From 68bf1cc22cb6a566702b03953b5d88977845c86a Mon Sep 17 00:00:00 2001
From: Alban Gruin <alban.gruin@irit.fr>
Date: Tue, 1 Mar 2022 16:14:04 +0100
Subject: [PATCH] scoreboard: don't commit pending instructions when when
flushing
Signed-off-by: Alban Gruin <alban.gruin@irit.fr>
---
src/scoreboard.sv | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/src/scoreboard.sv b/src/scoreboard.sv
index 0f73faf2..eb546306 100644
--- a/src/scoreboard.sv
+++ b/src/scoreboard.sv
@@ -150,18 +150,18 @@ module scoreboard #(
if (mem_q[i].pending) begin
mem_n[i].pending = 1'b0;
mem_n[i].issued = 1'b0;
+ mem_n[i].sbe.valid = 1'b0;
flushed[i] = 1'b1;
end
end
- end
-
- // ------------
- // FU NONE
- // ------------
- for (int unsigned i = 0; i < NR_ENTRIES; i++) begin
+ end else if (mem_q[issue_pointer_q].sbe.fu == ariane_pkg::NONE &&
+ mem_q[issue_pointer_q].issued &&
+ ~mem_q[issue_pointer_q].pending) begin
+ // ------------
+ // FU NONE
+ // ------------
// The FU is NONE -> this instruction is valid immediately
- if (mem_q[i].sbe.fu == ariane_pkg::NONE && mem_q[i].issued && ~mem_q[i].pending)
- mem_n[i].sbe.valid = 1'b1;
+ mem_n[issue_pointer_q].sbe.valid = 1'b1;
end
// ------------
--
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