From 515e442a91225d15911552d61899a0a0b3ccec61 Mon Sep 17 00:00:00 2001
From: Andy Hutchinson <hutchinsonandy@aim.com>
Date: Wed, 4 Jun 2008 21:59:54 +0000
Subject: [PATCH] re PR target/30243 ([avr] signbit() causes an internal
compiler error)
PR target/30243
* builtins.c (expand_builtin_signbit): Don't take lowpart when register is already smaller or equal to required mode.
From-SVN: r136376
---
gcc/ChangeLog | 6 ++++++
gcc/builtins.c | 2 +-
2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 96de8a056907..d1930ad7ceea 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2008-06-04 Andy Hutchinson <hutchinsonandy@aim.com>
+
+ PR target/30243
+ * builtins.c (expand_builtin_signbit): Don't take lowpart when
+ register is already smaller or equal to required mode.
+
2008-06-04 Xinliang David Li <davidxl@google.com>
* tree-call-cdce.c: New file.
diff --git a/gcc/builtins.c b/gcc/builtins.c
index 05eb6bbdd985..f2c6ed488af1 100644
--- a/gcc/builtins.c
+++ b/gcc/builtins.c
@@ -5786,7 +5786,7 @@ expand_builtin_signbit (tree exp, rtx target)
lo = 0;
}
- if (imode != rmode)
+ if (GET_MODE_SIZE (imode) > GET_MODE_SIZE (rmode))
temp = gen_lowpart (rmode, temp);
temp = expand_binop (rmode, and_optab, temp,
immed_double_const (lo, hi, rmode),
--
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