libgcc2.c: Correct DI/TI -> SF/DF conversions
FSTYPE FUNC (DWtype u) in libgcc2.c, which converts DI/TI to SF/DF, has /* No leading bits means u == minimum. */ if (count == 0) return -(Wtype_MAXp1_F * (Wtype_MAXp1_F / 2)); in the third case (where actually count == 0 only means the high part is minimum). It should be: /* No leading bits means u == minimum. */ if (count == 0) return Wtype_MAXp1_F * (FSTYPE) (hi | ((UWtype) u != 0)); instead. gcc/testsuite/ 2019-01-23 H.J. Lu <hongjiu.lu@intel.com> PR libgcc/88931 * gcc.dg/torture/fp-int-convert-timode-1.c: New test. * gcc.dg/torture/fp-int-convert-timode-2.c: Likewise. * gcc.dg/torture/fp-int-convert-timode-3.c: Likewise. * gcc.dg/torture/fp-int-convert-timode-4.c: Likewise. libgcc/ 2019-01-23 Joseph Myers <joseph@codesourcery.com> PR libgcc/88931 * libgcc2.c (FSTYPE FUNC (DWtype u)): Correct no leading bits case. From-SVN: r268216
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2019-01-23 H.J. Lu <hongjiu.lu@intel.com>
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PR libgcc/88931
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* gcc.dg/torture/fp-int-convert-timode-1.c: New test.
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* gcc.dg/torture/fp-int-convert-timode-2.c: Likewise.
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* gcc.dg/torture/fp-int-convert-timode-3.c: Likewise.
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* gcc.dg/torture/fp-int-convert-timode-4.c: Likewise.
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2019-01-23 Uroš Bizjak <ubizjak@gmail.com>
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2019-01-23 Uroš Bizjak <ubizjak@gmail.com>
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PR target/88998
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PR target/88998
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/* Test for correct rounding of conversions from __int128 to
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float. */
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/* { dg-do run } */
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/* { dg-require-effective-target int128 } */
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/* { dg-options "-frounding-math" } */
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#include <fenv.h>
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#include <stdlib.h>
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int
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main (void)
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{
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volatile unsigned long long h = 0x8000000000000000LL;
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volatile unsigned long long l = 0xdLL;
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volatile unsigned __int128 u128 = (((unsigned __int128) h) << 64) | l;
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volatile __int128 s128 = u128;
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fesetround (FE_TONEAREST);
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float fs = s128;
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if (fs != -0x1p+127)
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abort ();
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double ds = s128;
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if (ds != -0x1p+127)
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abort ();
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exit (0);
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}
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/* Test for correct rounding of conversions from __int128 to
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float. */
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/* { dg-do run } */
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/* { dg-require-effective-target int128 } */
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/* { dg-options "-frounding-math" } */
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#include <fenv.h>
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#include <stdlib.h>
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int
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main (void)
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{
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#ifdef FE_DOWNWARD
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volatile unsigned long long h = 0x8000000000000000LL;
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volatile unsigned long long l = 0xdLL;
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volatile unsigned __int128 u128 = (((unsigned __int128) h) << 64) | l;
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volatile __int128 s128 = u128;
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fesetround (FE_DOWNWARD);
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float fs = s128;
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if (fs != -0x1p+127)
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abort ();
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double ds = s128;
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if (ds != -0x1p+127)
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abort ();
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#endif
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exit (0);
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}
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/* Test for correct rounding of conversions from __int128 to
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float. */
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/* { dg-do run } */
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/* { dg-require-effective-target int128 } */
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/* { dg-options "-frounding-math" } */
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#include <fenv.h>
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#include <stdlib.h>
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int
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main (void)
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{
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#ifdef FE_UPWARD
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volatile unsigned long long h = 0x8000000000000000LL;
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volatile unsigned long long l = 0xdLL;
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volatile unsigned __int128 u128 = (((unsigned __int128) h) << 64) | l;
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volatile __int128 s128 = u128;
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fesetround (FE_UPWARD);
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float fs = s128;
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if (fs != -0x1.fffffep+126)
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abort ();
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double ds = s128;
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if (ds != -0x1.fffffffffffffp+126)
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abort ();
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#endif
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exit (0);
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}
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/* Test for correct rounding of conversions from __int128 to
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float. */
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/* { dg-do run } */
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/* { dg-require-effective-target int128 } */
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/* { dg-options "-frounding-math" } */
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#include <fenv.h>
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#include <stdlib.h>
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int
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main (void)
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{
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#ifdef FE_TOWARDZERO
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volatile unsigned long long h = 0x8000000000000000LL;
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volatile unsigned long long l = 0xdLL;
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volatile unsigned __int128 u128 = (((unsigned __int128) h) << 64) | l;
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volatile __int128 s128 = u128;
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fesetround (FE_TOWARDZERO);
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float fs = s128;
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if (fs != -0x1.fffffep+126)
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abort ();
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double ds = s128;
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if (ds != -0x1.fffffffffffffp+126)
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abort ();
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#endif
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exit (0);
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}
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@ -1,3 +1,9 @@
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2019-01-23 Joseph Myers <joseph@codesourcery.com>
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PR libgcc/88931
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* libgcc2.c (FSTYPE FUNC (DWtype u)): Correct no leading bits
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case.
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2019-01-18 Martin Liska <mliska@suse.cz>
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2019-01-18 Martin Liska <mliska@suse.cz>
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* libgcov-profiler.c (__gcov_indirect_call_profiler_v2): Rename
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* libgcov-profiler.c (__gcov_indirect_call_profiler_v2): Rename
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@ -1684,7 +1684,7 @@ FUNC (DWtype u)
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/* No leading bits means u == minimum. */
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/* No leading bits means u == minimum. */
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if (count == 0)
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if (count == 0)
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return -(Wtype_MAXp1_F * (Wtype_MAXp1_F / 2));
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return Wtype_MAXp1_F * (FSTYPE) (hi | ((UWtype) u != 0));
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shift = 1 + W_TYPE_SIZE - count;
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shift = 1 + W_TYPE_SIZE - count;
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