From 176ae843e6fb30c60ee020accacb5e3cf95e3c77 Mon Sep 17 00:00:00 2001
From: Richard Biener <rguenther@suse.de>
Date: Wed, 10 Oct 2012 08:48:47 +0000
Subject: [PATCH] re PR bootstrap/54876 (LTO bootstrap broken, streaming garbage-collected BLOCK)
2012-10-10 Richard Biener <rguenther@suse.de>
PR middle-end/54876
* ipa-prop.c (prune_expression_for_jf_1): New function.
(prune_expression_for_jf): Clear EXPR_LOCATION for all
sub-expressions as well.
From-SVN: r192293
---
gcc/ChangeLog | 7 +++++++
gcc/ipa-prop.c | 14 +++++++++++++-
2 files changed, 20 insertions(+), 1 deletion(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 153abd4..c21398d 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2012-10-10 Richard Biener <rguenther@suse.de>
+
+ PR middle-end/54876
+ * ipa-prop.c (prune_expression_for_jf_1): New function.
+ (prune_expression_for_jf): Clear EXPR_LOCATION for all
+ sub-expressions as well.
+
2012-10-10 Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
* config.gcc: Enable zEC12 for with-arch and with-tune
diff --git a/gcc/ipa-prop.c b/gcc/ipa-prop.c
index fb2346b..714dd8f 100644
--- a/gcc/ipa-prop.c
+++ b/gcc/ipa-prop.c
@@ -287,6 +287,18 @@ ipa_print_all_jump_functions (FILE *f)
}
}
+/* Worker for prune_expression_for_jf. */
+
+static tree
+prune_expression_for_jf_1 (tree *tp, int *walk_subtrees, void *)
+{
+ if (EXPR_P (*tp))
+ SET_EXPR_LOCATION (*tp, UNKNOWN_LOCATION);
+ else
+ *walk_subtrees = 0;
+ return NULL_TREE;
+}
+
/* Return the expression tree EXPR unshared and with location stripped off. */
static tree
@@ -295,7 +307,7 @@ prune_expression_for_jf (tree exp)
if (EXPR_P (exp))
{
exp = unshare_expr (exp);
- SET_EXPR_LOCATION (exp, UNKNOWN_LOCATION);
+ walk_tree (&exp, prune_expression_for_jf_1, NULL, NULL);
}
return exp;
}
--
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