From f90130752f21c4cfc1720bc875b8a23ea95afec6 Mon Sep 17 00:00:00 2001
From: David Edelsohn <edelsohn@gnu.org>
Date: Mon, 4 Apr 2005 22:50:53 +0000
Subject: [PATCH] tree-eh.c (tree_could_trap_p): Allow non-constant floating
point trapping divide.
2005-04-02 David Edelsohn <edelsohn@gnu.org>
Daniel Jacobowitz <dan@codesourcery.com>
* tree-eh.c (tree_could_trap_p): Allow non-constant floating point
trapping divide.
* rtlanal.c (may_trap_p): Same.
Co-Authored-By: Daniel Jacobowitz <dan@codesourcery.com>
From-SVN: r97582
---
gcc/ChangeLog | 7 +++++++
gcc/rtlanal.c | 8 +++-----
gcc/tree-eh.c | 4 ++--
3 files changed, 12 insertions(+), 7 deletions(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2a114c59d380..36608c762564 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2005-04-04 David Edelsohn <edelsohn@gnu.org>
+ Daniel Jacobowitz <dan@codesourcery.com>
+
+ * tree-eh.c (tree_could_trap_p): Allow non-constant floating point
+ trapping divide.
+ * rtlanal.c (may_trap_p): Same.
+
2005-04-04 Dale Johannesen <dalej@apple.com>
* ChangeLog: remove reference to ChangeLog.12.
diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c
index 0686af8c65bc..da9774e488be 100644
--- a/gcc/rtlanal.c
+++ b/gcc/rtlanal.c
@@ -2105,11 +2105,9 @@ may_trap_p (rtx x)
case UMOD:
if (HONOR_SNANS (GET_MODE (x)))
return 1;
- if (! CONSTANT_P (XEXP (x, 1))
- || (GET_MODE_CLASS (GET_MODE (x)) == MODE_FLOAT
- && flag_trapping_math))
- return 1;
- if (XEXP (x, 1) == const0_rtx)
+ if (GET_MODE_CLASS (GET_MODE (x)) == MODE_FLOAT)
+ return flag_trapping_math;
+ if (!CONSTANT_P (XEXP (x, 1)) || (XEXP (x, 1) == const0_rtx))
return 1;
break;
diff --git a/gcc/tree-eh.c b/gcc/tree-eh.c
index ab945ff97017..3dbcfa87ef9a 100644
--- a/gcc/tree-eh.c
+++ b/gcc/tree-eh.c
@@ -1787,8 +1787,8 @@ tree_could_trap_p (tree expr)
case RDIV_EXPR:
if (honor_snans || honor_trapv)
return true;
- if (fp_operation && flag_trapping_math)
- return true;
+ if (fp_operation)
+ return flag_trapping_math;
t = TREE_OPERAND (expr, 1);
if (!TREE_CONSTANT (t) || integer_zerop (t))
return true;
--
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