stv0g
/
yosys
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Renamed opt_share to opt_merge

This commit is contained in:
Clifford Wolf 2016-03-31 08:52:49 +02:00
parent 1d0f0d668a
commit ec93680bd5
8 changed files with 28 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
manual/CHAPTER_Optimize.tex
View File

@ -16,13 +16,13 @@ passes that each perform a simple optimization:
\item Once at the beginning of {\tt opt}:
\begin{itemize}
\item {\tt opt\_expr}
\item {\tt opt\_share -nomux}
\item {\tt opt\_merge -nomux}
\end{itemize}
\item Repeat until result is stable:
\begin{itemize}
\item {\tt opt\_muxtree}
\item {\tt opt\_reduce}
\item {\tt opt\_share}
\item {\tt opt\_merge}
\item {\tt opt\_rmdff}
\item {\tt opt\_clean}
\item {\tt opt\_expr}
@ -130,7 +130,7 @@ This pass identifies unused signals and cells and removes them from the design.
creates an \B{unused\_bits} attribute on wires with unused bits. This attribute can be
used for debugging or by other optimization passes.
\subsection{The opt\_share pass}
\subsection{The opt\_merge pass}
This pass performs trivial resource sharing. This means that this pass identifies cells
with identical inputs and replaces them with a single instance of the cell.

4
manual/CHAPTER_Overview.tex
View File

@ -489,7 +489,7 @@ select.cc}, {\tt show.cc}, \dots) and a couple of other small utility libraries.
This directory contains a subdirectory for each pass or group of passes. For example as
of this writing the directory {\tt passes/opt/} contains the code for seven
passes: {\tt opt}, {\tt opt\_expr}, {\tt opt\_muxtree}, {\tt opt\_reduce},
{\tt opt\_rmdff}, {\tt opt\_rmunused} and {\tt opt\_share}.
{\tt opt\_rmdff}, {\tt opt\_rmunused} and {\tt opt\_merge}.
\item {\tt techlibs/} \\
This directory contains simulation models and standard implementations for the
@ -513,7 +513,7 @@ Yosys. So it is not needed to add additional commands to a central list of comma
\end{sloppypar}
Good starting points for reading example source code to learn how to write passes
are {\tt passes/opt/opt\_rmdff.cc} and {\tt passes/opt/opt\_share.cc}.
are {\tt passes/opt/opt\_rmdff.cc} and {\tt passes/opt/opt\_merge.cc}.
See the top-level README file for a quick {\it Getting Started} guide and build
instructions. The Yosys build is based solely on Makefiles.

4
manual/PRESENTATION_ExSyn.tex
View File

@ -145,12 +145,12 @@ is a macro command that calls other commands:
\begin{lstlisting}[xleftmargin=0.5cm, basicstyle=\ttfamily\fontsize{8pt}{10pt}\selectfont, language=ys]
opt_expr # const folding and simple expression rewriting
opt_share -nomux # merging identical cells
opt_merge -nomux # merging identical cells
do
opt_muxtree # remove never-active branches from multiplexer tree
opt_reduce # consolidate trees of boolean ops to reduce functions
opt_share # merging identical cells
opt_merge # merging identical cells
opt_rmdff # remove/simplify registers with constant inputs
opt_clean # remove unused objects (cells, wires) from design
opt_expr # const folding and simple expression rewriting

2
passes/memory/memory_share.cc
View File

@ -746,7 +746,7 @@ struct MemorySharePass : public Pass {
log("\n");
log("Note that in addition to the algorithms implemented in this pass, the $memrd\n");
log("and $memwr cells are also subject to generic resource sharing passes (and other\n");
log("optimizations) such as opt_share.\n");
log("optimizations) such as \"share\" and \"opt_merge\".\n");
log("\n");
}
virtual void execute(std::vector<std::string> args, RTLIL::Design *design) {

2
passes/opt/Makefile.inc
View File

@ -1,6 +1,6 @@
OBJS += passes/opt/opt.o
OBJS += passes/opt/opt_share.o
OBJS += passes/opt/opt_merge.o
OBJS += passes/opt/opt_muxtree.o
OBJS += passes/opt/opt_reduce.o
OBJS += passes/opt/opt_rmdff.o

16
passes/opt/opt.cc
View File

@ -38,12 +38,12 @@ struct OptPass : public Pass {
log("passes in the following order:\n");
log("\n");
log(" opt_expr [-mux_undef] [-mux_bool] [-undriven] [-clkinv] [-fine] [-full] [-keepdc]\n");
log(" opt_share [-share_all] -nomux\n");
log(" opt_merge [-share_all] -nomux\n");
log("\n");
log(" do\n");
log(" opt_muxtree\n");
log(" opt_reduce [-fine] [-full]\n");
log(" opt_share [-share_all]\n");
log(" opt_merge [-share_all]\n");
log(" opt_rmdff\n");
log(" opt_clean [-purge]\n");
log(" opt_expr [-mux_undef] [-mux_bool] [-undriven] [-clkinv] [-fine] [-full] [-keepdc]\n");
@ -53,7 +53,7 @@ struct OptPass : public Pass {
log("\n");
log(" do\n");
log(" opt_expr [-mux_undef] [-mux_bool] [-undriven] [-clkinv] [-fine] [-full] [-keepdc]\n");
log(" opt_share [-share_all]\n");
log(" opt_merge [-share_all]\n");
log(" opt_rmdff\n");
log(" opt_clean [-purge]\n");
log(" while <changed design in opt_rmdff>\n");
@ -68,7 +68,7 @@ struct OptPass : public Pass {
std::string opt_clean_args;
std::string opt_expr_args;
std::string opt_reduce_args;
std::string opt_share_args;
std::string opt_merge_args;
bool fast_mode = false;
log_header("Executing OPT pass (performing simple optimizations).\n");
@ -111,7 +111,7 @@ struct OptPass : public Pass {
continue;
}
if (args[argidx] == "-share_all") {
opt_share_args += " -share_all";
opt_merge_args += " -share_all";
continue;
}
if (args[argidx] == "-fast") {
@ -126,7 +126,7 @@ struct OptPass : public Pass {
{
while (1) {
Pass::call(design, "opt_expr" + opt_expr_args);
Pass::call(design, "opt_share" + opt_share_args);
Pass::call(design, "opt_merge" + opt_merge_args);
design->scratchpad_unset("opt.did_something");
Pass::call(design, "opt_rmdff");
if (design->scratchpad_get_bool("opt.did_something") == false)
@ -139,12 +139,12 @@ struct OptPass : public Pass {
else
{
Pass::call(design, "opt_expr" + opt_expr_args);
Pass::call(design, "opt_share -nomux" + opt_share_args);
Pass::call(design, "opt_merge -nomux" + opt_merge_args);
while (1) {
design->scratchpad_unset("opt.did_something");
Pass::call(design, "opt_muxtree");
Pass::call(design, "opt_reduce" + opt_reduce_args);
Pass::call(design, "opt_share" + opt_share_args);
Pass::call(design, "opt_merge" + opt_merge_args);
Pass::call(design, "opt_rmdff");
Pass::call(design, "opt_clean" + opt_clean_args);
Pass::call(design, "opt_expr" + opt_expr_args);

18
passes/opt/opt_share.cc → passes/opt/opt_merge.cc
View File

@ -31,7 +31,7 @@
USING_YOSYS_NAMESPACE
PRIVATE_NAMESPACE_BEGIN
struct OptShareWorker
struct OptMergeWorker
{
RTLIL::Design *design;
RTLIL::Module *module;
@ -212,14 +212,14 @@ struct OptShareWorker
}
struct CompareCells {
OptShareWorker *that;
CompareCells(OptShareWorker *that) : that(that) {}
OptMergeWorker *that;
CompareCells(OptMergeWorker *that) : that(that) {}
bool operator()(const RTLIL::Cell *cell1, const RTLIL::Cell *cell2) const {
return that->compare_cells(cell1, cell2);
}
};
OptShareWorker(RTLIL::Design *design, RTLIL::Module *module, bool mode_nomux, bool mode_share_all) :
OptMergeWorker(RTLIL::Design *design, RTLIL::Module *module, bool mode_nomux, bool mode_share_all) :
design(design), module(module), assign_map(module), mode_share_all(mode_share_all)
{
total_count = 0;
@ -286,13 +286,13 @@ struct OptShareWorker
}
};
struct OptSharePass : public Pass {
OptSharePass() : Pass("opt_share", "consolidate identical cells") { }
struct OptMergePass : public Pass {
OptMergePass() : Pass("opt_merge", "consolidate identical cells") { }
virtual void help()
{
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
log("\n");
log(" opt_share [options] [selection]\n");
log(" opt_merge [options] [selection]\n");
log("\n");
log("This pass identifies cells with identical type and input signals. Such cells\n");
log("are then merged to one cell.\n");
@ -328,7 +328,7 @@ struct OptSharePass : public Pass {
int total_count = 0;
for (auto module : design->selected_modules()) {
OptShareWorker worker(design, module, mode_nomux, mode_share_all);
OptMergeWorker worker(design, module, mode_nomux, mode_share_all);
total_count += worker.total_count;
}
@ -336,6 +336,6 @@ struct OptSharePass : public Pass {
design->scratchpad_set_bool("opt.did_something", true);
log("Removed a total of %d cells.\n", total_count);
}
} OptSharePass;
} OptMergePass;
PRIVATE_NAMESPACE_END

4
techlibs/ice40/ice40_opt.cc
View File

@ -128,7 +128,7 @@ struct Ice40OptPass : public Pass {
log(" do\n");
log(" <ice40 specific optimizations>\n");
log(" opt_expr -mux_undef -undriven [-full]\n");
log(" opt_share\n");
log(" opt_merge\n");
log(" opt_rmdff\n");
log(" opt_clean\n");
log(" while <changed design>\n");
@ -159,7 +159,7 @@ struct Ice40OptPass : public Pass {
run_ice40_opts(module);
Pass::call(design, "opt_expr " + opt_expr_args);
Pass::call(design, "opt_share");
Pass::call(design, "opt_merge");
Pass::call(design, "opt_rmdff");
Pass::call(design, "opt_clean");