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rs6000: float128 on BE and 32-bit
This fixes float128 on BE and on 32-bit. The configure tests need to use -mabi=altivec for 32-bit, since it is not the default there. That also enables the "vector" keyword, used by the tests. To do this it temporarily adds a few flags to the CFLAGS variable. It also fixes a syntax error in the libgcc_cv_powerpc_float128_hw test (the function name was missing in the function declaration). Regenerating config.in (via autoreconf) removed the duplicate definition of HAVE_SOLARIS_CRTS. Finally, this adds a "-mfloat128-hardware requires -m64" test to rs6000.c: all the current patterns need 64-bit registers. Maybe we'll want to add float128 hardware support to 32-bit some day, but certainly not today. * config/rs6000/rs6000.c (rs6000_option_override_internal): Disallow -mfloat128-hardware without -m64. libgcc/ * configure.ac (test for libgcc_cv_powerpc_float128): Temporarily modify CFLAGS. Add -mabi=altivec -mvsx -mfloat128. (test for libgcc_cv_powerpc_float128_hw): Add -mpower9-vector and -mfloat128-hardware to the CFLAGS. Fix syntax error in the C snippet. * configure: Regenerate. * config.in: Regenerate. From-SVN: r246043
This commit is contained in:
Segher Boessenkool
Segher Boessenkool
parent
0c942f3eda
commit
7502c5970d
@ -1,5 +1,10 @@
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2017-03-10 Segher Boessenkool <segher@kernel.crashing.org>
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* config/rs6000/rs6000.c (rs6000_option_override_internal): Disallow
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-mfloat128-hardware without -m64.
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2017-03-10 Will Schmidt <will_schmidt@vnet.ibm.com>
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PR target/79941
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* config/rs6000/rs6000.c (builtin_function_type): Add VMUL*U[HB]
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entries to the case statement that marks unsigned arguments to
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@ -4686,6 +4686,14 @@ rs6000_option_override_internal (bool global_init_p)
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rs6000_isa_flags &= ~OPTION_MASK_FLOAT128_HW;
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}
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if (TARGET_FLOAT128_HW && !TARGET_64BIT)
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{
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if ((rs6000_isa_flags_explicit & OPTION_MASK_FLOAT128_HW) != 0)
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error ("-mfloat128-hardware requires -m64");
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rs6000_isa_flags &= ~OPTION_MASK_FLOAT128_HW;
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}
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if (TARGET_FLOAT128_HW && !TARGET_FLOAT128_KEYWORD
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&& (rs6000_isa_flags_explicit & OPTION_MASK_FLOAT128_HW) != 0
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&& (rs6000_isa_flags_explicit & OPTION_MASK_FLOAT128_KEYWORD) == 0)
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@ -1,3 +1,12 @@
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2017-03-10 Segher Boessenkool <segher@kernel.crashing.org>
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* configure.ac (test for libgcc_cv_powerpc_float128): Temporarily
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modify CFLAGS. Add -mabi=altivec -mvsx -mfloat128.
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(test for libgcc_cv_powerpc_float128_hw): Add -mpower9-vector and
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-mfloat128-hardware to the CFLAGS. Fix syntax error in the C snippet.
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* configure: Regenerate.
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* config.in: Regenerate.
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2017-03-02 Jonathan Yong <10walls@gmail.com>
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* config/i386/gthr-win32.h: Define NOGDI before
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@ -21,9 +21,6 @@
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/* Define if the system-provided CRTs are present on Solaris. */
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#undef HAVE_SOLARIS_CRTS
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/* Define if the system-provided CRTs are present on Solaris. */
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#undef HAVE_SOLARIS_CRTS
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/* Define to 1 if you have the <stdint.h> header file. */
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#undef HAVE_STDINT_H
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12
libgcc/configure
vendored
12
libgcc/configure
vendored
@ -4779,6 +4779,8 @@ case ${host} in
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# software libraries, and whether the assembler can handle xsaddqp
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# for hardware support.
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powerpc*-*-linux*)
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saved_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -mabi=altivec -mvsx -mfloat128"
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for PowerPC ISA 2.06 to build __float128 libraries" >&5
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$as_echo_n "checking for PowerPC ISA 2.06 to build __float128 libraries... " >&6; }
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if test "${libgcc_cv_powerpc_float128+set}" = set; then :
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@ -4786,8 +4788,7 @@ if test "${libgcc_cv_powerpc_float128+set}" = set; then :
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else
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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#pragma GCC target ("vsx")
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vector double dadd (vector double a, vector double b) { return a + b; }
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vector double dadd (vector double a, vector double b) { return a + b; }
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_ACEOF
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if ac_fn_c_try_compile "$LINENO"; then :
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libgcc_cv_powerpc_float128=yes
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@ -4799,6 +4800,7 @@ fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libgcc_cv_powerpc_float128" >&5
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$as_echo "$libgcc_cv_powerpc_float128" >&6; }
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CFLAGS="$CFLAGS -mpower9-vector -mfloat128-hardware"
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for PowerPC ISA 3.0 to build hardware __float128 libraries" >&5
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$as_echo_n "checking for PowerPC ISA 3.0 to build hardware __float128 libraries... " >&6; }
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if test "${libgcc_cv_powerpc_float128_hw+set}" = set; then :
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@ -4806,12 +4808,11 @@ if test "${libgcc_cv_powerpc_float128_hw+set}" = set; then :
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else
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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#pragma GCC target ("vsx,power9-vector")
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#include <sys/auxv.h>
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#include <sys/auxv.h>
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#ifndef AT_PLATFORM
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#error "AT_PLATFORM is not defined"
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#endif
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vector unsigned char (vector unsigned char a, vector unsigned char b)
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vector unsigned char add (vector unsigned char a, vector unsigned char b)
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{
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vector unsigned char ret;
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__asm__ ("xsaddqp %0,%1,%2" : "=v" (ret) : "v" (a), "v" (b));
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@ -4830,6 +4831,7 @@ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libgcc_cv_powerpc_float128_hw" >&5
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$as_echo "$libgcc_cv_powerpc_float128_hw" >&6; }
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CFLAGS="$saved_CFLAGS"
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esac
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# Collect host-machine-specific information.
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@ -379,23 +379,24 @@ case ${host} in
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# software libraries, and whether the assembler can handle xsaddqp
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# for hardware support.
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powerpc*-*-linux*)
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saved_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -mabi=altivec -mvsx -mfloat128"
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AC_CACHE_CHECK([for PowerPC ISA 2.06 to build __float128 libraries],
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[libgcc_cv_powerpc_float128],
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[AC_COMPILE_IFELSE(
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[#pragma GCC target ("vsx")
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vector double dadd (vector double a, vector double b) { return a + b; }],
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[vector double dadd (vector double a, vector double b) { return a + b; }],
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[libgcc_cv_powerpc_float128=yes],
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[libgcc_cv_powerpc_float128=no])])
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CFLAGS="$CFLAGS -mpower9-vector -mfloat128-hardware"
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AC_CACHE_CHECK([for PowerPC ISA 3.0 to build hardware __float128 libraries],
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[libgcc_cv_powerpc_float128_hw],
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[AC_COMPILE_IFELSE(
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[#pragma GCC target ("vsx,power9-vector")
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#include <sys/auxv.h>
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[#include <sys/auxv.h>
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#ifndef AT_PLATFORM
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#error "AT_PLATFORM is not defined"
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#endif
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vector unsigned char (vector unsigned char a, vector unsigned char b)
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vector unsigned char add (vector unsigned char a, vector unsigned char b)
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{
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vector unsigned char ret;
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__asm__ ("xsaddqp %0,%1,%2" : "=v" (ret) : "v" (a), "v" (b));
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@ -406,6 +407,7 @@ powerpc*-*-linux*)
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__attribute__ ((__ifunc__ ("add_resolver")));],
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[libgcc_cv_powerpc_float128_hw=yes],
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[libgcc_cv_powerpc_float128_hw=no])])
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CFLAGS="$saved_CFLAGS"
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esac
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# Collect host-machine-specific information.
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