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| author | Zack Weinberg <zack@gcc.gnu.org> | 1999-04-13 23:03:09 +0000 |
|---|---|---|
| committer | Zack Weinberg <zack@gcc.gnu.org> | 1999-04-13 23:03:09 +0000 |
| commit | 299d193437fb5a8eb42dd8f202b5912b29b43fb4 (patch) | |
| tree | c5debacfd393dd1a2b0cd5f0d94363592eafe8b8 /gcc/testsuite | |
| parent | b3d2c3b8a35842212a2e327032d9aef95d475567 (diff) | |
| download | gcc-299d193437fb5a8eb42dd8f202b5912b29b43fb4.zip gcc-299d193437fb5a8eb42dd8f202b5912b29b43fb4.tar.gz gcc-299d193437fb5a8eb42dd8f202b5912b29b43fb4.tar.bz2 | |
Regression test for x86 fp-stack breakage
From-SVN: r26430
Diffstat (limited to 'gcc/testsuite')
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/execute/990413-2.c | 50 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/execute/990413-2.x | 3 |
2 files changed, 53 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/execute/990413-2.c b/gcc/testsuite/gcc.c-torture/execute/990413-2.c new file mode 100644 index 0000000..262140a --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/execute/990413-2.c @@ -0,0 +1,50 @@ +/* This tests for a bug in regstack that was breaking glibc's math library. */ + +extern void abort (void); + +static __inline double +minus_zero (void) +{ + union { double __d; int __i[2]; } __x; + __x.__i[0] = 0x0; + __x.__i[1] = 0x80000000; + return __x.__d; +} + +static __inline long double +__atan2l (long double __y, long double __x) +{ + register long double __value; + __asm __volatile__ ("fpatan\n\t" + : "=t" (__value) + : "0" (__x), "u" (__y) + : "st(1)"); + return __value; +} + +static __inline long double +__sqrtl (long double __x) +{ + register long double __result; + __asm __volatile__ ("fsqrt" : "=t" (__result) : "0" (__x)); + return __result; +} + +static __inline double +asin (double __x) +{ + return __atan2l (__x, __sqrtl (1.0 - __x * __x)); +} + +int +main (void) +{ + double x; + + x = minus_zero(); + x = asin (x); + + if (x != 0.0) /* actually -0.0, but 0.0 == -0.0 */ + abort (); + return 0; +} diff --git a/gcc/testsuite/gcc.c-torture/execute/990413-2.x b/gcc/testsuite/gcc.c-torture/execute/990413-2.x new file mode 100644 index 0000000..039cece --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/execute/990413-2.x @@ -0,0 +1,3 @@ +# This test is x86 specific. +if { ! [istarget "i?86-*-*"] } { return 1 } +return 0 |