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base repository: azonenberg/yosys
base: 0c83a30f950d
head repository: azonenberg/yosys
compare: 0d7e71f7abd4
Commits on Jan 15, 2017
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Fix issue YosysHQ#269, optimize signed compare with 0
add opt_compare pass and add it to opt for a < 0: if a is signed, replace with a[max_bit-1] for a >= 0: if a is signed, replace with ~a[max_bit-1]
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passes/hierarchy: delete some dead code
Signed-off-by: Austin Seipp <aseipp@pobox.com>
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Commits on Jan 16, 2017
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Merge pull request YosysHQ#293 from thoughtpolice/minor-cleanup
Delete some dead code in the Hierarchy pass
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Optimize compares to powers of 2
Remove opt_compare and put comparison pass in opt_expr assuming a [7:0] is unsigned a >= (1<<x) becomes |a[7:x] a < (1<<x) becomes !a[7:x] Additionally: a >= 0 becomes constant true, a < 0 becomes constant false delete opt_compare.cc revert opt.cc to commit b7cfb7d (remove opt_compare step)
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Commits on Jan 17, 2017
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Commits on Jan 21, 2017
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Commits on Jan 25, 2017
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Commits on Jan 26, 2017
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Commits on Jan 28, 2017
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Commits on Jan 30, 2017
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Refactor and generalize the comparision optimization
Generalizes the optimization to: a < C, a >= C, C > a, C <= a
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Commits on Jan 31, 2017
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Merge branch 'opt_compare_pr' of https://github.com/C-Elegans/yosys i…
…nto C-Elegans-opt_compare_pr
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Commits on Feb 1, 2017
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Commits on Feb 4, 2017
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Commits on Feb 5, 2017
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Use -E sed parameter instead of -r.
BSD sed equivalent to -r parameter is -E and it is also supported in GNU sed thus using -E results in support on both platforms.
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Merge pull request YosysHQ#304 from esden/gsed-darwin
Use gsed vs sed on Darwin.
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Commits on Feb 6, 2017
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Commits on Feb 8, 2017
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Commits on Feb 9, 2017
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