From 652abe22205f268c90b3b15f28c56c030ef68a34 Mon Sep 17 00:00:00 2001 From: David Edelsohn Date: Tue, 11 May 2021 21:07:19 -0400 Subject: [PATCH] aix: align text CSECTs to at least 32 bytes. gcc/ChangeLog: * config/rs6000/rs6000.c (rs6000_xcoff_section_type_flags): Increase code CSECT alignment to at least 32 bytes. * config/rs6000/xcoff.h (TEXT_SECTION_ASM_OP): Add 32 byte alignment designation. --- gcc/config/rs6000/rs6000.c | 6 +++++- gcc/config/rs6000/xcoff.h | 3 ++- 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c index 2c249e1..075c156 100644 --- a/gcc/config/rs6000/rs6000.c +++ b/gcc/config/rs6000/rs6000.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-3.0-or-later /* Subroutines used for code generation on IBM RS/6000. Copyright (C) 1991-2021 Free Software Foundation, Inc. Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu) @@ -21361,8 +21362,11 @@ rs6000_xcoff_section_type_flags (tree decl, const char *name, int reloc) flags |= SECTION_BSS; /* Align to at least UNIT size. */ - if ((flags & SECTION_CODE) != 0 || !decl || !DECL_P (decl)) + if (!decl || !DECL_P (decl)) align = MIN_UNITS_PER_WORD; + /* Align code CSECT to at least 32 bytes. */ + else if ((flags & SECTION_CODE) != 0) + align = MAX ((DECL_ALIGN (decl) / BITS_PER_UNIT), 32); else /* Increase alignment of large objects if not already stricter. */ align = MAX ((DECL_ALIGN (decl) / BITS_PER_UNIT), diff --git a/gcc/config/rs6000/xcoff.h b/gcc/config/rs6000/xcoff.h index 5ba565f..f3546fa 100644 --- a/gcc/config/rs6000/xcoff.h +++ b/gcc/config/rs6000/xcoff.h @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-3.0-or-later /* Definitions of target machine for GNU compiler, for some generic XCOFF file format Copyright (C) 2001-2021 Free Software Foundation, Inc. @@ -249,7 +250,7 @@ #define DOUBLE_INT_ASM_OP "\t.llong\t" /* Output before instructions. */ -#define TEXT_SECTION_ASM_OP "\t.csect .text[PR]" +#define TEXT_SECTION_ASM_OP "\t.csect .text[PR],5" /* Output before writable data. */ #define DATA_SECTION_ASM_OP \ -- 2.7.4