accept store insns with REG_EH_REGION note.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=c2e2375e23164e8ae590c4b68d11fb767cf214b8;p=gcc.git

gcse.c (find_moveable_store): Do not accept store insns with REG_EH_REGION note.

	* gcse.c (find_moveable_store): Do not accept store insns with
	REG_EH_REGION note.

From-SVN: r81249
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index f4c52736d93..e75088583ce 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2004-04-28  Ulrich Weigand  <uweigand@de.ibm.com>
+
+	* gcse.c (find_moveable_store): Do not accept store insns with 
+	REG_EH_REGION note.
+
 2004-04-28  Paul Brook  <paul@codesourcery.com>
 
 	* calls.c (precompute_arguments): Remove PROMOTE_FOR_CALL_ONLY.
diff --git a/gcc/gcse.c b/gcc/gcse.c
index 88f94f6802e..7442faab520 100644
--- a/gcc/gcse.c
+++ b/gcc/gcse.c
@@ -7175,6 +7175,11 @@ find_moveable_store (rtx insn, int *regs_set_before, int *regs_set_after)
   if (flag_non_call_exceptions && may_trap_p (dest))
     return;
 
+  /* Even if the destination cannot trap, the source may.  In this case we'd
+     need to handle updating the REG_EH_REGION note.  */
+  if (find_reg_note (insn, REG_EH_REGION, NULL_RTX))
+    return;
+
   ptr = ldst_entry (dest);
   if (!ptr->pattern_regs)
     ptr->pattern_regs = extract_mentioned_regs (dest);