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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.dg/tree-ssa/pr31966.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.dg/tree-ssa/pr31966.c')
-rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pr31966.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pr31966.c b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pr31966.c new file mode 100644 index 000000000..a18f9d041 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pr31966.c @@ -0,0 +1,50 @@ +/* Contributed by Jack Lloyd <lloyd@randombit.net> */ + +/* { dg-options "-O2 -ftree-vectorize" } */ +/* { dg-options "-O2 -ftree-vectorize -march=nocona" { target { i?86-*-* x86_64-*-* } } } */ + +typedef unsigned long long word; + +const unsigned int MP_WORD_BITS = 64; +const word MP_WORD_MASK = ~((word)0); +const word MP_WORD_TOP_BIT = (word)1 << (8*sizeof(word) - 1); + +extern void abort (void); + +word do_div(word n1, word n0, word d) +{ + word high = n1 % d, quotient = 0; + unsigned int j; + + for(j = 0; j != MP_WORD_BITS; ++j) + { + word high_top_bit = (high & MP_WORD_TOP_BIT); + + high <<= 1; + high |= (n0 >> (MP_WORD_BITS-1-j)) & 1; + quotient <<= 1; + + if(high_top_bit || high >= d) + { + high -= d; + quotient |= 1; + } + } + + return quotient; +} + +int main() +{ + word result; + + result = do_div(0x0000000000200000ll, + 0x0000000000000000ll, + 0x86E53497CE000000ll); + + + if (result != 0x3CBA83) + abort (); + + return 0; +} |