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[RS6000] Make assembler command line cpu match default for gcc

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When gcc is configured using --with-cpu=<cpu>, the specified cpu
effectively becomes a default -mcpu=<cpu> passed to gcc.  This then
affects the cpu passed to gas via ASM_CPU_SPEC.  If gcc is not
configured using --with-cpu then the cpu passed to gas is that given
by ASM_DEFAULT_SPEC, which currently does not match the default flags
selected in default64.h.  This patch makes ASM_DEFAULT_SPEC agree with
TARGET_DEFAULT flags.

rs6000/default64.h appears in three places in config.gcc, the first
one immediately followed by rs6000/freebsd64.h in $tm_file, and the
other two immediately followed by rs6000/linux64.h.  To be able to
define ASM_DEFAULT_SPEC in rs6000/default64.h we don't want to
redefine in the other two files.  rs6000/freebsd64.h is easy since
that file is always preceded by rs6000/default64.h, but
rs6000/linux64.h can appear without rs6000/default64.h (a
powerpc*-linux config where the default is -m32).  In that case we
will have TARGET_DEFAULT flags of 0 (from rs6000/sysv4.h) and want to
use -mppc without -m64 and -mppc64 with -m64.  This can be done by
using the rs6000/rtems.h ASM_DEFAULT_SPEC in rs6000/sysv4.h, a change
that won't affect sysv4 configurations where -m64 is invalid.

The patch also introduces ASM_DEFAULT_EXTRA for the altivec variant
targets so as to enable -maltivec by default.

	PR target/91050
	* config/rs6000/sysv4.h (ASM_DEFAULT_SPEC): Modify if -m64.
	* config/rs6000/default64.h (ASM_DEFAULT_SPEC): Define.
	* config/rs6000/freebsd64.h (ASM_DEFAULT_SPEC): Don't define.
	* config/rs6000/linux64.h (ASM_DEFAULT_SPEC): Likewise.
	* config/rs6000/rtems.h (ASM_DEFAULT_SPEC): Likewise.
	* config/rs6000/rs6000.h (ASM_DEFAULT_EXTRA): Define and use
	in asm_default spec.
	* config/rs6000/eabialtivec.h (ASM_DEFAULT_EXTRA): Redefine.
	* config/rs6000/linuxaltivec.h (ASM_DEFAULT_EXTRA): Redefine.

From-SVN: r273853
This commit is contained in:
Alan Modra 2019-07-28 18:56:13 +09:30 committed by Alan Modra
parent c5993c9abc
commit 8d85264514
9 changed files with 26 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
gcc/ChangeLog
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@ -1,3 +1,16 @@
2019-07-28 Alan Modra <amodra@gmail.com>
PR target/91050
* config/rs6000/sysv4.h (ASM_DEFAULT_SPEC): Modify if -m64.
* config/rs6000/default64.h (ASM_DEFAULT_SPEC): Define.
* config/rs6000/freebsd64.h (ASM_DEFAULT_SPEC): Don't define.
* config/rs6000/linux64.h (ASM_DEFAULT_SPEC): Likewise.
* config/rs6000/rtems.h (ASM_DEFAULT_SPEC): Likewise.
* config/rs6000/rs6000.h (ASM_DEFAULT_EXTRA): Define and use
in asm_default spec.
* config/rs6000/eabialtivec.h (ASM_DEFAULT_EXTRA): Redefine.
* config/rs6000/linuxaltivec.h (ASM_DEFAULT_EXTRA): Redefine.
2019-07-28 Gerald Pfeifer <gerald@pfeifer.com>
* doc/include/gpl_v3.texi (Copying): Use https for www.gnu.org.

4
gcc/config/rs6000/default64.h
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@ -25,7 +25,11 @@ along with GCC; see the file COPYING3. If not see
#if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
#undef TARGET_DEFAULT
#define TARGET_DEFAULT (ISA_2_7_MASKS_SERVER | MASK_POWERPC64 | MASK_64BIT | MASK_LITTLE_ENDIAN)
#undef ASM_DEFAULT_SPEC
#define ASM_DEFAULT_SPEC "-mpower8"
#else
#undef TARGET_DEFAULT
#define TARGET_DEFAULT (MASK_PPC_GFXOPT | MASK_PPC_GPOPT | MASK_MFCRF | MASK_POWERPC64 | MASK_64BIT)
#undef ASM_DEFAULT_SPEC
#define ASM_DEFAULT_SPEC "-mpower4"
#endif

3
gcc/config/rs6000/eabialtivec.h
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@ -23,5 +23,8 @@
#undef TARGET_DEFAULT
#define TARGET_DEFAULT (MASK_EABI | MASK_ALTIVEC)
#undef ASM_DEFAULT_EXTRA
#define ASM_DEFAULT_EXTRA " %{!mvsx:%{!maltivec:%{!no-maltivec:-maltivec}}}"
#undef SUBSUBTARGET_OVERRIDE_OPTIONS
#define SUBSUBTARGET_OVERRIDE_OPTIONS rs6000_altivec_abi = 1

2
gcc/config/rs6000/freebsd64.h
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@ -134,11 +134,9 @@ extern int dot_symbols;
} \
while (0)
#undef ASM_DEFAULT_SPEC
#undef ASM_SPEC
#undef LINK_OS_FREEBSD_SPEC
#define ASM_DEFAULT_SPEC "-mppc%{!m32:64}"
#define ASM_SPEC "%{m32:%(asm_spec32)}%{!m32:%(asm_spec64)} %(asm_spec_common)"
#define LINK_OS_FREEBSD_SPEC "%{m32:%(link_os_freebsd_spec32)}%{!m32:%(link_os_freebsd_spec64)}"

4
gcc/config/rs6000/linux64.h
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@ -181,24 +181,20 @@ extern int dot_symbols;
} \
while (0)
#undef ASM_DEFAULT_SPEC
#undef ASM_SPEC
#undef LINK_OS_LINUX_SPEC
#undef LINK_SECURE_PLT_SPEC
#ifndef RS6000_BI_ARCH
#define ASM_DEFAULT_SPEC "-mppc64"
#define ASM_SPEC "%(asm_spec64) %(asm_spec_common)"
#define LINK_OS_LINUX_SPEC "%(link_os_linux_spec64)"
#define LINK_SECURE_PLT_SPEC ""
#else
#if DEFAULT_ARCH64_P
#define ASM_DEFAULT_SPEC "-mppc%{!m32:64}"
#define ASM_SPEC "%{m32:%(asm_spec32)}%{!m32:%(asm_spec64)} %(asm_spec_common)"
#define LINK_OS_LINUX_SPEC "%{m32:%(link_os_linux_spec32)}%{!m32:%(link_os_linux_spec64)}"
#define LINK_SECURE_PLT_SPEC "%{m32: " LINK_SECURE_PLT_DEFAULT_SPEC "}"
#else
#define ASM_DEFAULT_SPEC "-mppc%{m64:64}"
#define ASM_SPEC "%{!m64:%(asm_spec32)}%{m64:%(asm_spec64)} %(asm_spec_common)"
#define LINK_OS_LINUX_SPEC "%{!m64:%(link_os_linux_spec32)}%{m64:%(link_os_linux_spec64)}"
#define LINK_SECURE_PLT_SPEC "%{!m64: " LINK_SECURE_PLT_DEFAULT_SPEC "}"

3
gcc/config/rs6000/linuxaltivec.h
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@ -28,5 +28,8 @@
#define TARGET_DEFAULT MASK_ALTIVEC
#endif
#undef ASM_DEFAULT_EXTRA
#define ASM_DEFAULT_EXTRA " %{!mvsx:%{!maltivec:%{!mno-altivec:-maltivec}}}"
#undef SUBSUBTARGET_OVERRIDE_OPTIONS
#define SUBSUBTARGET_OVERRIDE_OPTIONS rs6000_altivec_abi = 1

3
gcc/config/rs6000/rs6000.h
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@ -157,6 +157,7 @@ ASM_OPT_ANY
#define CPP_DEFAULT_SPEC ""
#define ASM_DEFAULT_SPEC ""
#define ASM_DEFAULT_EXTRA ""
/* This macro defines names of additional specifications to put in the specs
that can be used in various specifications like CC1_SPEC. Its definition
@ -174,7 +175,7 @@ ASM_OPT_ANY
{ "cpp_default", CPP_DEFAULT_SPEC }, \
{ "asm_cpu", ASM_CPU_SPEC }, \
{ "asm_cpu_native", ASM_CPU_NATIVE_SPEC }, \
{ "asm_default", ASM_DEFAULT_SPEC }, \
{ "asm_default", ASM_DEFAULT_SPEC ASM_DEFAULT_EXTRA }, \
{ "cc1_cpu", CC1_CPU_SPEC }, \
SUBTARGET_EXTRA_SPECS

3
gcc/config/rs6000/rtems.h
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@ -254,9 +254,6 @@
%{mcpu=8540: %{!Dppc*: %{!Dmpc*: -Dppc8540} } } \
%{mcpu=e6500: -D__PPC_CPU_E6500__}"
#undef ASM_DEFAULT_SPEC
#define ASM_DEFAULT_SPEC "-mppc%{m64:64}"
#undef ASM_SPEC
#define ASM_SPEC "%{!m64:%(asm_spec32)}%{m64:%(asm_spec64)} %(asm_spec_common)"

2
gcc/config/rs6000/sysv4.h
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@ -39,7 +39,7 @@
/* Override rs6000.h definition. */
#undef ASM_DEFAULT_SPEC
#define ASM_DEFAULT_SPEC "-mppc"
#define ASM_DEFAULT_SPEC "-mppc%{m64:64}"
#define TARGET_HAS_TOC (TARGET_64BIT \
|| (TARGET_MINIMAL_TOC \