Diff of assembly generated for the Byzantium vs. Petersburg EVM versions for the Namev2_prx11.sol contract

Namev2_prx11-asm-Byzantium-vs-Petersburg.diff

--- contracts/Namev2_prx11.asm	2019-04-19 00:49:46.409038062 +0800
+++ contracts/Namev2_prx11.petersburg.asm	2019-04-19 00:49:17.116352277 +0800
@@ -25,7 +25,7 @@
     /* "contracts/Namev2_prx11.sol":170:188  owner = msg.sender */
   dup1
   sload
-  not(sub(exp(0x02, 0xa0), 0x01))
+  not(sub(shl(0xa0, 0x01), 0x01))
   and
     /* "contracts/Namev2_prx11.sol":178:188  msg.sender */
   caller
@@ -64,9 +64,9 @@
         /* "contracts/Namev2_prx11.sol":27:493  contract Namev2_prx11 {... */
       pop
       jumpi(tag_2, lt(calldatasize, 0x04))
-      div(calldataload(0x00), 0x0100000000000000000000000000000000000000000000000000000000)
+      shr(0xe0, calldataload(0x00))
+      dup1
       0x06fdde03
-      dup2
       eq
       tag_3
       jumpi
@@ -397,7 +397,7 @@
       0x40
       dup1
       mload
-      0xffffffffffffffffffffffffffffffffffffffff
+      sub(shl(0xa0, 0x01), 0x01)
       swap1
       swap3
       and
@@ -440,7 +440,7 @@
       pop
         /* "contracts/Namev2_prx11.sol":402:491  function changeOwner(address newOwner) onlyOwner public {... */
       calldataload
-      0xffffffffffffffffffffffffffffffffffffffff
+      sub(shl(0xa0, 0x01), 0x01)
       and
       tag_23
       jump	// in
@@ -559,7 +559,7 @@
         /* "contracts/Namev2_prx11.sol":288:396  function changeName(string memory n) onlyOwner public {... */
     tag_18:
         /* "contracts/Namev2_prx11.sol":254:259  owner */
-      and(0xffffffffffffffffffffffffffffffffffffffff, sload(0x00))
+      and(sub(shl(0xa0, 0x01), 0x01), sload(0x00))
         /* "contracts/Namev2_prx11.sol":240:250  msg.sender */
       caller
         /* "contracts/Namev2_prx11.sol":240:259  msg.sender == owner */
@@ -710,13 +710,13 @@
       jump	// out
         /* "contracts/Namev2_prx11.sol":55:75  address public owner */
     tag_20:
-      and(0xffffffffffffffffffffffffffffffffffffffff, sload(0x00))
+      and(sub(shl(0xa0, 0x01), 0x01), sload(0x00))
       dup2
       jump	// out
         /* "contracts/Namev2_prx11.sol":402:491  function changeOwner(address newOwner) onlyOwner public {... */
     tag_23:
         /* "contracts/Namev2_prx11.sol":254:259  owner */
-      and(0xffffffffffffffffffffffffffffffffffffffff, sload(0x00))
+      and(sub(shl(0xa0, 0x01), 0x01), sload(0x00))
         /* "contracts/Namev2_prx11.sol":240:250  msg.sender */
       caller
         /* "contracts/Namev2_prx11.sol":240:259  msg.sender == owner */
@@ -733,9 +733,9 @@
         /* "contracts/Namev2_prx11.sol":468:484  owner = newOwner */
       dup1
       sload
-      not(0xffffffffffffffffffffffffffffffffffffffff)
+      not(sub(shl(0xa0, 0x01), 0x01))
       and
-      0xffffffffffffffffffffffffffffffffffffffff
+      sub(shl(0xa0, 0x01), 0x01)
       swap3
       swap1
       swap3
@@ -862,6 +862,6 @@
       swap1
       jump	// out
 
-    auxdata: 0xa165627a7a72305820d3a048f02be32059646ba2c6baabfe0902aefd5660decac816eb87c4db88bb9d0029
+    auxdata: 0xa165627a7a723058200cfdd2efe845d832c8c54f1b81dcdcf36296b6e81e8074b975945ada8b03efa90029
 }