From 9bdff6a9aa9a570e16cbca327cee44ee74b4411b Mon Sep 17 00:00:00 2001
From: Merry <git@mary.rs>
Date: Sat, 23 Jul 2022 18:42:43 +0100
Subject: [PATCH] constant_propagation_pass: Shift with non-zero value does not
 require c flag as input

---
 src/dynarmic/ir/opt/constant_propagation_pass.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/dynarmic/ir/opt/constant_propagation_pass.cpp b/src/dynarmic/ir/opt/constant_propagation_pass.cpp
index f30d9836..f63f6464 100644
--- a/src/dynarmic/ir/opt/constant_propagation_pass.cpp
+++ b/src/dynarmic/ir/opt/constant_propagation_pass.cpp
@@ -300,6 +300,7 @@ bool FoldShifts(IR::Inst& inst) {
     }
 
     const auto shift_amount = inst.GetArg(1);
+
     if (shift_amount.IsZero()) {
         if (carry_inst) {
             carry_inst->ReplaceUsesWith(inst.GetArg(2));
@@ -308,6 +309,10 @@ bool FoldShifts(IR::Inst& inst) {
         return false;
     }
 
+    if (inst.NumArgs() == 3 && shift_amount.IsImmediate() && !shift_amount.IsZero()) {
+        inst.SetArg(2, IR::Value(false));
+    }
+
     if (!inst.AreAllArgsImmediates() || carry_inst) {
         return false;
     }