Added command line tests for keccak optimization with low runs

The value of keccak256(0, 32) should not be replaced by the big constant

test/cmdlineTests/keccak_optimization_deploy_code/args

@@ -0,0 +1 @@
+--ir-optimized --optimize --optimize-runs 50000

test/cmdlineTests/keccak_optimization_deploy_code/err

@@ -0,0 +1 @@
+

test/cmdlineTests/keccak_optimization_deploy_code/exit

@@ -0,0 +1 @@
+0

test/cmdlineTests/keccak_optimization_deploy_code/input.sol

@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-v3
+pragma solidity >= 0.0.0;
+
+contract C {
+    constructor() {
+        assembly {
+            mstore(0, 100)
+            // because this is part of deploy code, the keccak will not be evaluated
+            sstore(0, keccak256(0, 32))
+        }
+    }
+
+    fallback() external {
+        assembly {
+            mstore(0, 100)
+            // The keccak here would be evaluated
+            sstore(0, keccak256(0, 32))
+        }
+
+    }
+}

test/cmdlineTests/keccak_optimization_deploy_code/output

@@ -0,0 +1,32 @@
+Optimized IR:
+/*******************************************************
+ *                       WARNING                       *
+ *  Solidity to Yul compilation is still EXPERIMENTAL  *
+ *       It can result in LOSS OF FUNDS or worse       *
+ *                !USE AT YOUR OWN RISK!               *
+ *******************************************************/
+
+object "C_12" {
+    code {
+        {
+            mstore(64, 128)
+            if callvalue() { revert(0, 0) }
+            mstore(0, 100)
+            sstore(0, keccak256(0, 32))
+            let _1 := datasize("C_12_deployed")
+            codecopy(0, dataoffset("C_12_deployed"), _1)
+            return(0, _1)
+        }
+    }
+    object "C_12_deployed" {
+        code {
+            {
+                mstore(64, 128)
+                if callvalue() { revert(0, 0) }
+                mstore(0, 100)
+                sstore(0, 17385872270140913825666367956517731270094621555228275961425792378517567244498)
+                stop()
+            }
+        }
+    }
+}

test/cmdlineTests/keccak_optimization_low_runs/args

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+--ir-optimized --optimize --optimize-runs 1

test/cmdlineTests/keccak_optimization_low_runs/err

@@ -0,0 +1 @@
+

test/cmdlineTests/keccak_optimization_low_runs/exit

@@ -0,0 +1 @@
+0

test/cmdlineTests/keccak_optimization_low_runs/input.sol

@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: GPL-v3
+pragma solidity >= 0.0.0;
+
+contract C {
+    fallback() external {
+        assembly {
+            mstore(0, 100)
+            // because of the low runs value, the constant will not be optimized
+            sstore(0, keccak256(0, 32))
+        }
+    }
+}

test/cmdlineTests/keccak_optimization_low_runs/output

@@ -0,0 +1,30 @@
+Optimized IR:
+/*******************************************************
+ *                       WARNING                       *
+ *  Solidity to Yul compilation is still EXPERIMENTAL  *
+ *       It can result in LOSS OF FUNDS or worse       *
+ *                !USE AT YOUR OWN RISK!               *
+ *******************************************************/
+
+object "C_7" {
+    code {
+        {
+            mstore(64, 128)
+            if callvalue() { revert(0, 0) }
+            let _1 := datasize("C_7_deployed")
+            codecopy(0, dataoffset("C_7_deployed"), _1)
+            return(0, _1)
+        }
+    }
+    object "C_7_deployed" {
+        code {
+            {
+                mstore(64, 128)
+                if callvalue() { revert(0, 0) }
+                mstore(0, 100)
+                sstore(0, keccak256(0, 32))
+                stop()
+            }
+        }
+    }
+}