Merge remote-tracking branch 'upstream/master'

Improve igloo2 example

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Update igloo2 example to Libero v12.0

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Merge pull request #848 from YosysHQ/clifford/fix763

Fix error for wire decl in always block, fixes 763

Merge pull request #849 from YosysHQ/clifford/dynports

Only run derive on blackbox modules when ports have dynamic size

Only run derive on blackbox modules when ports have dynamic size

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Fix error for wire decl in always block, fixes #763

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Fix $global_clock handling vs autowire

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Merge pull request #847 from YosysHQ/clifford/fix785

Fix $readmem[hb] for mem2reg memories, fixes #785

Fix $readmem[hb] for mem2reg memories, fixes #785

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Merge pull request #843 from YosysHQ/clifford/mem2regconstidx

Use mem2reg on memories that only have constant-index write ports

Merge pull request #845 from YosysHQ/clifford/travisnomacos

Disable macOS builds in Travis

Disable macOS builds in Travis

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Try again for passes/pmgen/ice40_dsp_pm.h rule

Tested on both in-tree and out-of-tree builds

Minor improvements in README

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Use mem2reg on memories that only have constant-index write ports

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Fix "write_edif -gndvccy"

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Merge pull request #841 from mmicko/master

Fix ECP5 cells_sim for iverilog

Merge remote-tracking branch 'upstream/master'

Fix ECP5 cells_sim for iverilog

Improve "read" error msg

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Merge pull request #836 from elmsfu/ice40_2bit_ram_rw_mode

ice40: use 2 bits for READ/WRITE MODE for SB_RAM map

Hotfix for "make test"

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Merge pull request #837 from YosysHQ/clifford/fix835

Fix multiple issues in wreduce FF handling, fixes #835

Fix multiple issues in wreduce FF handling, fixes #835

Signed-off-by: Clifford Wolf <clifford@clifford.at>

ice40: use 2 bits for READ/WRITE MODE for SB_RAM map

EBLIF output .param will only use necessary 2 bits

Signed-off-by: Elms <elms@freshred.net>

Merge pull request #834 from YosysHQ/clifford/siminit

Add "write_verilog -siminit"

Add "write_verilog -siminit"

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Reduce amount of trailing whitespace in code base

Fix pmgen for in-tree builds

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Merge pull request #794 from daveshah1/ecp5improve

ECP5 Improvements

Merge pull request #827 from ucb-bar/firrtlfixes

Fix FIRRTL to Verilog process instance subfield assignment.

Fix pmgen for out-of-tree build

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Merge pull request #833 from YosysHQ/clifford/fix831

Fix smt2 code generation for partially initialized memory words, fixe…

Fix smt2 code generation for partially initialized memowy words, fixes #831

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Merge pull request #832 from YosysHQ/supercover

Add "supercover" pass

Improvements in "supercover" pass

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Add "supercover" skeleton

Signed-off-by: Clifford Wolf <clifford@clifford.at>

techlibs/greenpak4/cells_map.v: Harmonize whitespace within lut module

Clean up some whitepsace outliers

Fix FIRRTL to Verilog process instance subfield assignment.
Don't emit subfield assignments: bits(x, y, z) <= ... - but instead, add them to the reverse-wire-map where they'll be treated at the end of the module.
Enable tests which were disabled due to incorrect treatment of subfields.
Assume the `$firrtl2verilog` variable contains any additional switches to control verilog generation (i.e. `--no-dedup -X mverilog`)

Merge remote-tracking branch 'upstream/master'

ecp5: Compatibility with Migen AsyncResetSynchronizer

Signed-off-by: David Shah <davey1576@gmail.com>

Minor changes ontop of 71bcc4c: Remove hierarchy warning that is redundant to -check

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Merge pull request #812 from ucb-bar/arrayhierarchyfixes

Define basic_cell_type() function and use it to derive the cell type …

Cleanups in ARST handling in wreduce

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Merge pull request #824 from litghost/fix_reduce_on_ff

Fix WREDUCE on FF not fixing ARST_VALUE parameter.

Fix handling of defparam for when default_nettype is none

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Check if Verific was built with DB_PRESERVE_INITIAL_VALUE

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Address requested changes - don't require non-$ name.
Suppress warning if name does begin with a `$`.
Fix hierachy tests so they have something to grep.
Announce hierarchy test types.

Fix WREDUCE on FF not fixing ARST_VALUE parameter.

Adds test case that fails without code change.

Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>

Merge pull request #819 from YosysHQ/clifford/optd

Rename "yosys -D" to "yosys -U", add "yosys -D" with expected behavior

Merge pull request #820 from YosysHQ/clifford/fix810

Fix #810 and fix #814

Merge pull request #740 from daveshah1/improve_dress

Improve ABC netname preservation

Fix Travis

It looks like that whole "Fixing Travis's git clone" code was just
there to make the "git describe --tags" work. I simply removed both.

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Hotfix for 4c82ddf

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Merge pull request #822 from litghost/expand_setundef

Add -params mode to force undef parameters in selected cells.

Add -params mode to force undef parameters in selected cells.

Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>

Merge pull request #818 from YosysHQ/clifford/dffsrfix

Fix opt_rmdff handling of $_DFFSR_???_ and $_DLATCHSR_???_, fixes #816

Merge pull request #786 from YosysHQ/pmgen

Pattern Matcher Generator and iCE40 DSP Mapper

Fix typo in passes/pmgen/README.md

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Merge pull request #821 from eddiehung/dff_init

Revert "Add -B option to autotest.sh to append to backend_opts"

Fixes related to handling of autowires and upto-ranges, fixes #814

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Revert "Add -B option to autotest.sh to append to backend_opts"

This reverts commit 281f2aadcab01465f83a3f3a697eec42503e9f8b.

Fix handling of expression width in $past, fixes #810

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Fix segfault in printing of some internal error messages

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Rename "yosys -U" to "yosys -P" to avoid confusion about "undefine"

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Rename "yosys -D" to "yosys -U", add "yosys -D" with expected behavior

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Fix opt_rmdff handling of $_DFFSR_???_ and $_DLATCHSR_???_, fixes #816

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Bugfix in ice40_dsp

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Merge pull request #817 from eddiehung/dff_init

Cleanup #805

Remove simple_defparam tests

Add ice40 test_dsp_map test case generator

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Add "synth_ice40 -dsp"

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Add FF support to wreduce

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Improve iCE40 SB_MAC16 model

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Detect and reject cases that do not map well to iCE40 DSPs (yet)

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Fix normal (non-array) hierarchy -auto-top.
Add simple test.

Merge pull request #805 from eddiehung/dff_init

write_verilog to write initial statement for initial flop state

ecp5: Add DDRDLLA

Signed-off-by: David Shah <davey1576@gmail.com>

ecp5: Add DELAYF/DELAYG blackboxes

Signed-off-by: David Shah <davey1576@gmail.com>

Add first draft of functional SB_MAC16 model

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Instead of INIT param on cells, use initial statement with hier ref as
per @cliffordwolf

Revert "Add INIT parameter to all ff/latch cells"

This reverts commit 742b4e01b498ae2e735d40565f43607d69a015d8.

Merge https://github.com/YosysHQ/yosys into dff_init

Add actual DSP inference to ice40_dsp pass

Signed-off-by: Clifford Wolf <clifford@clifford.at>

Merge branch 'master' of github.com:YosysHQ/yosys into pmgen

Merge pull request #811 from ucb-bar/firrtlfixes

Update cells supported for verilog to FIRRTL conversion.

Removed unused variables, functions.

Append (instead of over-writing) EXTRA_FLAGS

Define basic_cell_type() function and use it to derive the cell type for array references (instead of duplicating the code).

Update cells supported for verilog to FIRRTL conversion.
Issue warning messages for missing parameterized modules and attempts to set initial values.
Replace simple "if (cell-type)" with "else if" chain.
Fix FIRRTL shift handling.
Add support for parameterized modules, $shift, $shiftx.
Handle default output file.
Deal with no top module.
Automatically run pmuxtree pass.
Allow EXTRA_FLAGS and SEED parameters to be set in the environment for tests/tools/autotest.mk.
Support FIRRTL regression testing in tests/tools/autotest.sh
Add xfirrtl files to test directories to exclude files from FIRRTL regression tests that are known to fail.

Merge remote-tracking branch 'upstream/master'

Fix sign handling of real constants

Signed-off-by: Clifford Wolf <clifford@clifford.at>

ecp5: Add ECLKSYNCB blackbox

Signed-off-by: David Shah <dave@ds0.me>

Merge pull request #802 from whitequark/write_verilog_async_mem_ports

write_verilog: correctly emit asynchronous transparent ports

Merge pull request #806 from daveshah1/fsm_opt_no_reset

fsm_opt: Fix runtime error for FSMs without a reset state

ecp5: Full set of IO-related blackboxes

Signed-off-by: David Shah <dave@ds0.me>

Merge remote-tracking branch 'upstream/master'

fsm_opt: Fix runtime error for FSMs without a reset state

Signed-off-by: David Shah <dave@ds0.me>