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authorDenys Vlasenko <dvlasenk@redhat.com>2018-07-04 07:35:37 +0000
committerMartin Liska <marxin@gcc.gnu.org>2018-07-04 07:35:37 +0000
commitdd047c67e45c244c147a8244671154c77a9bda47 (patch)
tree335bdcdc2ff7703f446f9c2343a21c00f3d15cb6
parent7709f595efd867318f501db72832fe420dad8560 (diff)
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Temporary remove "at least 8 byte alignment" code from x86
2018-07-04 Denys Vlasenko <dvlasenk@redhat.com> * config/i386/dragonfly.h: (ASM_OUTPUT_MAX_SKIP_ALIGN): Use a simpler align directive also if MAXSKIP = ALIGN-1. * config/i386/gas.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise. * config/i386/lynx.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise. * config/i386/netbsd-elf.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise. * config/i386/i386.h (ASM_OUTPUT_MAX_SKIP_PAD): Likewise. * config/i386/freebsd.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Remove "If N is large, do at least 8 byte alignment" code. Add SUBALIGN_LOG define. Use a simpler align directive also if MAXSKIP = ALIGN-1. * config/i386/gnu-user.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise. * config/i386/iamcu.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise. * config/i386/openbsdelf.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise. * config/i386/x86-64.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise. From-SVN: r262374
Diffstat
-rw-r--r--gcc/ChangeLog16
-rw-r--r--gcc/config/i386/dragonfly.h10
-rw-r--r--gcc/config/i386/freebsd.h16
-rw-r--r--gcc/config/i386/gas.h12
-rw-r--r--gcc/config/i386/gnu-user.h16
-rw-r--r--gcc/config/i386/i386.h2
-rw-r--r--gcc/config/i386/iamcu.h16
-rw-r--r--gcc/config/i386/lynx.h6
-rw-r--r--gcc/config/i386/netbsd-elf.h6
-rw-r--r--gcc/config/i386/openbsdelf.h16
-rw-r--r--gcc/config/i386/x86-64.h16
11 files changed, 64 insertions, 68 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 3a6e9de..362ef15 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,19 @@
+2018-07-04 Denys Vlasenko <dvlasenk@redhat.com>
+
+ * config/i386/dragonfly.h: (ASM_OUTPUT_MAX_SKIP_ALIGN):
+ Use a simpler align directive also if MAXSKIP = ALIGN-1.
+ * config/i386/gas.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
+ * config/i386/lynx.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
+ * config/i386/netbsd-elf.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
+ * config/i386/i386.h (ASM_OUTPUT_MAX_SKIP_PAD): Likewise.
+ * config/i386/freebsd.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Remove "If N
+ is large, do at least 8 byte alignment" code. Add SUBALIGN_LOG
+ define. Use a simpler align directive also if MAXSKIP = ALIGN-1.
+ * config/i386/gnu-user.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
+ * config/i386/iamcu.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
+ * config/i386/openbsdelf.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
+ * config/i386/x86-64.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
+
2018-07-04 Martin Liska <mliska@suse.cz>
Jonathan Wakely <jwakely@redhat.com>
diff --git a/gcc/config/i386/dragonfly.h b/gcc/config/i386/dragonfly.h
index a05b364..40774c0 100644
--- a/gcc/config/i386/dragonfly.h
+++ b/gcc/config/i386/dragonfly.h
@@ -69,10 +69,12 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
#undef ASM_OUTPUT_MAX_SKIP_ALIGN
-#define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE, LOG, MAX_SKIP) \
- if ((LOG) != 0) { \
- if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
- else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
+#define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE, LOG, MAX_SKIP) \
+ if ((LOG) != 0) { \
+ if ((MAX_SKIP) == 0 || (MAX_SKIP) >= (1 << (LOG)) - 1) \
+ fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
+ else \
+ fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
}
#endif
diff --git a/gcc/config/i386/freebsd.h b/gcc/config/i386/freebsd.h
index 0f38e6d..caac6b3 100644
--- a/gcc/config/i386/freebsd.h
+++ b/gcc/config/i386/freebsd.h
@@ -92,25 +92,19 @@ along with GCC; see the file COPYING3. If not see
/* A C statement to output to the stdio stream FILE an assembler
command to advance the location counter to a multiple of 1<<LOG
- bytes if it is within MAX_SKIP bytes.
+ bytes if it is within MAX_SKIP bytes. */
- This is used to align code labels according to Intel recommendations. */
+#define SUBALIGN_LOG 3
#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
#undef ASM_OUTPUT_MAX_SKIP_ALIGN
#define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \
do { \
if ((LOG) != 0) { \
- if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
- else { \
+ if ((MAX_SKIP) == 0 || (MAX_SKIP) >= (1 << (LOG)) - 1) \
+ fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
+ else \
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) \
- && (MAX_SKIP) >= 7) \
- fputs ("\t.p2align 3\n", (FILE)); \
- } \
} \
} while (0)
#endif
diff --git a/gcc/config/i386/gas.h b/gcc/config/i386/gas.h
index 25d5f78..e149ab1 100644
--- a/gcc/config/i386/gas.h
+++ b/gcc/config/i386/gas.h
@@ -57,7 +57,7 @@ along with GCC; see the file COPYING3. If not see
#ifdef HAVE_GAS_BALIGN_AND_P2ALIGN
#undef ASM_OUTPUT_ALIGN
#define ASM_OUTPUT_ALIGN(FILE,LOG) \
- if ((LOG)!=0) fprintf ((FILE), "\t.balign %d\n", 1<<(LOG))
+ if ((LOG)!=0) fprintf ((FILE), "\t.balign %d\n", 1 << (LOG))
#endif
/* A C statement to output to the stdio stream FILE an assembler
@@ -68,10 +68,12 @@ along with GCC; see the file COPYING3. If not see
#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
# define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \
- if ((LOG) != 0) {\
- if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
- else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
- }
+ if ((LOG) != 0) { \
+ if ((MAX_SKIP) == 0 || (MAX_SKIP) >= (1<<(LOG))-1) \
+ fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
+ else \
+ fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
+ }
#endif
/* A C statement or statements which output an assembler instruction
diff --git a/gcc/config/i386/gnu-user.h b/gcc/config/i386/gnu-user.h
index 56449a5..a922c9b 100644
--- a/gcc/config/i386/gnu-user.h
+++ b/gcc/config/i386/gnu-user.h
@@ -95,24 +95,18 @@ along with GCC; see the file COPYING3. If not see
/* A C statement to output to the stdio stream FILE an assembler
command to advance the location counter to a multiple of 1<<LOG
- bytes if it is within MAX_SKIP bytes.
+ bytes if it is within MAX_SKIP bytes. */
- This is used to align code labels according to Intel recommendations. */
+#define SUBALIGN_LOG 3
#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
#define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \
do { \
if ((LOG) != 0) { \
- if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
- else { \
+ if ((MAX_SKIP) == 0 || (MAX_SKIP) >= (1 << (LOG)) - 1) \
+ fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
+ else \
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) \
- && (MAX_SKIP) >= 7) \
- fputs ("\t.p2align 3\n", (FILE)); \
- } \
} \
} while (0)
#endif
diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h
index 049760e..fbba598 100644
--- a/gcc/config/i386/i386.h
+++ b/gcc/config/i386/i386.h
@@ -2201,7 +2201,7 @@ extern int const svr4_dbx_register_map[FIRST_PSEUDO_REGISTER];
#define ASM_OUTPUT_MAX_SKIP_PAD(FILE, LOG, MAX_SKIP) \
if ((LOG) != 0) \
{ \
- if ((MAX_SKIP) == 0) \
+ if ((MAX_SKIP) == 0 || (MAX_SKIP) >= (1 << (LOG)) - 1) \
fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
else \
fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
diff --git a/gcc/config/i386/iamcu.h b/gcc/config/i386/iamcu.h
index b30132f..4e7c569 100644
--- a/gcc/config/i386/iamcu.h
+++ b/gcc/config/i386/iamcu.h
@@ -62,23 +62,17 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
/* A C statement to output to the stdio stream FILE an assembler
command to advance the location counter to a multiple of 1<<LOG
- bytes if it is within MAX_SKIP bytes.
+ bytes if it is within MAX_SKIP bytes. */
- This is used to align code labels according to Intel recommendations. */
+#define SUBALIGN_LOG 3
#define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \
do { \
if ((LOG) != 0) { \
- if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
- else { \
+ if ((MAX_SKIP) == 0 || (MAX_SKIP) >= (1 << (LOG)) - 1) \
+ fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
+ else \
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) \
- && (MAX_SKIP) >= 7) \
- fputs ("\t.p2align 3\n", (FILE)); \
- } \
} \
} while (0)
diff --git a/gcc/config/i386/lynx.h b/gcc/config/i386/lynx.h
index 404a251..6f4013e 100644
--- a/gcc/config/i386/lynx.h
+++ b/gcc/config/i386/lynx.h
@@ -61,8 +61,10 @@ along with GCC; see the file COPYING3. If not see
#define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \
do { \
if ((LOG) != 0) { \
- if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
- else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
+ if ((MAX_SKIP) == 0 || (MAX_SKIP) >= (1 << (LOG)) - 1) \
+ fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
+ else \
+ fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
} \
} while (0)
#endif
diff --git a/gcc/config/i386/netbsd-elf.h b/gcc/config/i386/netbsd-elf.h
index c1c1e03..1aa96cd 100644
--- a/gcc/config/i386/netbsd-elf.h
+++ b/gcc/config/i386/netbsd-elf.h
@@ -104,8 +104,10 @@ along with GCC; see the file COPYING3. If not see
#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
#define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE, LOG, MAX_SKIP) \
if ((LOG) != 0) { \
- if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
- else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
+ if ((MAX_SKIP) == 0 || (MAX_SKIP) >= (1 << (LOG)) - 1) \
+ fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
+ else \
+ fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
}
#endif
diff --git a/gcc/config/i386/openbsdelf.h b/gcc/config/i386/openbsdelf.h
index 8de1b99..705e904 100644
--- a/gcc/config/i386/openbsdelf.h
+++ b/gcc/config/i386/openbsdelf.h
@@ -63,24 +63,18 @@ along with GCC; see the file COPYING3. If not see
/* A C statement to output to the stdio stream FILE an assembler
command to advance the location counter to a multiple of 1<<LOG
- bytes if it is within MAX_SKIP bytes.
+ bytes if it is within MAX_SKIP bytes. */
- This is used to align code labels according to Intel recommendations. */
+#define SUBALIGN_LOG 3
#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
#define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \
do { \
if ((LOG) != 0) { \
- if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
- else { \
+ if ((MAX_SKIP) == 0 || (MAX_SKIP) >= (1 << (LOG)) - 1) \
+ fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
+ else \
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) \
- && (MAX_SKIP) >= 7) \
- fputs ("\t.p2align 3\n", (FILE)); \
- } \
} \
} while (0)
#endif
diff --git a/gcc/config/i386/x86-64.h b/gcc/config/i386/x86-64.h
index e2a8306..66bbd5e 100644
--- a/gcc/config/i386/x86-64.h
+++ b/gcc/config/i386/x86-64.h
@@ -61,27 +61,23 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
/* This is used to align code labels according to Intel recommendations. */
+#define SUBALIGN_LOG 3
+
#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
#define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \
do { \
if ((LOG) != 0) { \
- if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
- else { \
+ if ((MAX_SKIP) == 0 || (MAX_SKIP) >= (1 << (LOG)) - 1) \
+ fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
+ else \
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) \
- && (MAX_SKIP) >= 7) \
- fputs ("\t.p2align 3\n", (FILE)); \
- } \
} \
} while (0)
#undef ASM_OUTPUT_MAX_SKIP_PAD
#define ASM_OUTPUT_MAX_SKIP_PAD(FILE, LOG, MAX_SKIP) \
if ((LOG) != 0) \
{ \
- if ((MAX_SKIP) == 0) \
+ if ((MAX_SKIP) == 0 || (MAX_SKIP) >= (1<<(LOG))-1) \
fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
else \
fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
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