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Fixing permute functions.

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This commit is contained in:
Ben Vanik
2013-12-14 06:24:29 -08:00
parent a1f41c656a
commit 21d1e7236b
3 changed files with 20 additions and 18 deletions
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20
src/alloy/backend/ivm/ivm_intcode.cc
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@@ -3071,12 +3071,10 @@ uint32_t IntCode_PERMUTE_V128_BY_INT32(IntCodeState& ics, const IntCode* i) {
const vec128_t& src3 = ics.rf[i->src3_reg].v128;
vec128_t& dest = ics.rf[i->dest_reg].v128;
for (size_t i = 0; i < 4; i++) {
#define SWAP_INLINE(x) (((x) & ~0x3) + (3 - ((x) % 4)))
size_t m = SWAP_INLINE(i);
size_t b = (src1 >> (m * 8)) & 0x3;
dest.i4[m] = b < 4 ?
src2.i4[SWAP_INLINE(b)] :
src3.i4[SWAP_INLINE(b - 4)];
size_t b = (src1 >> ((3 - i) * 8)) & 0x7;
dest.i4[i] = b < 4 ?
src2.i4[b] :
src3.i4[b - 4];
}
return IA_NEXT;
}
@@ -3086,12 +3084,10 @@ uint32_t IntCode_PERMUTE_V128_BY_V128(IntCodeState& ics, const IntCode* i) {
const vec128_t& src3 = ics.rf[i->src3_reg].v128;
vec128_t& dest = ics.rf[i->dest_reg].v128;
for (size_t i = 0; i < 16; i++) {
#define SWAP_INLINE(x) (((x) & ~0x3) + (3 - ((x) % 4)))
size_t m = SWAP_INLINE(i);
size_t b = src1.b16[m] & 0x1F;
dest.b16[m] = b < 16 ?
src2.b16[SWAP_INLINE(b)] :
src3.b16[SWAP_INLINE(b - 16)];
size_t b = src1.b16[i] & 0x1F;
dest.b16[i] = b < 16 ?
src2.b16[b] :
src3.b16[b - 16];
}
return IA_NEXT;
}