URL https://opencores.org/ocsvn/thor/thor/trunk

Subversion Repositories thor

[/] [thor/] [trunk/] [FT64v5/] [rtl/] [twoway/] [FT64_BranchPredicator.v] - Diff between revs 48 and 52

Rev 48	Rev 52
Line 113...	Line 113...
`// If taking a branch in commit0 then a following branch`	`// If taking a branch in commit0 then a following branch`
`// in commit1 is never encountered. So only update for`	`// in commit1 is never encountered. So only update for`
`// commit1 if commit0 is not taken.`	`// commit1 if commit0 is not taken.`
`reg [1:0] xbits_new;`	`reg [1:0] xbits_new;`
`always @*`	`always @*`
`if (takb & wrhist) begin`	`if (wrhist) begin`
	`if (takb) begin`
`if (bht_xbits != 2'd1)`	`if (bht_xbits != 2'd1)`
`xbits_new <= bht_xbits + 2'd1;`	`xbits_new <= bht_xbits + 2'd1;`
`else`	`else`
`xbits_new <= bht_xbits;`	`xbits_new <= bht_xbits;`
`end`	`end`
`else begin`	`else begin`
`if (bht_xbits != 2'd2)`	`if (bht_xbits != 2'd2)`
`xbits_new <= bht_xbits - {1'b0,wrhist};`	`xbits_new <= bht_xbits - 2'd1;`
`else`	`else`
`xbits_new <= bht_xbits;`	`xbits_new <= bht_xbits;`
`end`	`end`
	`end`
	`else`
	`xbits_new <= bht_xbits;`

`always @(posedge clk)`	`always @(posedge clk)`
`if (rst)`	`if (rst)`
`gbl_branch_hist <= 3'b000;`	`gbl_branch_hist <= 3'b000;`
`else begin`	`else begin`