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Simplify use of AVX instructions in internal math macros
This commit is contained in:
Ulrich Drepper
parent
d73f93a461
commit
73139a7628
@ -1,3 +1,7 @@
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2012-01-28 Ulrich Drepper <drepper@gmail.com>
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* sysdeps/x86_64/fpu/math_private.h: Simplify use of AVX instructions.
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2012-01-19 Adhemerval Zanella <azanella@linux.vnet.ibm.com>
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* sysdeps/powerpc/powerpc32/a2/memcpy.S: Fix for when cache line
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@ -21,8 +21,12 @@
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#ifdef __AVX__
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# define MOVD "vmovd"
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# define STMXCSR "vstmxcsr"
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# define LDMXCSR "vldmxcsr"
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#else
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# define MOVD "movd"
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# define STMXCSR "stmxcsr"
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# define LDMXCSR "ldmxcsr"
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#endif
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/* Direct movement of float into integer register. */
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@ -173,7 +177,7 @@
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#define libc_fegetround() \
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({ \
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unsigned int mxcsr; \
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asm volatile ("stmxcsr %0" : "=m" (*&mxcsr)); \
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asm volatile (STMXCSR " %0" : "=m" (*&mxcsr)); \
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(mxcsr & 0x6000) >> 3; \
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})
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#undef libc_fegetroundf
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@ -184,106 +188,63 @@
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#define libc_fesetround(r) \
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do { \
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unsigned int mxcsr; \
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asm ("stmxcsr %0" : "=m" (*&mxcsr)); \
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asm (STMXCSR " %0" : "=m" (*&mxcsr)); \
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mxcsr = (mxcsr & ~0x6000) | ((r) << 3); \
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asm volatile ("ldmxcsr %0" : : "m" (*&mxcsr)); \
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asm volatile (LDMXCSR " %0" : : "m" (*&mxcsr)); \
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} while (0)
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#undef libc_fesetroundf
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#define libc_fesetroundf(r) libc_fesetround (r)
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// #define libc_fesetroundl(r) (void) fesetround (r)
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#undef libc_feholdexcept
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#ifdef __AVX__
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# define libc_feholdexcept(e) \
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#define libc_feholdexcept(e) \
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do { \
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unsigned int mxcsr; \
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asm ("vstmxcsr %0" : "=m" (*&mxcsr)); \
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asm (STMXCSR " %0" : "=m" (*&mxcsr)); \
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(e)->__mxcsr = mxcsr; \
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mxcsr = (mxcsr | 0x1f80) & ~0x3f; \
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asm volatile ("vldmxcsr %0" : : "m" (*&mxcsr)); \
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asm volatile (LDMXCSR " %0" : : "m" (*&mxcsr)); \
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} while (0)
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#else
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# define libc_feholdexcept(e) \
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do { \
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unsigned int mxcsr; \
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asm ("stmxcsr %0" : "=m" (*&mxcsr)); \
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(e)->__mxcsr = mxcsr; \
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mxcsr = (mxcsr | 0x1f80) & ~0x3f; \
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asm volatile ("ldmxcsr %0" : : "m" (*&mxcsr)); \
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} while (0)
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#endif
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#undef libc_feholdexceptf
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#define libc_feholdexceptf(e) libc_feholdexcept (e)
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// #define libc_feholdexceptl(e) (void) feholdexcept (e)
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#undef libc_feholdexcept_setround
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#ifdef __AVX__
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# define libc_feholdexcept_setround(e, r) \
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#define libc_feholdexcept_setround(e, r) \
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do { \
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unsigned int mxcsr; \
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asm ("vstmxcsr %0" : "=m" (*&mxcsr)); \
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asm (STMXCSR " %0" : "=m" (*&mxcsr)); \
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(e)->__mxcsr = mxcsr; \
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mxcsr = ((mxcsr | 0x1f80) & ~0x603f) | ((r) << 3); \
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asm volatile ("vldmxcsr %0" : : "m" (*&mxcsr)); \
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asm volatile (LDMXCSR " %0" : : "m" (*&mxcsr)); \
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} while (0)
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#else
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# define libc_feholdexcept_setround(e, r) \
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do { \
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unsigned int mxcsr; \
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asm ("stmxcsr %0" : "=m" (*&mxcsr)); \
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(e)->__mxcsr = mxcsr; \
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mxcsr = ((mxcsr | 0x1f80) & ~0x603f) | ((r) << 3); \
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asm volatile ("ldmxcsr %0" : : "m" (*&mxcsr)); \
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} while (0)
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#endif
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#undef libc_feholdexcept_setroundf
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#define libc_feholdexcept_setroundf(e, r) libc_feholdexcept_setround (e, r)
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// #define libc_feholdexcept_setroundl(e, r) ...
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#undef libc_fetestexcept
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#ifdef __AVX__
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# define libc_fetestexcept(e) \
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({ unsigned int mxcsr; asm volatile ("vstmxcsr %0" : "=m" (*&mxcsr)); \
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#define libc_fetestexcept(e) \
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({ unsigned int mxcsr; asm volatile (STMXCSR " %0" : "=m" (*&mxcsr)); \
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mxcsr & (e) & FE_ALL_EXCEPT; })
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#else
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# define libc_fetestexcept(e) \
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({ unsigned int mxcsr; asm volatile ("stmxcsr %0" : "=m" (*&mxcsr)); \
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mxcsr & (e) & FE_ALL_EXCEPT; })
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#endif
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#undef libc_fetestexceptf
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#define libc_fetestexceptf(e) libc_fetestexcept (e)
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// #define libc_fetestexceptl(e) fetestexcept (e)
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#undef libc_fesetenv
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#ifdef __AVX__
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# define libc_fesetenv(e) \
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asm volatile ("vldmxcsr %0" : : "m" ((e)->__mxcsr))
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#else
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# define libc_fesetenv(e) \
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asm volatile ("ldmxcsr %0" : : "m" ((e)->__mxcsr))
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#endif
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#define libc_fesetenv(e) \
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asm volatile (LDMXCSR " %0" : : "m" ((e)->__mxcsr))
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#undef libc_fesetenvf
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#define libc_fesetenvf(e) libc_fesetenv (e)
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// #define libc_fesetenvl(e) (void) fesetenv (e)
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#undef libc_feupdateenv
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#ifdef __AVX__
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# define libc_feupdateenv(e) \
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#define libc_feupdateenv(e) \
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do { \
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unsigned int mxcsr; \
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asm volatile ("vstmxcsr %0" : "=m" (*&mxcsr)); \
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asm volatile ("vldmxcsr %0" : : "m" ((e)->__mxcsr)); \
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asm volatile (STMXCSR " %0" : "=m" (*&mxcsr)); \
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asm volatile (LDMXCSR " %0" : : "m" ((e)->__mxcsr)); \
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__feraiseexcept (mxcsr & FE_ALL_EXCEPT); \
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} while (0)
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#else
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# define libc_feupdateenv(e) \
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do { \
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unsigned int mxcsr; \
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asm volatile ("stmxcsr %0" : "=m" (*&mxcsr)); \
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asm volatile ("ldmxcsr %0" : : "m" ((e)->__mxcsr)); \
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__feraiseexcept (mxcsr & FE_ALL_EXCEPT); \
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} while (0)
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#endif
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#undef libc_feupdateenvf
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#define libc_feupdateenvf(e) libc_feupdateenv (e)
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// #define libc_feupdateenvl(e) (void) feupdateenv (e)
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