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More AVX fixes

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Fix RNG state initialization for 16-wide targets
Fix a number of bugs in reduce_add builtin implementations for AVX.
Fix some tests that had incorrect expected results for the 16-wide
  case.
This commit is contained in:
Matt Pharr
2011-09-06 15:53:11 -07:00
parent c76ef7b174
commit 4f451bd041
8 changed files with 24 additions and 22 deletions
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6
stdlib.ispc
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@@ -2862,6 +2862,12 @@ static inline void seed_rng(reference uniform RNGState state, uniform unsigned i
seed = __seed4(state, 0, seed);
if (programCount == 8)
__seed4(state, 4, seed ^ 0xbeeff00d);
if (programCount == 16) {
__seed4(state, 4, seed ^ 0xbeeff00d);
__seed4(state, 8, ((seed & 0xffff) << 16) | (seed >> 16));
__seed4(state, 12, (((seed & 0xff) << 24) | ((seed & 0xff00) << 8) |
((seed & 0xff0000) >> 8) | (seed & 0xff000000) >> 24));
}
}
static inline void fastmath() {