From 3dd8069d498c0cef2040ea3ce54b793280dfb1a6 Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <bonzini@gnu.org>
Date: Tue, 15 Jun 2004 10:27:30 +0000
Subject: [PATCH] fold-const.c (operand_equal_p): Update comment.
2004-06-15 Paolo Bonzini <bonzini@gnu.org>
* fold-const.c (operand_equal_p): Update comment.
From-SVN: r83173
---
gcc/ChangeLog | 4 ++++
gcc/fold-const.c | 8 ++++----
2 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e60382599868..d2c7c64e2542 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2004-06-15 Paolo Bonzini <bonzini@gnu.org>
+
+ * fold-const.c (operand_equal_p): Update comment.
+
2004-06-15 Kazuhiro Inaoka <inaoka.kazuhiro@renesas.com>
* config/m32r/m32r.h (RETURN_ADDR_RTX): Define.
diff --git a/gcc/fold-const.c b/gcc/fold-const.c
index 1cc2b8189c88..3c5a81d7253d 100644
--- a/gcc/fold-const.c
+++ b/gcc/fold-const.c
@@ -2337,10 +2337,10 @@ truth_value_p (enum tree_code code)
executed between the evaluation of its "operands" (which may often
be evaluated in arbitrary order). Hence if the operands themselves
don't side-effect, the VAR_DECLs, PARM_DECLs etc... must hold the
- same value in each operand/subexpression. Hence a zero value for
- ONLY_CONST assumes isochronic (or instantaneous) tree equivalence.
- If comparing arbitrary expression trees, such as from different
- statements, ONLY_CONST must usually be nonzero.
+ same value in each operand/subexpression. Hence leaving OEP_ONLY_CONST
+ unset means assuming isochronic (or instantaneous) tree equivalence.
+ Unless comparing arbitrary expression trees, such as from different
+ statements, this flag can usually be left unset.
If OEP_PURE_SAME is set, then pure functions with identical arguments
are considered the same. It is used when the caller has other ways
--
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