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-rw-r--r--techlibs/xilinx/synth_xilinx.cc31
1 files changed, 17 insertions, 14 deletions
diff --git a/techlibs/xilinx/synth_xilinx.cc b/techlibs/xilinx/synth_xilinx.cc
index 4069094a6..00849ad00 100644
--- a/techlibs/xilinx/synth_xilinx.cc
+++ b/techlibs/xilinx/synth_xilinx.cc
@@ -67,13 +67,13 @@ struct SynthXilinxPass : public ScriptPass
log(" generate an output netlist suitable for ISE (enables -iopad)\n");
log("\n");
log(" -nobram\n");
- log(" disable inference of block rams\n");
+ log(" do not use block RAM cells in output netlist\n");
log("\n");
- log(" -nodram\n");
- log(" disable inference of distributed rams\n");
+ log(" -nolutram\n");
+ log(" do not use distributed RAM cells in output netlist\n");
log("\n");
log(" -nosrl\n");
- log(" disable inference of shift registers\n");
+ log(" do not use distributed SRL cells in output netlist\n");
log("\n");
log(" -nocarry\n");
log(" do not use XORCY/MUXCY/CARRY4 cells in output netlist\n");
@@ -116,7 +116,7 @@ struct SynthXilinxPass : public ScriptPass
}
std::string top_opt, edif_file, blif_file, family;
- bool flatten, retime, vpr, ise, iopad, noiopad, noclkbuf, nobram, nodram, nosrl, nocarry, nowidelut, abc9;
+ bool flatten, retime, vpr, ise, iopad, noiopad, noclkbuf, nobram, nolutram, nosrl, nocarry, nowidelut, abc9;
int widemux;
void clear_flags() YS_OVERRIDE
@@ -134,7 +134,7 @@ struct SynthXilinxPass : public ScriptPass
noclkbuf = false;
nocarry = false;
nobram = false;
- nodram = false;
+ nolutram = false;
nosrl = false;
nocarry = false;
nowidelut = false;
@@ -218,8 +218,8 @@ struct SynthXilinxPass : public ScriptPass
nobram = true;
continue;
}
- if (args[argidx] == "-nodram") {
- nodram = true;
+ if (args[argidx] == "-nolutram" || /*deprecated alias*/ args[argidx] == "-nodram") {
+ nolutram = true;
continue;
}
if (args[argidx] == "-nosrl") {
@@ -316,7 +316,7 @@ struct SynthXilinxPass : public ScriptPass
run("opt_clean");
}
- if (check_label("bram", "(skip if '-nobram')")) {
+ if (check_label("map_bram", "(skip if '-nobram')")) {
if (help_mode) {
run("memory_bram -rules +/xilinx/{family}_brams.txt");
run("techmap -map +/xilinx/{family}_brams_map.v");
@@ -333,20 +333,23 @@ struct SynthXilinxPass : public ScriptPass
}
}
- if (check_label("dram", "(skip if '-nodram')")) {
- if (!nodram || help_mode) {
- run("memory_bram -rules +/xilinx/drams.txt");
- run("techmap -map +/xilinx/drams_map.v");
+ if (check_label("map_lutram", "(skip if '-nolutram')")) {
+ if (!nolutram || help_mode) {
+ run("memory_bram -rules +/xilinx/lutrams.txt");
+ run("techmap -map +/xilinx/lutrams_map.v");
}
}
- if (check_label("fine")) {
+ if (check_label("map_ffram")) {
if (widemux > 0)
run("opt -fast -mux_bool -undriven -fine"); // Necessary to omit -mux_undef otherwise muxcover
// performs less efficiently
else
run("opt -fast -full");
run("memory_map");
+ }
+
+ if (check_label("fine")) {
run("dffsr2dff");
run("dff2dffe");
if (help_mode) {