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small optimization to condzext select

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Kevin Kim 2023-02-23 21:57:28 -08:00
parent 003ad0618d
commit f0cf7c2c6a
1 changed files with 1 additions and 1 deletions
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src/ieu/alu.sv
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@ -64,7 +64,7 @@ module alu #(parameter WIDTH=32) (
if (`ZBA_SUPPORTED) begin: zbamuxes if (`ZBA_SUPPORTED) begin: zbamuxes
// Zero Extend Mux // Zero Extend Mux
if (WIDTH == 64) begin if (WIDTH == 64) begin
assign CondZextA = (BSelect[3] & (W64 | Funct3[0])) ? {{(32){1'b0}}, A[31:0]} : A; //NOTE: do we move this mux select logic into the Decode Stage? assign CondZextA = (BSelect[3] & (W64)) ? {{(32){1'b0}}, A[31:0]} : A; //NOTE: do we move this mux select logic into the Decode Stage?
end else assign CondZextA = A; end else assign CondZextA = A;
// Pre-Shift Mux // Pre-Shift Mux