Z: Implement mTrueCount, mFirstTrue, and mLastTrue opcodes#8112
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ehsankianifar wants to merge 1 commit intoeclipse-omr:masterfrom
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Z: Implement mTrueCount, mFirstTrue, and mLastTrue opcodes#8112ehsankianifar wants to merge 1 commit intoeclipse-omr:masterfrom
ehsankianifar wants to merge 1 commit intoeclipse-omr:masterfrom
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hzongaro
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Feb 6, 2026
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I think this looks good. Just a couple of minor comments.
Add support for the mTrueCount, mFirstTrue, and mLastTrue vector mask operations on IBM Z. mTrueCount computes the number of lanes set to true in a mask. mFirstTrue returns the index of the first true lane. mLastTrue returns the index of the last true lane. These opcode implementations enable efficient mask-reduction behavior on the IBM Z backend. signed-off-by: Ehsan Kiani Far <ehsan.kianifar@gmail.com>
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Add support for the mTrueCount, mFirstTrue, and mLastTrue vector mask operations on IBM Z.
mTrueCount computes the number of lanes set to true in a mask.
mFirstTrue returns the index of the first true lane.
mLastTrue returns the index of the last true lane. These opcode implementations enable efficient mask-reduction behaviour on the IBM Z backend.