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The EXTRACT_WORDS64 and INSERT_WORDS64 macros use movd for a 64-bit operation. Somehow gcc manages to turn this into movq, but LLVM won't. 2013-05-15 Peter Collingbourne <pcc@google.com> * sysdeps/x86_64/fpu/math_private.h (MOVQ): New macro. (EXTRACT_WORDS64) Use where appropriate. (INSERT_WORDS64) Likewise.
134 lines
3.0 KiB
C
134 lines
3.0 KiB
C
#ifndef X86_64_MATH_PRIVATE_H
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#define X86_64_MATH_PRIVATE_H 1
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/* We can do a few things better on x86-64. */
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#if defined __AVX__ || defined SSE2AVX
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# define MOVD "vmovd"
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# define MOVQ "vmovq"
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#else
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# define MOVD "movd"
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# define MOVQ "movq"
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#endif
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/* Direct movement of float into integer register. */
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#define EXTRACT_WORDS64(i, d) \
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do { \
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int64_t i_; \
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asm (MOVQ " %1, %0" : "=rm" (i_) : "x" ((double) (d))); \
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(i) = i_; \
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} while (0)
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/* And the reverse. */
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#define INSERT_WORDS64(d, i) \
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do { \
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int64_t i_ = i; \
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double d__; \
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asm (MOVQ " %1, %0" : "=x" (d__) : "rm" (i_)); \
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d = d__; \
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} while (0)
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/* Direct movement of float into integer register. */
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#define GET_FLOAT_WORD(i, d) \
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do { \
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int i_; \
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asm (MOVD " %1, %0" : "=rm" (i_) : "x" ((float) (d))); \
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(i) = i_; \
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} while (0)
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/* And the reverse. */
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#define SET_FLOAT_WORD(f, i) \
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do { \
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int i_ = i; \
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float f__; \
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asm (MOVD " %1, %0" : "=x" (f__) : "rm" (i_)); \
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f = f__; \
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} while (0)
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#include <sysdeps/i386/fpu/fenv_private.h>
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#include_next <math_private.h>
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extern __always_inline double
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__ieee754_sqrt (double d)
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{
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double res;
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#if defined __AVX__ || defined SSE2AVX
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asm ("vsqrtsd %1, %0, %0" : "=x" (res) : "xm" (d));
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#else
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asm ("sqrtsd %1, %0" : "=x" (res) : "xm" (d));
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#endif
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return res;
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}
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extern __always_inline float
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__ieee754_sqrtf (float d)
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{
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float res;
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#if defined __AVX__ || defined SSE2AVX
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asm ("vsqrtss %1, %0, %0" : "=x" (res) : "xm" (d));
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#else
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asm ("sqrtss %1, %0" : "=x" (res) : "xm" (d));
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#endif
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return res;
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}
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extern __always_inline long double
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__ieee754_sqrtl (long double d)
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{
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long double res;
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asm ("fsqrt" : "=t" (res) : "0" (d));
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return res;
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}
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#ifdef __SSE4_1__
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extern __always_inline double
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__rint (double d)
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{
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double res;
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# if defined __AVX__ || defined SSE2AVX
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asm ("vroundsd $4, %1, %0, %0" : "=x" (res) : "xm" (d));
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# else
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asm ("roundsd $4, %1, %0" : "=x" (res) : "xm" (d));
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# endif
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return res;
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}
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extern __always_inline float
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__rintf (float d)
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{
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float res;
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# if defined __AVX__ || defined SSE2AVX
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asm ("vroundss $4, %1, %0, %0" : "=x" (res) : "xm" (d));
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# else
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asm ("roundss $4, %1, %0" : "=x" (res) : "xm" (d));
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# endif
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return res;
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}
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extern __always_inline double
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__floor (double d)
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{
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double res;
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# if defined __AVX__ || defined SSE2AVX
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asm ("vroundsd $1, %1, %0, %0" : "=x" (res) : "xm" (d));
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# else
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asm ("roundsd $1, %1, %0" : "=x" (res) : "xm" (d));
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# endif
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return res;
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}
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extern __always_inline float
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__floorf (float d)
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{
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float res;
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# if defined __AVX__ || defined SSE2AVX
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asm ("vroundss $1, %1, %0, %0" : "=x" (res) : "xm" (d));
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# else
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asm ("roundss $1, %1, %0" : "=x" (res) : "xm" (d));
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# endif
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return res;
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}
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#endif /* __SSE4_1__ */
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#endif /* X86_64_MATH_PRIVATE_H */
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