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author | Joseph Myers <joseph@codesourcery.com> | 2016-08-22 19:03:59 +0100 |
---|---|---|
committer | Joseph Myers <jsm28@gcc.gnu.org> | 2016-08-22 19:03:59 +0100 |
commit | 72f52f3081af48ddddcb9e541c33fbbddfb4215d (patch) | |
tree | 92790e144d0acb87113da7350151c0896d7f9232 /gcc/testsuite/gcc.dg | |
parent | 27abac26489e547861904edf53ce1f9d3358a20d (diff) | |
download | gcc-72f52f3081af48ddddcb9e541c33fbbddfb4215d.zip gcc-72f52f3081af48ddddcb9e541c33fbbddfb4215d.tar.gz gcc-72f52f3081af48ddddcb9e541c33fbbddfb4215d.tar.bz2 |
Support __builtin_isinf_sign for new floating-point types (PR middle-end/77269).
The __builtin_isinf_sign folding uses a type-specific signbit built-in
function, meaning it only works for the types float, double and long
double, not for types such as _FloatN, _FloatNx, __float128. Since
the signbit built-in function is now type-generic, that can be used
unconditionally, much as the code uses the type-generic isinf built-in
function unconditionally, and this patch makes it do so, thereby
enabling __builtin_isinf_sign (which glibc uses to expand the isinf
macro since that macro in glibc traditionally provided the stronger
guarantees about the return value given by __builtin_isinf_sign) to
work for all floating-point types.
The test gcc.dg/torture/builtin-isinf_sign-1.c needs updating because
it tests that comparisons of calls to __builtin_isinf_sign to
conditional expressions involving __builtin_isinf and
__builtin_signbit* get optimized away, and with a change of what
particular built-in function for signbit is used, GCC doesn't notice
the expressions with type-generic and non-type-generic built-in
functions are equivalent at -O0 or -O1 (it does optimize away the
original test at -O2).
Bootstrapped with no regressions on x86_64-pc-linux-gnu.
PR middle-end/77269
gcc:
* builtins.c (fold_builtin_classify): Use builtin_decl_explicit
(BUILT_IN_SIGNBIT) to expand __builtin_isinf_sign.
gcc/testsuite:
* gcc.dg/torture/builtin-isinf_sign-1.c: Use __builtin_signbit not
__builtin_signbitf and __builtin_signbitl in expected generic
expansion.
* gcc.dg/torture/float128-tg-2.c, gcc.dg/torture/float128x-tg-2.c,
gcc.dg/torture/float16-tg-2.c, gcc.dg/torture/float32-tg-2.c,
gcc.dg/torture/float32x-tg-2.c, gcc.dg/torture/float64-tg-2.c,
gcc.dg/torture/float64x-tg-2.c, gcc.dg/torture/floatn-tg-2.h: New
tests.
From-SVN: r239665
Diffstat (limited to 'gcc/testsuite/gcc.dg')
-rw-r--r-- | gcc/testsuite/gcc.dg/torture/builtin-isinf_sign-1.c | 4 | ||||
-rw-r--r-- | gcc/testsuite/gcc.dg/torture/float128-tg-2.c | 9 | ||||
-rw-r--r-- | gcc/testsuite/gcc.dg/torture/float128x-tg-2.c | 9 | ||||
-rw-r--r-- | gcc/testsuite/gcc.dg/torture/float16-tg-2.c | 9 | ||||
-rw-r--r-- | gcc/testsuite/gcc.dg/torture/float32-tg-2.c | 9 | ||||
-rw-r--r-- | gcc/testsuite/gcc.dg/torture/float32x-tg-2.c | 9 | ||||
-rw-r--r-- | gcc/testsuite/gcc.dg/torture/float64-tg-2.c | 9 | ||||
-rw-r--r-- | gcc/testsuite/gcc.dg/torture/float64x-tg-2.c | 9 | ||||
-rw-r--r-- | gcc/testsuite/gcc.dg/torture/floatn-tg-2.h | 54 |
9 files changed, 119 insertions, 2 deletions
diff --git a/gcc/testsuite/gcc.dg/torture/builtin-isinf_sign-1.c b/gcc/testsuite/gcc.dg/torture/builtin-isinf_sign-1.c index adfffcd..2579c68 100644 --- a/gcc/testsuite/gcc.dg/torture/builtin-isinf_sign-1.c +++ b/gcc/testsuite/gcc.dg/torture/builtin-isinf_sign-1.c @@ -15,13 +15,13 @@ foo (float f, double d, long double ld) /* Test the generic expansion of isinf_sign. */ if (__builtin_isinf_sign(f) - != (__builtin_isinf(f) ? (__builtin_signbitf(f) ? -1 : 1) : 0)) + != (__builtin_isinf(f) ? (__builtin_signbit(f) ? -1 : 1) : 0)) link_error (__LINE__); if (__builtin_isinf_sign(d) != (__builtin_isinf(d) ? (__builtin_signbit(d) ? -1 : 1) : 0)) link_error (__LINE__); if (__builtin_isinf_sign(ld) - != (__builtin_isinf(ld) ? (__builtin_signbitl(ld) ? -1 : 1) : 0)) + != (__builtin_isinf(ld) ? (__builtin_signbit(ld) ? -1 : 1) : 0)) link_error (__LINE__); #ifdef __OPTIMIZE__ diff --git a/gcc/testsuite/gcc.dg/torture/float128-tg-2.c b/gcc/testsuite/gcc.dg/torture/float128-tg-2.c new file mode 100644 index 0000000..c7a32b1 --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/float128-tg-2.c @@ -0,0 +1,9 @@ +/* Test _Float128 type-generic built-in functions: __builtin_isinf_sign. */ +/* { dg-do run } */ +/* { dg-options "" } */ +/* { dg-add-options float128 } */ +/* { dg-require-effective-target float128_runtime } */ + +#define WIDTH 128 +#define EXT 0 +#include "floatn-tg-2.h" diff --git a/gcc/testsuite/gcc.dg/torture/float128x-tg-2.c b/gcc/testsuite/gcc.dg/torture/float128x-tg-2.c new file mode 100644 index 0000000..e5c1b0c --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/float128x-tg-2.c @@ -0,0 +1,9 @@ +/* Test _Float128x type-generic built-in functions: __builtin_isinf_sign. */ +/* { dg-do run } */ +/* { dg-options "" } */ +/* { dg-add-options float128x } */ +/* { dg-require-effective-target float128x_runtime } */ + +#define WIDTH 128 +#define EXT 1 +#include "floatn-tg-2.h" diff --git a/gcc/testsuite/gcc.dg/torture/float16-tg-2.c b/gcc/testsuite/gcc.dg/torture/float16-tg-2.c new file mode 100644 index 0000000..4236018 --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/float16-tg-2.c @@ -0,0 +1,9 @@ +/* Test _Float16 type-generic built-in functions: __builtin_isinf_sign. */ +/* { dg-do run } */ +/* { dg-options "" } */ +/* { dg-add-options float16 } */ +/* { dg-require-effective-target float16_runtime } */ + +#define WIDTH 16 +#define EXT 0 +#include "floatn-tg-2.h" diff --git a/gcc/testsuite/gcc.dg/torture/float32-tg-2.c b/gcc/testsuite/gcc.dg/torture/float32-tg-2.c new file mode 100644 index 0000000..80441d7 --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/float32-tg-2.c @@ -0,0 +1,9 @@ +/* Test _Float32 type-generic built-in functions: __builtin_isinf_sign. */ +/* { dg-do run } */ +/* { dg-options "" } */ +/* { dg-add-options float32 } */ +/* { dg-require-effective-target float32_runtime } */ + +#define WIDTH 32 +#define EXT 0 +#include "floatn-tg-2.h" diff --git a/gcc/testsuite/gcc.dg/torture/float32x-tg-2.c b/gcc/testsuite/gcc.dg/torture/float32x-tg-2.c new file mode 100644 index 0000000..897130a --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/float32x-tg-2.c @@ -0,0 +1,9 @@ +/* Test _Float32x type-generic built-in functions: __builtin_isinf_sign. */ +/* { dg-do run } */ +/* { dg-options "" } */ +/* { dg-add-options float32x } */ +/* { dg-require-effective-target float32x_runtime } */ + +#define WIDTH 32 +#define EXT 1 +#include "floatn-tg-2.h" diff --git a/gcc/testsuite/gcc.dg/torture/float64-tg-2.c b/gcc/testsuite/gcc.dg/torture/float64-tg-2.c new file mode 100644 index 0000000..dddaa82 --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/float64-tg-2.c @@ -0,0 +1,9 @@ +/* Test _Float64 type-generic built-in functions: __builtin_isinf_sign. */ +/* { dg-do run } */ +/* { dg-options "" } */ +/* { dg-add-options float64 } */ +/* { dg-require-effective-target float64_runtime } */ + +#define WIDTH 64 +#define EXT 0 +#include "floatn-tg-2.h" diff --git a/gcc/testsuite/gcc.dg/torture/float64x-tg-2.c b/gcc/testsuite/gcc.dg/torture/float64x-tg-2.c new file mode 100644 index 0000000..647d104 --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/float64x-tg-2.c @@ -0,0 +1,9 @@ +/* Test _Float64x type-generic built-in functions: __builtin_isinf_sign. */ +/* { dg-do run } */ +/* { dg-options "" } */ +/* { dg-add-options float64x } */ +/* { dg-require-effective-target float64x_runtime } */ + +#define WIDTH 64 +#define EXT 1 +#include "floatn-tg-2.h" diff --git a/gcc/testsuite/gcc.dg/torture/floatn-tg-2.h b/gcc/testsuite/gcc.dg/torture/floatn-tg-2.h new file mode 100644 index 0000000..1060da6 --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/floatn-tg-2.h @@ -0,0 +1,54 @@ +/* Tests for _FloatN / _FloatNx types: compile and execution tests for + type-generic built-in functions: __builtin_isinf_sign. Before + including this file, define WIDTH as the value N; define EXT to 1 + for _FloatNx and 0 for _FloatN. */ + +#define __STDC_WANT_IEC_60559_TYPES_EXT__ +#include <float.h> + +#define CONCATX(X, Y) X ## Y +#define CONCAT(X, Y) CONCATX (X, Y) +#define CONCAT3(X, Y, Z) CONCAT (CONCAT (X, Y), Z) +#define CONCAT4(W, X, Y, Z) CONCAT (CONCAT (CONCAT (W, X), Y), Z) + +#if EXT +# define TYPE CONCAT3 (_Float, WIDTH, x) +# define CST(C) CONCAT4 (C, f, WIDTH, x) +# define MAX CONCAT3 (FLT, WIDTH, X_MAX) +#else +# define TYPE CONCAT (_Float, WIDTH) +# define CST(C) CONCAT3 (C, f, WIDTH) +# define MAX CONCAT3 (FLT, WIDTH, _MAX) +#endif + +extern void exit (int); +extern void abort (void); + +volatile TYPE inf = __builtin_inf (), nanval = __builtin_nan (""); +volatile TYPE neginf = -__builtin_inf (), negnanval = -__builtin_nan (""); +volatile TYPE zero = CST (0.0), negzero = -CST (0.0), one = CST (1.0); +volatile TYPE max = MAX, negmax = -MAX; + +int +main (void) +{ + if (__builtin_isinf_sign (inf) != 1) + abort (); + if (__builtin_isinf_sign (neginf) != -1) + abort (); + if (__builtin_isinf_sign (nanval) != 0) + abort (); + if (__builtin_isinf_sign (negnanval) != 0) + abort (); + if (__builtin_isinf_sign (zero) != 0) + abort (); + if (__builtin_isinf_sign (negzero) != 0) + abort (); + if (__builtin_isinf_sign (one) != 0) + abort (); + if (__builtin_isinf_sign (max) != 0) + abort (); + if (__builtin_isinf_sign (negmax) != 0) + abort (); + exit (0); +} |