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fmax optimizations bundles

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This commit is contained in:
Blaise Tine
2021-09-06 01:36:57 -07:00
parent b52ace5142
commit 3e014c8285
8 changed files with 93 additions and 103 deletions
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20
hw/rtl/VX_alu_unit.v
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@@ -90,11 +90,6 @@ module VX_alu_unit #(
wire is_less = cmp_result[32];
wire is_equal = ~(| cmp_result[31:0]);
wire br_neg = `INST_BR_NEG(br_op);
wire br_less = `INST_BR_LESS(br_op);
wire br_static = `INST_BR_STATIC(br_op);
wire br_taken = ((br_less ? is_less : is_equal) ^ br_neg) | br_static;
// output
wire result_valid;
@@ -178,24 +173,33 @@ module VX_alu_unit #(
`endif
wire [`INST_BR_BITS-1:0] br_op_r;
wire is_less_r;
wire is_equal_r;
wire is_br_op_r;
assign stall_out = ~alu_commit_if.ready && alu_commit_if.valid;
VX_pipe_register #(
.DATAW (1 + `NW_BITS + `NUM_THREADS + 32 + `NR_BITS + 1 + (`NUM_THREADS * 32) + 1 + 1 + 32),
.DATAW (1 + `NW_BITS + `NUM_THREADS + 32 + `NR_BITS + 1 + (`NUM_THREADS * 32) + 1 + `INST_BR_BITS + 1 + 1 + 32),
.RESETW (1)
) pipe_reg (
.clk (clk),
.reset (reset),
.enable (!stall_out),
.data_in ({result_valid, result_wid, result_tmask, result_PC, result_rd, result_wb, result_data, result_is_br, br_taken, br_dest}),
.data_out ({alu_commit_if.valid, alu_commit_if.wid, alu_commit_if.tmask, alu_commit_if.PC, alu_commit_if.rd, alu_commit_if.wb, alu_commit_if.data, is_br_op_r, branch_ctl_if.taken, branch_ctl_if.dest})
.data_in ({result_valid, result_wid, result_tmask, result_PC, result_rd, result_wb, result_data, result_is_br, br_op, is_less, is_equal, br_dest}),
.data_out ({alu_commit_if.valid, alu_commit_if.wid, alu_commit_if.tmask, alu_commit_if.PC, alu_commit_if.rd, alu_commit_if.wb, alu_commit_if.data, is_br_op_r, br_op_r, is_less_r, is_equal_r, branch_ctl_if.dest})
);
assign alu_commit_if.eop = 1'b1;
`UNUSED_VAR (br_op_r)
wire br_neg = `INST_BR_NEG(br_op_r);
wire br_less = `INST_BR_LESS(br_op_r);
wire br_static = `INST_BR_STATIC(br_op_r);
assign branch_ctl_if.valid = alu_commit_if.valid && alu_commit_if.ready && is_br_op_r;
assign branch_ctl_if.taken = ((br_less ? is_less_r : is_equal_r) ^ br_neg) | br_static;
assign branch_ctl_if.wid = alu_commit_if.wid;
// can accept new request?