From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Sun, 12 Dec 2021 15:44:50 +0000 (+0000)
Subject: set fetch_failed into PowerDecoder2 combinatorially
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=962032ffd7f319a9a24b9170b0afd5ca101b4858;p=soc.git

set fetch_failed into PowerDecoder2 combinatorially
---

diff --git a/src/soc/simple/issuer.py b/src/soc/simple/issuer.py
index 9c40e45d..16646338 100644
--- a/src/soc/simple/issuer.py
+++ b/src/soc/simple/issuer.py
@@ -702,8 +702,9 @@ class TestIssuerInternal(Elaboratable):
             fetch_failed = core.icache.i_out.fetch_failed
         else:
             fetch_failed = Const(0, 1)
-        # set to zero initially
-        sync += pdecode2.instr_fault.eq(0)
+        # set to fault in decoder
+        # update (highest priority) instruction fault
+        comb += pdecode2.instr_fault.eq(fetch_failed)
 
         with m.FSM(name="issue_fsm"):
 
@@ -859,9 +860,6 @@ class TestIssuerInternal(Elaboratable):
                 # allowing it to be set again during the next execution
                 sync += pdecode2.ldst_exc.eq(0)
 
-                # update (highest priority) instruction fault
-                sync += pdecode2.instr_fault.eq(fetch_failed)
-
                 m.next = "INSN_EXECUTE"  # move to "execute"
 
             # handshake with execution FSM, move to "wait" once acknowledged