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Skip a single downconv even if it has multiple users.
author
Christoph Mallon
<christoph.mallon@gmx.de>
Fri, 1 Aug 2008 08:14:28 +0000
(08:14 +0000)
committer
Christoph Mallon
<christoph.mallon@gmx.de>
Fri, 1 Aug 2008 08:14:28 +0000
(08:14 +0000)
[r20878]
ir/opt/convopt.c
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diff --git
a/ir/opt/convopt.c
b/ir/opt/convopt.c
index
4ac59be
..
ca983f0
100644
(file)
--- a/
ir/opt/convopt.c
+++ b/
ir/opt/convopt.c
@@
-106,6
+106,12
@@
int get_conv_costs(const ir_node *node, ir_mode *dest_mode)
return conv_const_tv(node, dest_mode) == tarval_bad ? 1 : 0;
}
return conv_const_tv(node, dest_mode) == tarval_bad ? 1 : 0;
}
+ if (is_Conv(node) &&
+ is_downconv(get_irn_mode(node), dest_mode) &&
+ get_irn_mode(get_Conv_op(node)) == dest_mode) {
+ return -1;
+ }
+
if (get_irn_n_edges(node) > 1) {
DB((dbg, LEVEL_3, "multi outs at %+F\n", node));
return 1;
if (get_irn_n_edges(node) > 1) {
DB((dbg, LEVEL_3, "multi outs at %+F\n", node));
return 1;
@@
-175,6
+181,12
@@
ir_node *conv_transform(ir_node *node, ir_mode *dest_mode)
}
}
}
}
+ if (is_Conv(node) &&
+ is_downconv(get_irn_mode(node), dest_mode) &&
+ get_irn_mode(get_Conv_op(node)) == dest_mode) {
+ return get_Conv_op(node);
+ }
+
if (get_irn_n_edges(node) > 1) {
return place_conv(node, dest_mode);
}
if (get_irn_n_edges(node) > 1) {
return place_conv(node, dest_mode);
}