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glibc/sysdeps/powerpc/fpu
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Gabriel F. T. Gomes 4d98ace9de powerpc: Restrict xssqrtqp operands to Vector Registers (bug 21941) 
POWER ISA 3.0 introduces the xssqrtqp instructions, which expects
operands to be in Vector Registers (Altivec/VMX), even though this
instruction belongs to the Vector-Scalar Instruction Set.

In GCC's Extended Assembly for POWER, the 'wq' register constraint is
provided for use with IEEE 754 128-bit floating-point values.  However,
this constraint does not limit the register allocation to Vector
Registers (Altivec/VMX) and could assign a Vector-Scalar Register (VSX)
to the operands of the instruction.

This patch changes the register constraint used in sqrtf128 from 'wq' to
'v', in order to request a Vector Register (Altivec/VMX) for use with
the xssqrtqp instruction.

Tested for powerpc64le and --with-cpu=power9.

	[BZ #21941]
	* sysdeps/powerpc/fpu/math_private.h (__ieee754_sqrtf128): Since
	xssqrtqp requires operands to be in Vector Registers
	(Altivec/VMX), replace the register constraint 'wq' with 'v'.
	* sysdeps/powerpc/powerpc64le/power9/fpu/e_sqrtf128.c
	(__ieee754_sqrtf128): Likewise.
2017-08-10 16:10:21 -03:00
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e_hypot.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
e_hypotf.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
e_rem_pio2f.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
e_sqrt.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
e_sqrtf.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
fclrexcpt.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
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fenv_const.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
fenv_libc.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
fenv_private.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
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fgetexcptflg.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
fix-fp-int-compare-invalid.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
fraiseexcpt.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
fsetexcptflg.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
ftestexcept.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
k_cosf.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
k_rem_pio2f.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
k_sinf.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
libm-test-ulps powerpc64le: Enable float128 2017-06-26 15:04:47 -03:00
libm-test-ulps-name Do not hardcode platform names in manual/libm-err-tab.pl (bug 14139). 2016-11-04 16:49:06 +00:00
Makefile Link extra-libs consistently with libc and ld.so. 2013-05-31 16:16:33 +00:00
math_ldbl.h Allow direct use of math_ldbl.h in testsuite. 2017-02-25 10:40:48 -05:00
math_private.h powerpc: Restrict xssqrtqp operands to Vector Registers (bug 21941) 2017-08-10 16:10:21 -03:00
s_cosf.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_fabs.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_fabsf.S
s_float_bitwise.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_fma.S PowerPC64 ENTRY_TOCLESS 2017-06-14 10:45:50 +09:30
s_fmaf.S PowerPC64 ENTRY_TOCLESS 2017-06-14 10:45:50 +09:30
s_isnan.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_isnanf.S
s_lrintf.S
s_rint.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
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s_sinf.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
t_sqrt.c Remove trailing whitespace. 2013-06-05 20:44:03 +00:00
tst-setcontext-fpscr.c Miscellaneous low-risk changes preparing for _ISOMAC testsuite. 2017-03-01 20:32:50 -05:00