github-mirrors/ibex
1
0
Fork 0
mirror of https://github.com/lowRISC/ibex.git synced 2025-04-24 22:07:43 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

Reorder statements to prevent latch inference

Browse source
This commit is contained in:
Jonathan Kimmitt 2020-04-14 13:05:51 +01:00 • committed by Greg Chadwick
parent 999735568e
commit bd45e9a355
1 changed files with 5 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

10
rtl/ibex_cs_registers.sv
View file

@ -860,6 +860,11 @@ module ibex_cs_registers #(
// event selection (hardwired) & control
always_comb begin : gen_mhpmcounter_incr
// Assign inactive counters (first to prevent latch inference)
for (int unsigned i=0; i<32; i++) begin : gen_mhpmcounter_incr_inactive
mhpmcounter_incr[i] = 1'b0;
end
// When adding or altering performance counter meanings and default
// mappings please update dv/verilator/pcount/cpp/ibex_pcounts.cc
// appropriately.
@ -878,11 +883,6 @@ module ibex_cs_registers #(
mhpmcounter_incr[10] = instr_ret_compressed_i; // num of compressed instr
mhpmcounter_incr[11] = mul_wait_i; // cycles waiting for multiply
mhpmcounter_incr[12] = div_wait_i; // cycles waiting for divide
// inactive counters
for (int unsigned i=3+MHPMCounterNum; i<32; i++) begin : gen_mhpmcounter_incr_inactive
mhpmcounter_incr[i] = 1'b0;
end
end
// event selector (hardwired, 0 means no event)