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re PR target/39942 (Nonoptimal code - leaveq; xchg %ax,%ax; retq)

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PR target/39942
	* config/i386/x86-64.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Don't emit second
	.p2align 3 if MAX_SKIP is smaller than 7.
	* config/i386/linux.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.

From-SVN: r147606
This commit is contained in:
Jakub Jelinek 2009-05-16 09:09:52 +02:00 • committed by Jakub Jelinek
parent 7e5487a214
commit a99c6711f8
3 changed files with 14 additions and 3 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2009-05-16 Jakub Jelinek <jakub@redhat.com>
PR target/39942
* config/i386/x86-64.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Don't emit second
.p2align 3 if MAX_SKIP is smaller than 7.
* config/i386/linux.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
2009-05-15 Ian Lance Taylor <iant@google.com>
* alias.c (struct alias_set_entry_d): Rename from struct

6
gcc/config/i386/linux.h
View file

@ -1,6 +1,6 @@
/* Definitions for Intel 386 running Linux-based GNU systems with ELF format.
Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2001, 2002, 2004, 2005,
2006, 2007, 2008 Free Software Foundation, Inc.
2006, 2007, 2008, 2009 Free Software Foundation, Inc.
Contributed by Eric Youngdale.
Modified for stabs-in-ELF by H.J. Lu.
@ -153,7 +153,9 @@ along with GCC; see the file COPYING3. If not see
fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
/* Make sure that we have at least 8 byte alignment if > 8 byte \
alignment is preferred. */ \
if ((LOG) > 3 && (1 << (LOG)) > ((MAX_SKIP) + 1)) \
if ((LOG) > 3 \
&& (1 << (LOG)) > ((MAX_SKIP) + 1) \
&& (MAX_SKIP) >= 7) \
fprintf ((FILE), "\t.p2align 3\n"); \
} \
} \

4
gcc/config/i386/x86-64.h
View file

@ -74,7 +74,9 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
/* Make sure that we have at least 8 byte alignment if > 8 byte \
alignment is preferred. */ \
if ((LOG) > 3 && (1 << (LOG)) > ((MAX_SKIP) + 1)) \
if ((LOG) > 3 \
&& (1 << (LOG)) > ((MAX_SKIP) + 1) \
&& (MAX_SKIP) >= 7) \
fprintf ((FILE), "\t.p2align 3\n"); \
} \
} \