Displaying 3 results from an estimated 3 matches for "cmph".
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2014 Jan 24
3
[LLVMdev] RFC: Using hashing for switch statements
...the extra table with a runtime
of O(1).
CHM can be used to hash almost arbitrarily many labels.
CHM produces an ordered minimal perfect hashing function.
Why not CHM?
CHM needs extra table space of 2.09 * n elements; this is larger
compared to Jenkins' method.
CHM (in the implementation of cmph-2.0) is much more complicated than
the code of Jenkins' hashing:
h1 = f1(x) % N;
h2 = f2(x) % N;
if (h1 == h2 && ++h2 >= N) h2 = 0;
h = (Table[h1] + Table[h2]) % n;
By enlarging N to a power of 2 and other tweaking we might replace the 3
modulo operations by shifting or masking at...
2012 Apr 19
0
[LLVMdev] Target Dependent Hexagon Packetizer patch
...(and (i32 IntRegs:$src2), 255)))]>,
>> Requires<[HasV4T]>;
>>
>> +// Following instruction is not being extended as it results into the incorrect
>> +// code for negative numbers.
>> +
>> // Signed half compare(.eq) ri.
>> // Pd=cmph.eq(Rs,#s8)
>> let isCompare = 1 in
>> def CMPhEQri_V4 : MInst<(outs PredRegs:$dst),
>> - (ins IntRegs:$src1, u16Imm:$src2),
>> + (ins IntRegs:$src1, s8Imm:$src2),
>> "$dst = cmph.eq($src1, #$src2)",
>> -...
2009 Jul 23
1
[PATCH server] changes required for fedora rawhide inclusion.
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