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intel_alm: better map wide but shallow multiplies

This commit is contained in:
Dan Ravensloft 2020-08-26 21:47:06 +01:00 committed by Marcelina Kościelnicka
parent c75d8c7439
commit 028f96e536
1 changed files with 6 additions and 2 deletions
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8
techlibs/intel_alm/synth_intel_alm.cc
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@ -214,10 +214,14 @@ struct SynthIntelALMPass : public ScriptPass {
run("techmap -map +/mul2dsp.v [...]", "(unless -nodsp)");
} else if (!nodsp) {
// Cyclone V supports 9x9 multiplication, Cyclone 10 GX does not.
run("techmap -map +/mul2dsp.v -D DSP_A_MAXWIDTH=27 -D DSP_B_MAXWIDTH=27 -D DSP_A_MINWIDTH=19 -D DSP_B_MINWIDTH=19 -D DSP_NAME=__MUL27X27");
run("techmap -map +/mul2dsp.v -D DSP_A_MAXWIDTH=27 -D DSP_B_MAXWIDTH=27 -D DSP_A_MINWIDTH=19 -D DSP_B_MINWIDTH=4 -D DSP_NAME=__MUL27X27");
run("chtype -set $mul t:$__soft_mul");
run("techmap -map +/mul2dsp.v -D DSP_A_MAXWIDTH=27 -D DSP_B_MAXWIDTH=27 -D DSP_A_MINWIDTH=4 -D DSP_B_MINWIDTH=19 -D DSP_NAME=__MUL27X27");
run("chtype -set $mul t:$__soft_mul");
if (family_opt == "cyclonev") {
run("techmap -map +/mul2dsp.v -D DSP_A_MAXWIDTH=18 -D DSP_B_MAXWIDTH=18 -D DSP_A_MINWIDTH=10 -D DSP_B_MINWIDTH=10 -D DSP_NAME=__MUL18X18");
run("techmap -map +/mul2dsp.v -D DSP_A_MAXWIDTH=18 -D DSP_B_MAXWIDTH=18 -D DSP_A_MINWIDTH=10 -D DSP_B_MINWIDTH=4 -D DSP_NAME=__MUL18X18");
run("chtype -set $mul t:$__soft_mul");
run("techmap -map +/mul2dsp.v -D DSP_A_MAXWIDTH=18 -D DSP_B_MAXWIDTH=18 -D DSP_A_MINWIDTH=4 -D DSP_B_MINWIDTH=10 -D DSP_NAME=__MUL18X18");
run("chtype -set $mul t:$__soft_mul");
run("techmap -map +/mul2dsp.v -D DSP_A_MAXWIDTH=9 -D DSP_B_MAXWIDTH=9 -D DSP_A_MINWIDTH=4 -D DSP_B_MINWIDTH=4 -D DSP_NAME=__MUL9X9");
run("chtype -set $mul t:$__soft_mul");