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author | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
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committer | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
commit | 1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch) | |
tree | c607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/gcc/testsuite/gcc.c-torture/execute/pr31169.c | |
parent | 283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff) | |
download | toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.gz toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.bz2 toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.zip |
Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.c-torture/execute/pr31169.c')
-rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.c-torture/execute/pr31169.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.c-torture/execute/pr31169.c b/gcc-4.9/gcc/testsuite/gcc.c-torture/execute/pr31169.c new file mode 100644 index 000000000..447dd4588 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.c-torture/execute/pr31169.c @@ -0,0 +1,51 @@ +extern void abort(); + +#define HOST_WIDE_INT long +#define HOST_BITS_PER_WIDE_INT (sizeof(long)*8) + +struct tree_type +{ + unsigned int precision : 9; +}; + +int +sign_bit_p (struct tree_type *t, HOST_WIDE_INT val_hi, unsigned HOST_WIDE_INT val_lo) +{ + unsigned HOST_WIDE_INT mask_lo, lo; + HOST_WIDE_INT mask_hi, hi; + int width = t->precision; + + if (width > HOST_BITS_PER_WIDE_INT) + { + hi = (unsigned HOST_WIDE_INT) 1 << (width - HOST_BITS_PER_WIDE_INT - 1); + lo = 0; + + mask_hi = ((unsigned HOST_WIDE_INT) -1 + >> (2 * HOST_BITS_PER_WIDE_INT - width)); + mask_lo = -1; + } + else + { + hi = 0; + lo = (unsigned HOST_WIDE_INT) 1 << (width - 1); + + mask_hi = 0; + mask_lo = ((unsigned HOST_WIDE_INT) -1 + >> (HOST_BITS_PER_WIDE_INT - width)); + } + + if ((val_hi & mask_hi) == hi + && (val_lo & mask_lo) == lo) + return 1; + + return 0; +} + +int main() +{ + struct tree_type t; + t.precision = 1; + if (!sign_bit_p (&t, 0, -1)) + abort (); + return 0; +} |