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Re-add DSP_A_MINWIDTH, remove unnec. opt_expr -fine from synth_ice40

This commit is contained in:
Eddie Hung 2019-09-20 09:02:29 -07:00
parent 829e4f5d2c
commit 289cf688b7
2 changed files with 2 additions and 3 deletions
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3
techlibs/ice40/synth_ice40.cc
View File

@ -274,9 +274,8 @@ struct SynthIce40Pass : public ScriptPass
run("opt_clean"); run("opt_clean");
if (help_mode || dsp) { if (help_mode || dsp) {
run("techmap -map +/mul2dsp.v -map +/ice40/dsp_map.v -D DSP_A_MAXWIDTH=16 -D DSP_B_MAXWIDTH=16 " run("techmap -map +/mul2dsp.v -map +/ice40/dsp_map.v -D DSP_A_MAXWIDTH=16 -D DSP_B_MAXWIDTH=16 "
"-D DSP_A_MINWIDTH=2 -D DSP_Y_MINWIDTH=11 " "-D DSP_A_MINWIDTH=2 -D DSP_B_MINWIDTH=2 -D DSP_Y_MINWIDTH=11 "
"-D DSP_NAME=$__MUL16X16", "(if -dsp)"); "-D DSP_NAME=$__MUL16X16", "(if -dsp)");
run("opt_expr -fine", " (if -dsp)");
run("wreduce", " (if -dsp)"); run("wreduce", " (if -dsp)");
run("ice40_dsp", " (if -dsp)"); run("ice40_dsp", " (if -dsp)");
run("chtype -set $mul t:$__soft_mul","(if -dsp)"); run("chtype -set $mul t:$__soft_mul","(if -dsp)");

2
techlibs/xilinx/synth_xilinx.cc
View File

@ -343,7 +343,7 @@ struct SynthXilinxPass : public ScriptPass
if (!nodsp || help_mode) { if (!nodsp || help_mode) {
// NB: Xilinx multipliers are signed only // NB: Xilinx multipliers are signed only
run("techmap -map +/mul2dsp.v -map +/xilinx/dsp_map.v -D DSP_A_MAXWIDTH=25 -D DSP_A_MAXWIDTH_PARTIAL=18 -D DSP_B_MAXWIDTH=18 " run("techmap -map +/mul2dsp.v -map +/xilinx/dsp_map.v -D DSP_A_MAXWIDTH=25 -D DSP_A_MAXWIDTH_PARTIAL=18 -D DSP_B_MAXWIDTH=18 "
"-D DSP_B_MINWIDTH=2 " // Blocks Nx1 multipliers "-D DSP_A_MINWIDTH=2 -D DSP_B_MINWIDTH=2 " // Blocks Nx1 multipliers
"-D DSP_Y_MINWIDTH=9 " // UG901 suggests small multiplies are those 4x4 and smaller "-D DSP_Y_MINWIDTH=9 " // UG901 suggests small multiplies are those 4x4 and smaller
"-D DSP_SIGNEDONLY=1 -D DSP_NAME=$__MUL25X18"); "-D DSP_SIGNEDONLY=1 -D DSP_NAME=$__MUL25X18");
run("xilinx_dsp"); run("xilinx_dsp");