From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/testsuite/gcc.target/i386/brokensqrt.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 gcc/testsuite/gcc.target/i386/brokensqrt.c (limited to 'gcc/testsuite/gcc.target/i386/brokensqrt.c') diff --git a/gcc/testsuite/gcc.target/i386/brokensqrt.c b/gcc/testsuite/gcc.target/i386/brokensqrt.c new file mode 100644 index 000000000..836d3b37d --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/brokensqrt.c @@ -0,0 +1,30 @@ +/* { dg-do run } */ +/* { dg-options "-O2 -ffast-math -msse -mfpmath=sse -mrecip" } */ +/* { dg-require-effective-target sse } */ +#include "sse-check.h" + +extern float sqrtf (float); +float __attribute__((noinline)) broken (float a, float b) +{ + return sqrtf (a / b); +} + +extern void abort (void); +extern void *memcpy (void *, const void *, __SIZE_TYPE__); +static void +sse_test (void) +{ + int i; + float x; + char buf[sizeof (float)]; + x = broken (0.0f, 10000.0f); + /* A convoluted way to check for the correct result (zero) for all + floating point formats. + We can't use ==, !=, or range checks, or isinf/isnan/isunordered, + because all of these will not do the right thing under -ffast-math, + as they can assume that neither nan nor inf are returned. */ + memcpy (&buf, &x, sizeof (float)); + for (i = 0; i < sizeof (float); i++) + if (buf[i] != 0) + abort (); +} -- cgit v1.2.3