From: Eric Botcazou <ebotcazou@adacore.com>
Date: Wed, 14 Jun 2017 10:40:34 +0000 (+0000)
Subject: simplify-rtx.c (simplify_binary_operation_1): Do not simplify a division of 0 if... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=934861488090cd5fa80845d9b07c6497e5d7621a;p=gcc.git

simplify-rtx.c (simplify_binary_operation_1): Do not simplify a division of 0 if non-call exceptions are enabled.

	* simplify-rtx.c (simplify_binary_operation_1) <UDIV>: Do not simplify
	a division of 0 if non-call exceptions are enabled.

From-SVN: r249188
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 8205b0e984a..c6e657259ec 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2017-06-14  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* simplify-rtx.c (simplify_binary_operation_1) <UDIV>: Do not simplify
+	a division of 0 if non-call exceptions are enabled.
+
 2017-06-14  Andrew Pinski  <apinski@cavium.com>
 	    Naveen H.S  <Naveen.Hurugalawadi@cavium.com>
 
diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c
index 7cab26a0e34..e8af7f34050 100644
--- a/gcc/simplify-rtx.c
+++ b/gcc/simplify-rtx.c
@@ -3194,7 +3194,8 @@ simplify_binary_operation_1 (enum rtx_code code, machine_mode mode,
 
     case UDIV:
       /* 0/x is 0 (or x&0 if x has side-effects).  */
-      if (trueop0 == CONST0_RTX (mode))
+      if (trueop0 == CONST0_RTX (mode)
+	  && !cfun->can_throw_non_call_exceptions)
 	{
 	  if (side_effects_p (op1))
 	    return simplify_gen_binary (AND, mode, op1, trueop0);