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Dyalog APL: Difference between revisions
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→Instruction set usage: 18.0 portions don't apply to 18.2
m (Reverted edits by Adám Brudzewsky (talk) to last revision by Marshall) Tag: Rollback |
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* Since [[Dyalog APL versions#14.0|14.0]], [[wikipedia:SSE4.2|SSE4.2]] CRC32 is used to compute fast hash functions. | * Since [[Dyalog APL versions#14.0|14.0]], [[wikipedia:SSE4.2|SSE4.2]] CRC32 is used to compute fast hash functions. | ||
* Since [[Dyalog APL versions#15.0|15.0]], [[wikipedia:BMI2|BMI2]] is used for Boolean matrix transpose. Since [[Dyalog APL versions#16.0|16.0]], it is used for Boolean [[Compress]] and [[Expand]], and several [[structural function]]s on Boolean arrays. | * Since [[Dyalog APL versions#15.0|15.0]], [[wikipedia:BMI2|BMI2]] is used for Boolean matrix transpose. Since [[Dyalog APL versions#16.0|16.0]], it is used for Boolean [[Compress]] and [[Expand]], and several [[structural function]]s on Boolean arrays. | ||
* | * In [[Dyalog APL versions#18.0|18.0]] only, [[wikipedia:CLMUL instruction set|CLMUL]] is used for [[xor]] [[reduction]]s and [[scan]]s. | ||
* | * In [[Dyalog APL versions#18.0|18.0]] only, [[wikipedia:FMA instruction set|FMA3]] is used to implement [[Divide|division]] by a [[singleton]]. | ||
It also uses the POWER8 [https://www.ibm.com/support/knowledgecenter/SSGH2K_13.1.3/com.ibm.xlc1313.aix.doc/compiler_ref/vec_gbb.html gather-bits-by-bytes] instruction, which is equivalent to transposing an 8x8 bit matrix for [[Boolean]] [[Transpose]] since version 15.0 (expanded in applicability in 16.0) and the fused multiply-add instruction for division like x86 FMA3 in 18.0. | It also uses the POWER8 [https://www.ibm.com/support/knowledgecenter/SSGH2K_13.1.3/com.ibm.xlc1313.aix.doc/compiler_ref/vec_gbb.html gather-bits-by-bytes] instruction, which is equivalent to transposing an 8x8 bit matrix for [[Boolean]] [[Transpose]] since version 15.0 (expanded in applicability in 16.0) and the fused multiply-add instruction for division like x86 FMA3 in 18.0. | ||