diff options
| -rw-r--r-- | ChangeLog | 13 | ||||
| -rw-r--r-- | NEWS | 2 | ||||
| -rw-r--r-- | sysdeps/x86_64/fpu/bits/mathinline.h | 48 |
3 files changed, 54 insertions, 9 deletions
@@ -1,4 +1,17 @@ 2012-05-09 Andreas Jaeger <aj@suse.de> + + [BZ #14053] + * sysdeps/x86_64/fpu/bits/mathinline.h (lrintf): Add __volatile + to asm. + (lrint): Likewise. + (llrintf): Likewise. + (llrint): Likewise. + (rint): Likewise. + (rintf): Likewise. + (nearbyint): Likewise. + (nearbyintf): Likewise. + +2012-05-09 Andreas Jaeger <aj@suse.de> Pedro Alves <palves@redhat.com> * nscd/nscd.c (run_mode): Use enum. @@ -24,7 +24,7 @@ Version 2.16 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917, 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928, 13938, 13941, 13942, 13963, 13967, 13970, 13973, 13979, 13983, 14027, - 14033, 14034, 14040, 14049, 14055, 14064, 14080, 14083 + 14033, 14034, 14040, 14049, 14053, 14055, 14064, 14080, 14083 * ISO C11 support: diff --git a/sysdeps/x86_64/fpu/bits/mathinline.h b/sysdeps/x86_64/fpu/bits/mathinline.h index c072f16..49a199b 100644 --- a/sysdeps/x86_64/fpu/bits/mathinline.h +++ b/sysdeps/x86_64/fpu/bits/mathinline.h @@ -79,7 +79,11 @@ __MATH_INLINE long int __NTH (lrintf (float __x)) { long int __res; - __asm ("cvtss2si %1, %0" : "=r" (__res) : "xm" (__x)); + /* Mark as volatile since the result is dependend on the state of + the SSE control register (the rounding mode). Otherwise GCC might + remove these assembler instructions since it does not know about + the rounding mode change and cannot currently be told. */ + __asm __volatile__ ("cvtss2si %1, %0" : "=r" (__res) : "xm" (__x)); return __res; } # endif @@ -88,7 +92,11 @@ __MATH_INLINE long int __NTH (lrint (double __x)) { long int __res; - __asm ("cvtsd2si %1, %0" : "=r" (__res) : "xm" (__x)); + /* Mark as volatile since the result is dependend on the state of + the SSE control register (the rounding mode). Otherwise GCC might + remove these assembler instructions since it does not know about + the rounding mode change and cannot currently be told. */ + __asm __volatile__ ("cvtsd2si %1, %0" : "=r" (__res) : "xm" (__x)); return __res; } # endif @@ -97,14 +105,22 @@ __MATH_INLINE long long int __NTH (llrintf (float __x)) { long long int __res; - __asm ("cvtss2si %1, %0" : "=r" (__res) : "xm" (__x)); + /* Mark as volatile since the result is dependend on the state of + the SSE control register (the rounding mode). Otherwise GCC might + remove these assembler instructions since it does not know about + the rounding mode change and cannot currently be told. */ + __asm __volatile__ ("cvtss2si %1, %0" : "=r" (__res) : "xm" (__x)); return __res; } __MATH_INLINE long long int __NTH (llrint (double __x)) { long long int __res; - __asm ("cvtsd2si %1, %0" : "=r" (__res) : "xm" (__x)); + /* Mark as volatile since the result is dependend on the state of + the SSE control register (the rounding mode). Otherwise GCC might + remove these assembler instructions since it does not know about + the rounding mode change and cannot currently be told. */ + __asm __volatile__ ("cvtsd2si %1, %0" : "=r" (__res) : "xm" (__x)); return __res; } # endif @@ -176,14 +192,22 @@ __MATH_INLINE double __NTH (rint (double __x)) { double __res; - __asm ("roundsd $4, %1, %0" : "=x" (__res) : "xm" (__x)); + /* Mark as volatile since the result is dependend on the state of + the SSE control register (the rounding mode). Otherwise GCC might + remove these assembler instructions since it does not know about + the rounding mode change and cannot currently be told. */ + __asm __volatile__ ("roundsd $4, %1, %0" : "=x" (__res) : "xm" (__x)); return __res; } __MATH_INLINE float __NTH (rintf (float __x)) { float __res; - __asm ("roundss $4, %1, %0" : "=x" (__res) : "xm" (__x)); + /* Mark as volatile since the result is dependend on the state of + the SSE control register (the rounding mode). Otherwise GCC might + remove these assembler instructions since it does not know about + the rounding mode change and cannot currently be told. */ + __asm __volatile__ ("roundss $4, %1, %0" : "=x" (__res) : "xm" (__x)); return __res; } @@ -193,14 +217,22 @@ __MATH_INLINE double __NTH (nearbyint (double __x)) { double __res; - __asm ("roundsd $0xc, %1, %0" : "=x" (__res) : "xm" (__x)); + /* Mark as volatile since the result is dependend on the state of + the SSE control register (the rounding mode). Otherwise GCC might + remove these assembler instructions since it does not know about + the rounding mode change and cannot currently be told. */ + __asm __volatile__ ("roundsd $0xc, %1, %0" : "=x" (__res) : "xm" (__x)); return __res; } __MATH_INLINE float __NTH (nearbyintf (float __x)) { float __res; - __asm ("roundss $0xc, %1, %0" : "=x" (__res) : "xm" (__x)); + /* Mark as volatile since the result is dependend on the state of + the SSE control register (the rounding mode). Otherwise GCC might + remove these assembler instructions since it does not know about + the rounding mode change and cannot currently be told. */ + __asm __volatile__ ("roundss $0xc, %1, %0" : "=x" (__res) : "xm" (__x)); return __res; } # endif |