From 6e3becf7cd895bd16906d9aa0627d98f30a09c6a Mon Sep 17 00:00:00 2001
From: wilson <wilson@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Wed, 11 Apr 2001 20:19:43 +0000
Subject: [PATCH] Fix PR 2520, a problem with structure parameter passing.
* config/ia64/ia64.h (FUNCTION_ARG_BOUNDARY): Return 128 if argument
requires more than 64 bits of alignment.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@41269 138bc75d-0d04-0410-961f-82ee72b054a4
---
gcc/ChangeLog | 5 +++++
gcc/config/ia64/ia64.h | 10 +++++++---
2 files changed, 12 insertions(+), 3 deletions(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 12198f23542a..9ff706e65324 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2001-04-11 Jim Wilson <wilson@redhat.com>
+
+ * config/ia64/ia64.h (FUNCTION_ARG_BOUNDARY): Return 128 if argument
+ requires more than 64 bits of alignment.
+
2001-04-11 Neil Booth <neil@daikokuya.demon.co.uk>
* cpplib.c (do_line): Sanity check iff enable checking.
diff --git a/gcc/config/ia64/ia64.h b/gcc/config/ia64/ia64.h
index 8acbef13127a..956abd02a327 100644
--- a/gcc/config/ia64/ia64.h
+++ b/gcc/config/ia64/ia64.h
@@ -1382,11 +1382,15 @@ do { \
/* If defined, a C expression that gives the alignment boundary, in bits, of an
argument with the specified mode and type. */
-/* Arguments larger than 64 bits require 128 bit alignment. */
+/* Arguments with alignment larger than 8 bytes start at the next even
+ boundary. See ia64_function_arg. */
#define FUNCTION_ARG_BOUNDARY(MODE, TYPE) \
- (((((MODE) == BLKmode ? int_size_in_bytes (TYPE) : GET_MODE_SIZE (MODE)) \
- + UNITS_PER_WORD - 1) / UNITS_PER_WORD) > 1 ? 128 : PARM_BOUNDARY)
+ (((TYPE) ? (TYPE_ALIGN (TYPE) > 8 * BITS_PER_UNIT) \
+ : (((((MODE) == BLKmode \
+ ? int_size_in_bytes (TYPE) : GET_MODE_SIZE (MODE)) \
+ + UNITS_PER_WORD - 1) / UNITS_PER_WORD) > 1)) \
+ ? 128 : PARM_BOUNDARY)
/* A C expression that is nonzero if REGNO is the number of a hard register in
which function arguments are sometimes passed. This does *not* include
--
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