From 8e1d2e8278cc2bed80ad1a1564cee131996b6129 Mon Sep 17 00:00:00 2001
From: Richard Henderson <rth@redhat.com>
Date: Fri, 31 Dec 2004 18:38:06 -0800
Subject: [PATCH] re PR tree-optimization/19042 (Complex types are not SRA all
the time.)
PR tree-opt/19042
* tree-sra.c (decide_block_copy): Force use_block_copy false
for complex values.
From-SVN: r92782
---
gcc/ChangeLog | 6 ++++++
gcc/tree-sra.c | 7 ++++++-
2 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ebe2b7d7a296..983ad2ce792f 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2004-12-31 Richard Henderson <rth@redhat.com>
+
+ PR tree-opt/19042
+ * tree-sra.c (decide_block_copy): Force use_block_copy false
+ for complex values.
+
2004-12-31 Richard Henderson <rth@redhat.com>
PR middle-end/17799
diff --git a/gcc/tree-sra.c b/gcc/tree-sra.c
index 1c1739b18b21..bb98a8afe6cf 100644
--- a/gcc/tree-sra.c
+++ b/gcc/tree-sra.c
@@ -1293,10 +1293,15 @@ decide_block_copy (struct sra_elt *elt)
tree size_tree = TYPE_SIZE_UNIT (elt->type);
bool use_block_copy = true;
+ /* Tradeoffs for COMPLEX types pretty much always make it better
+ to go ahead and split the components. */
+ if (TREE_CODE (elt->type) == COMPLEX_TYPE)
+ use_block_copy = false;
+
/* Don't bother trying to figure out the rest if the structure is
so large we can't do easy arithmetic. This also forces block
copies for variable sized structures. */
- if (host_integerp (size_tree, 1))
+ else if (host_integerp (size_tree, 1))
{
unsigned HOST_WIDE_INT full_size, inst_size = 0;
unsigned int inst_count;
--
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