monocul.us/de4dot-cex
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Replace stloc + ldloc with dup + stloc only if it's a bool local

Browse Source
This commit is contained in:
de4dot 2011-10-21 18:53:36 +02:00
parent 4b3c52c44f
commit 8c2f26bfcb
1 changed files with 5 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
blocks/cflow/StLdlocFixer.cs
View File

@ -46,7 +46,7 @@ namespace de4dot.blocks.cflow {
for (int i = 0; i < instructions.Count; i++) {
var instr = instructions[i];
switch (instr.OpCode.Code) {
// Xenocode generates stloc + ldloc. Replace it with dup + stloc. It will eventually
// Xenocode generates stloc + ldloc (bool). Replace it with dup + stloc. It will eventually
// become dup + pop and be removed.
case Code.Stloc:
case Code.Stloc_S:
@ -58,7 +58,10 @@ namespace de4dot.blocks.cflow {
break;
if (!instructions[i + 1].isLdloc())
break;
if (Instr.getLocalVar(locals, instr) != Instr.getLocalVar(locals, instructions[i + 1]))
var local = Instr.getLocalVar(locals, instr);
if (local.VariableType.FullName != "System.Boolean")
continue;
if (local != Instr.getLocalVar(locals, instructions[i + 1]))
break;
instructions[i] = new Instr(Instruction.Create(OpCodes.Dup));
instructions[i + 1] = instr;