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Arith tree - parallel prefix.

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nella 2026-05-20 14:10:08 +02:00
parent 536a117ede
commit b17792c451
8 changed files with 150 additions and 89 deletions
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4
passes/techmap/arith_tree.cc
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@ -479,10 +479,6 @@ struct ArithTreePass : public Pass {
log("\n");
log(" -final <auto|ripple|prefix|elarith>\n");
log(" Selects the architecture used for the final two-vector add.\n");
log(" 'auto' (default) emits a ripple-style $add for narrow widths\n");
log(" (< 16 bits) and a parallel prefix hinted $add for wider ones.\n");
log(" 'elarith' emits an \\AddCfast black-box from the ELArith\n");
log(" library; the surrounding flow must provide that module.\n");
log("\n");
log(" -no-fma\n");
log(" Disable fused multiply-add expansion in $macc cells\n");