bump fork for version 0.44

.gitcommit

@@ -1 +1 @@
-$Format:%h$
+$Format:%H$

.github/actions/setup-build-env/action.yml

@@ -14,7 +14,7 @@ runs:
       if: runner.os == 'macOS'
       shell: bash
       run: |
-        HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK=1 brew install bison flex gawk libffi pkg-config bash autoconf
+        HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK=1 brew install bison flex gawk libffi pkg-config bash autoconf llvm
 
     - name: Linux runtime environment
       if: runner.os == 'Linux'
@@ -28,6 +28,7 @@ runs:
       shell: bash
       run: |
         echo "${{ github.workspace }}/.local/bin" >> $GITHUB_PATH
+        echo "$(brew --prefix llvm)/bin" >> $GITHUB_PATH
         echo "$(brew --prefix bison)/bin" >> $GITHUB_PATH
         echo "$(brew --prefix flex)/bin" >> $GITHUB_PATH
         echo "procs=$(sysctl -n hw.ncpu)" >> $GITHUB_ENV

.github/workflows/test-build.yml

@@ -56,7 +56,7 @@ jobs:
           mkdir build
           cd build
           make -f ../Makefile config-$CC
-          make -f ../Makefile -j$procs
+          make -f ../Makefile -j$procs ENABLE_LTO=1
 
       - name: Log yosys-config output
         run: |

.github/workflows/test-verific.yml

@@ -41,7 +41,7 @@ jobs:
           echo "ENABLE_VERIFIC_LIBERTY := 1" >> Makefile.conf
           echo "ENABLE_VERIFIC_YOSYSHQ_EXTENSIONS := 1" >> Makefile.conf
           echo "ENABLE_CCACHE := 1" >> Makefile.conf
-          make -j${{ env.procs }}
+          make -j${{ env.procs }} ENABLE_LTO=1
 
       - name: Install Yosys
         run: |

Brewfile

@@ -9,4 +9,5 @@ brew "python3"
 brew "tcl-tk"
 brew "xdot"
 brew "bash"
-brew 'boost-python3'
+brew "boost-python3"
+brew "llvm"

CHANGELOG

@@ -2,9 +2,25 @@
 List of major changes and improvements between releases
 =======================================================
 
-Yosys 0.43 .. Yosys 0.44-dev
+Yosys 0.44 .. Yosys 0.45-dev
 --------------------------
 
+Yosys 0.43 .. Yosys 0.44
+--------------------------
+ * Various
+    - Added ENABLE_LTO compile option to enable link time
+      optimizations.
+    - Build support for Haiku OS.
+
+ * New commands and options
+    - Added "keep_hierarchy" pass to add attribute with 
+      same name to modules based on cost.
+    - Added options "-noopt","-bloat" and "-check_cost" to
+      "test_cell" pass. 
+
+ * New back-ends
+    - Added initial PolarFire support. ( synth_microchip )
+
 Yosys 0.42 .. Yosys 0.43
 --------------------------
  * Various

Dockerfile

@@ -8,6 +8,7 @@ RUN apt-get update -qq \
  && DEBIAN_FRONTEND=noninteractive apt-get -y install --no-install-recommends \
     ca-certificates \
     clang \
+    lld \
     curl \
     libffi-dev \
     libreadline-dev \

Makefile

@@ -34,7 +34,7 @@ ENABLE_PYOSYS := 0
 ENABLE_GCOV := 0
 ENABLE_GPROF := 0
 ENABLE_DEBUG := 0
-ENABLE_NDEBUG := 0
+ENABLE_LTO := 0
 ENABLE_CCACHE := 0
 # sccache is not always a drop-in replacement for ccache in practice
 ENABLE_SCCACHE := 0
@@ -53,6 +53,11 @@ SANITIZER =
 # SANITIZER = undefined
 # SANITIZER = cfi
 
+# Prefer using ENABLE_DEBUG over setting these
+OPT_LEVEL := -O3
+GCC_LTO :=
+CLANG_LTO := -flto=thin
+
 PROGRAM_PREFIX :=
 
 OS := $(shell uname -s)
@@ -143,14 +148,19 @@ LIBS += -lrt
 endif
 endif
 
-YOSYS_VER := 0.43+0
+ifeq ($(OS), Haiku)
+# Allow usage of non-posix vasprintf, mkstemps functions
+CXXFLAGS += -D_DEFAULT_SOURCE
+endif
+
+YOSYS_VER := 0.44+0
 
 # Note: We arrange for .gitcommit to contain the (short) commit hash in
 # tarballs generated with git-archive(1) using .gitattributes. The git repo
 # will have this file in its unexpanded form tough, in which case we fall
 # back to calling git directly.
 TARBALL_GIT_REV := $(shell cat $(YOSYS_SRC)/.gitcommit)
-ifeq ($(TARBALL_GIT_REV),$$Format:%h$$)
+ifneq ($(findstring Format:,$(TARBALL_GIT_REV)),)
 GIT_REV := $(shell GIT_DIR=$(YOSYS_SRC)/.git git rev-parse --short=9 HEAD || echo UNKNOWN)
 else
 GIT_REV := $(TARBALL_GIT_REV)
@@ -159,7 +169,7 @@ endif
 OBJS = kernel/version_$(GIT_REV).o
 
 bumpversion:
-	sed -i "/^YOSYS_VER := / s/+[0-9][0-9]*$$/+`git log --oneline ead4718.. | wc -l`/;" Makefile
+	sed -i "/^YOSYS_VER := / s/+[0-9][0-9]*$$/+`git log --oneline 80ba43d.. | wc -l`/;" Makefile
 
 ABCMKARGS = CC="$(CXX)" CXX="$(CXX)" ABC_USE_LIBSTDCXX=1 ABC_USE_NAMESPACE=abc VERBOSE=$(Q)
 
@@ -207,10 +217,17 @@ ifeq ($(OS), OpenBSD)
 ABC_ARCHFLAGS += "-DABC_NO_RLIMIT"
 endif
 
+# This gets overridden later.
+LTOFLAGS := $(GCC_LTO)
+
 ifeq ($(CONFIG),clang)
 CXX = clang++
-CXXFLAGS += -std=$(CXXSTD) -Os
+CXXFLAGS += -std=$(CXXSTD) $(OPT_LEVEL)
+ifeq ($(ENABLE_LTO),1)
+LINKFLAGS += -fuse-ld=lld
+endif
 ABCMKARGS += ARCHFLAGS="-DABC_USE_STDINT_H $(ABC_ARCHFLAGS)"
+LTOFLAGS := $(CLANG_LTO)
 
 ifneq ($(SANITIZER),)
 $(info [Clang Sanitizer] $(SANITIZER))
@@ -226,19 +243,20 @@ endif
 ifneq ($(findstring cfi,$(SANITIZER)),)
 CXXFLAGS += -flto
 LINKFLAGS += -flto
+LTOFLAGS =
 endif
 endif
 
 else ifeq ($(CONFIG),gcc)
 CXX = g++
-CXXFLAGS += -std=$(CXXSTD) -Os
+CXXFLAGS += -std=$(CXXSTD) $(OPT_LEVEL)
 ABCMKARGS += ARCHFLAGS="-DABC_USE_STDINT_H $(ABC_ARCHFLAGS)"
 
 else ifeq ($(CONFIG),gcc-static)
 LINKFLAGS := $(filter-out -rdynamic,$(LINKFLAGS)) -static
 LIBS := $(filter-out -lrt,$(LIBS))
 CXXFLAGS := $(filter-out -fPIC,$(CXXFLAGS))
-CXXFLAGS += -std=$(CXXSTD) -Os
+CXXFLAGS += -std=$(CXXSTD) $(OPT_LEVEL)
 ABCMKARGS = CC="$(CC)" CXX="$(CXX)" LD="$(CXX)" ABC_USE_LIBSTDCXX=1 LIBS="-lm -lpthread -static" OPTFLAGS="-O" \
                        ARCHFLAGS="-DABC_USE_STDINT_H -DABC_NO_DYNAMIC_LINKING=1 -Wno-unused-but-set-variable $(ARCHFLAGS)" ABC_USE_NO_READLINE=1
 ifeq ($(DISABLE_ABC_THREADS),1)
@@ -247,12 +265,12 @@ endif
 
 else ifeq ($(CONFIG),afl-gcc)
 CXX = AFL_QUIET=1 AFL_HARDEN=1 afl-gcc
-CXXFLAGS += -std=$(CXXSTD) -Os
+CXXFLAGS += -std=$(CXXSTD) $(OPT_LEVEL)
 ABCMKARGS += ARCHFLAGS="-DABC_USE_STDINT_H"
 
 else ifeq ($(CONFIG),cygwin)
 CXX = g++
-CXXFLAGS += -std=gnu++11 -Os
+CXXFLAGS += -std=gnu++11 $(OPT_LEVEL)
 ABCMKARGS += ARCHFLAGS="-DABC_USE_STDINT_H"
 
 else ifeq ($(CONFIG),wasi)
@@ -267,7 +285,7 @@ AR = $(WASI_SDK)/bin/ar
 RANLIB = $(WASI_SDK)/bin/ranlib
 WASIFLAGS := --sysroot $(WASI_SDK)/share/wasi-sysroot $(WASIFLAGS)
 endif
-CXXFLAGS := $(WASIFLAGS) -std=$(CXXSTD) -Os -D_WASI_EMULATED_PROCESS_CLOCKS $(filter-out -fPIC,$(CXXFLAGS))
+CXXFLAGS := $(WASIFLAGS) -std=$(CXXSTD) $(OPT_LEVEL) -D_WASI_EMULATED_PROCESS_CLOCKS $(filter-out -fPIC,$(CXXFLAGS))
 LINKFLAGS := $(WASIFLAGS) -Wl,-z,stack-size=1048576 $(filter-out -rdynamic,$(LINKFLAGS))
 LIBS := -lwasi-emulated-process-clocks $(filter-out -lrt,$(LIBS))
 ABCMKARGS += AR="$(AR)" RANLIB="$(RANLIB)"
@@ -285,7 +303,7 @@ endif
 else ifeq ($(CONFIG),mxe)
 PKG_CONFIG = /usr/local/src/mxe/usr/bin/i686-w64-mingw32.static-pkg-config
 CXX = /usr/local/src/mxe/usr/bin/i686-w64-mingw32.static-g++
-CXXFLAGS += -std=$(CXXSTD) -Os -D_POSIX_SOURCE -DYOSYS_MXE_HACKS -Wno-attributes
+CXXFLAGS += -std=$(CXXSTD) $(OPT_LEVEL) -D_POSIX_SOURCE -DYOSYS_MXE_HACKS -Wno-attributes
 CXXFLAGS := $(filter-out -fPIC,$(CXXFLAGS))
 LINKFLAGS := $(filter-out -rdynamic,$(LINKFLAGS)) -s
 LIBS := $(filter-out -lrt,$(LIBS))
@@ -296,7 +314,7 @@ EXE = .exe
 
 else ifeq ($(CONFIG),msys2-32)
 CXX = i686-w64-mingw32-g++
-CXXFLAGS += -std=$(CXXSTD) -Os -D_POSIX_SOURCE -DYOSYS_WIN32_UNIX_DIR
+CXXFLAGS += -std=$(CXXSTD) $(OPT_LEVEL) -D_POSIX_SOURCE -DYOSYS_WIN32_UNIX_DIR
 CXXFLAGS := $(filter-out -fPIC,$(CXXFLAGS))
 LINKFLAGS := $(filter-out -rdynamic,$(LINKFLAGS)) -s
 LIBS := $(filter-out -lrt,$(LIBS))
@@ -306,7 +324,7 @@ EXE = .exe
 
 else ifeq ($(CONFIG),msys2-64)
 CXX = x86_64-w64-mingw32-g++
-CXXFLAGS += -std=$(CXXSTD) -Os -D_POSIX_SOURCE -DYOSYS_WIN32_UNIX_DIR
+CXXFLAGS += -std=$(CXXSTD) $(OPT_LEVEL) -D_POSIX_SOURCE -DYOSYS_WIN32_UNIX_DIR
 CXXFLAGS := $(filter-out -fPIC,$(CXXFLAGS))
 LINKFLAGS := $(filter-out -rdynamic,$(LINKFLAGS)) -s
 LIBS := $(filter-out -lrt,$(LIBS))
@@ -315,13 +333,20 @@ ABCMKARGS += LIBS="-lpthread -lshlwapi -s" ABC_USE_NO_READLINE=0 CC="x86_64-w64-
 EXE = .exe
 
 else ifeq ($(CONFIG),none)
-CXXFLAGS += -std=$(CXXSTD) -Os
+CXXFLAGS += -std=$(CXXSTD) $(OPT_LEVEL)
 ABCMKARGS += ARCHFLAGS="-DABC_USE_STDINT_H $(ABC_ARCHFLAGS)"
+LTOFLAGS =
 
 else
 $(error Invalid CONFIG setting '$(CONFIG)'. Valid values: clang, gcc, mxe, msys2-32, msys2-64, none)
 endif
 
+
+ifeq ($(ENABLE_LTO),1)
+CXXFLAGS += $(LTOFLAGS)
+LINKFLAGS += $(LTOFLAGS)
+endif
+
 ifeq ($(ENABLE_LIBYOSYS),1)
 TARGETS += libyosys.so
 endif
@@ -436,16 +461,8 @@ CXXFLAGS += -pg
 LINKFLAGS += -pg
 endif
 
-ifeq ($(ENABLE_NDEBUG),1)
-CXXFLAGS := -O3 -DNDEBUG $(filter-out -Os -ggdb,$(CXXFLAGS))
-endif
-
 ifeq ($(ENABLE_DEBUG),1)
-ifeq ($(CONFIG),clang)
-CXXFLAGS := -O0 -DDEBUG $(filter-out -Os,$(CXXFLAGS))
-else
-CXXFLAGS := -Og -DDEBUG $(filter-out -Os,$(CXXFLAGS))
-endif
+CXXFLAGS := -Og -DDEBUG $(filter-out $(OPT_LEVEL),$(CXXFLAGS))
 endif
 
 ifeq ($(ENABLE_ABC),1)
@@ -574,6 +591,7 @@ S =
 endif
 
 $(eval $(call add_include_file,kernel/binding.h))
+$(eval $(call add_include_file,kernel/bitpattern.h))
 $(eval $(call add_include_file,kernel/cellaigs.h))
 $(eval $(call add_include_file,kernel/celledges.h))
 $(eval $(call add_include_file,kernel/celltypes.h))
@@ -619,7 +637,7 @@ $(eval $(call add_include_file,backends/rtlil/rtlil_backend.h))
 
 OBJS += kernel/driver.o kernel/register.o kernel/rtlil.o kernel/log.o kernel/calc.o kernel/yosys.o
 OBJS += kernel/binding.o
-OBJS += kernel/cellaigs.o kernel/celledges.o kernel/satgen.o kernel/scopeinfo.o kernel/qcsat.o kernel/mem.o kernel/ffmerge.o kernel/ff.o kernel/yw.o kernel/json.o kernel/fmt.o
+OBJS += kernel/cellaigs.o kernel/celledges.o kernel/cost.o kernel/satgen.o kernel/scopeinfo.o kernel/qcsat.o kernel/mem.o kernel/ffmerge.o kernel/ff.o kernel/yw.o kernel/json.o kernel/fmt.o
 ifeq ($(ENABLE_ZLIB),1)
 OBJS += kernel/fstdata.o
 endif
@@ -773,10 +791,10 @@ check-git-abc:
 		exit 1; \
 	elif git -C "$(YOSYS_SRC)" submodule status abc 2>/dev/null | grep -q '^ '; then \
 		exit 0; \
-	elif [ -f "$(YOSYS_SRC)/abc/.gitcommit" ] && ! grep -q '\$$Format:%h\$$' "$(YOSYS_SRC)/abc/.gitcommit"; then \
+	elif [ -f "$(YOSYS_SRC)/abc/.gitcommit" ] && ! grep -q '\$$Format:%[hH]\$$' "$(YOSYS_SRC)/abc/.gitcommit"; then \
 		echo "'abc' comes from a tarball. Continuing."; \
 		exit 0; \
-	elif [ -f "$(YOSYS_SRC)/abc/.gitcommit" ] && grep -q '\$$Format:%h\$$' "$(YOSYS_SRC)/abc/.gitcommit"; then \
+	elif [ -f "$(YOSYS_SRC)/abc/.gitcommit" ] && grep -q '\$$Format:%[hH]\$$' "$(YOSYS_SRC)/abc/.gitcommit"; then \
 		echo "Error: 'abc' is not configured as a git submodule."; \
 		echo "To resolve this:"; \
 		echo "1. Back up your changes: Save any modifications from the 'abc' directory to another location."; \
@@ -863,6 +881,7 @@ endif
 	+cd tests/arch/quicklogic/pp3 && bash run-test.sh $(SEEDOPT)
 	+cd tests/arch/quicklogic/qlf_k6n10f && bash run-test.sh $(SEEDOPT)
 	+cd tests/arch/gatemate && bash run-test.sh $(SEEDOPT)
+	+cd tests/arch/microchip && bash run-test.sh $(SEEDOPT)
 	+cd tests/rpc && bash run-test.sh
 	+cd tests/memfile && bash run-test.sh
 	+cd tests/verilog && bash run-test.sh

README.md

@@ -79,7 +79,7 @@ Xdot (graphviz) is used by the ``show`` command in yosys to display schematics.
 For example on Ubuntu Linux 16.04 LTS the following commands will install all
 prerequisites for building yosys:
 
-	$ sudo apt-get install build-essential clang bison flex \
+	$ sudo apt-get install build-essential clang lld bison flex \
 		libreadline-dev gawk tcl-dev libffi-dev git \
 		graphviz xdot pkg-config python3 libboost-system-dev \
 		libboost-python-dev libboost-filesystem-dev zlib1g-dev
@@ -116,6 +116,17 @@ unless `CXX` is assigned in the call to make, e.g.
 
   $ make CXX=$CXX
 
+The Makefile has many variables influencing the build process. These can be
+adjusted by modifying the Makefile.conf file which is created at the
+`make config-...` step (see above), or they can be set by passing an option
+to the make command directly.
+
+For example, if you have clang, and (a compatible version of) `ld.lld`
+available in PATH, it's recommended to speed up incremental builds with
+lld by enabling LTO:
+
+ $ make ENABLE_LTO=1
+
 For other compilers and build configurations it might be
 necessary to make some changes to the config section of the
 Makefile.

docs/source/conf.py

@@ -5,7 +5,7 @@
 project = 'YosysHQ Yosys'
 author = 'YosysHQ GmbH'
 copyright ='2024 YosysHQ GmbH'
-yosys_ver = "0.43"
+yosys_ver = "0.44"
 
 # select HTML theme
 html_theme = 'furo'

docs/source/getting_started/installation.rst

@@ -94,7 +94,7 @@ Installing all prerequisites for Ubuntu 20.04:
 
 .. code:: console
 
-   sudo sudo apt-get install build-essential clang bison flex \
+   sudo sudo apt-get install build-essential clang lld bison flex \
       libreadline-dev gawk tcl-dev libffi-dev git make \
       graphviz xdot pkg-config python3 libboost-system-dev \
       libboost-python-dev libboost-filesystem-dev zlib1g-dev

docs/source/using_yosys/more_scripting/interactive_investigation.rst

@@ -115,7 +115,7 @@ leads us to the third diagram:
 
    Output of the third :cmd:ref:`show` command in :ref:`example_ys`
 
-Here we see that the :cmd:ref:`proc` command not only has removed the artifacts
+Here we see that the :cmd:ref:`opt` command not only has removed the artifacts
 left behind by :cmd:ref:`proc`, but also determined correctly that it can remove
 the first ``$mux`` cell without changing the behavior of the circuit.
 

flake.nix

@@ -18,7 +18,7 @@
         yosys = pkgs.clangStdenv.mkDerivation {
           name = "yosys";
           src = ./. ;
-          buildInputs = with pkgs; [ clang bison flex libffi tcl readline python3 llvmPackages.libcxxClang zlib git pkg-configUpstream ];
+          buildInputs = with pkgs; [ clang bison flex libffi tcl readline python3 llvmPackages.libcxxClang zlib git pkg-configUpstream llvmPackages.bintools ];
           checkInputs = with pkgs; [ gtest ];
           propagatedBuildInputs = [ abc-verifier ];
           preConfigure = "make config-clang";
@@ -41,7 +41,7 @@
         packages.default = yosys;
         defaultPackage = yosys;
         devShell = pkgs.mkShell {
-          buildInputs = with pkgs; [ clang bison flex libffi tcl readline python3 llvmPackages.libcxxClang zlib git gtest abc-verifier ];
+          buildInputs = with pkgs; [ clang llvmPackages.bintools bison flex libffi tcl readline python3 llvmPackages.libcxxClang zlib git gtest abc-verifier ];
         };
       }
     );

frontends/ast/ast.cc

@@ -20,10 +20,10 @@
  *
  *  This is the AST frontend library.
  *
- *  The AST frontend library is not a frontend on it's own but provides a
- *  generic abstract syntax tree (AST) abstraction for HDL code and can be
- *  used by HDL frontends. See "ast.h" for an overview of the API and the
- *  Verilog frontend for an usage example.
+ *  The AST frontend library is not a frontend on its own but provides an
+ *  abstract syntax tree (AST) abstraction for the open source Verilog frontend
+ *  at frontends/verilog.
+ *
  *
  */