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Stop trying to be too smart by prematurely optimising

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This commit is contained in:
Eddie Hung 2019-09-26 09:57:11 -07:00
parent 35aaa8d73a
commit 27e5bf5aad
3 changed files with 14 additions and 38 deletions
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4
techlibs/xilinx/synth_xilinx.cc
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@ -346,7 +346,9 @@ struct SynthXilinxPass : public ScriptPass
"-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_SIGNEDONLY=1 -D DSP_NAME=$__MUL25X18");
run("wreduce t:$add");
run("opt_expr -fine a:mul2dsp");
run("wreduce a:mul2dsp");
run("setattr -unset mul2dsp a:mul2dsp");
run("xilinx_dsp");
run("chtype -set $mul t:$__soft_mul");
}