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Run until convergence

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This commit is contained in:
Eddie Hung 2019-09-20 12:04:16 -07:00
parent 1b892ca1be
commit b0ad2592be
1 changed files with 9 additions and 3 deletions
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12
passes/pmgen/xilinx_dsp.cc
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@ -24,6 +24,8 @@
USING_YOSYS_NAMESPACE USING_YOSYS_NAMESPACE
PRIVATE_NAMESPACE_BEGIN PRIVATE_NAMESPACE_BEGIN
bool did_something;
#include "passes/pmgen/xilinx_dsp_pm.h" #include "passes/pmgen/xilinx_dsp_pm.h"
#include "passes/pmgen/xilinx_dsp_cascade_pm.h" #include "passes/pmgen/xilinx_dsp_cascade_pm.h"
@ -509,7 +511,7 @@ struct XilinxDspPass : public Pass {
log("be added to the multiplier result to form the next accumulation result.\n"); log("be added to the multiplier result to form the next accumulation result.\n");
log("\n"); log("\n");
log("Use of the dedicated 'PCOUT' -> 'PCIN' cascade path is detected for 'P' -> 'C'\n"); log("Use of the dedicated 'PCOUT' -> 'PCIN' cascade path is detected for 'P' -> 'C'\n");
log("connections (optionally, where 'P' is right-shifted by 18-bits and used as an\n"); log("connections (optionally, where 'P' is right-shifted by 17-bits and used as an\n");
log("input to the post-adder -- a pattern common for summing partial products to\n"); log("input to the post-adder -- a pattern common for summing partial products to\n");
log("implement wide multipliers).\n"); log("implement wide multipliers).\n");
log("\n"); log("\n");
@ -545,8 +547,12 @@ struct XilinxDspPass : public Pass {
xilinx_dsp_pm pm(module, module->selected_cells()); xilinx_dsp_pm pm(module, module->selected_cells());
pm.run_xilinx_dsp_pack(pack_xilinx_dsp); pm.run_xilinx_dsp_pack(pack_xilinx_dsp);
xilinx_dsp_cascade_pm pmc(module, module->selected_cells()); do {
pmc.run_xilinx_dsp_cascade(); did_something = false;
xilinx_dsp_cascade_pm pmc(module, module->selected_cells());
pmc.run_xilinx_dsp_cascadeP();
pmc.run_xilinx_dsp_cascadeAB();
} while (did_something);
} }
} }
} XilinxDspPass; } XilinxDspPass;