<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>All:</div><div><br></div><div>Attached is a patch to GlobalOpt that adds an optimization that takes user written constant initialization code for global variables and hoists the initialization values into the global initializer. This optimization is only done on locally linked globals of integral types (scalars, arrays, and structs) that are constant initialized (and zero initialized prior to transformation). </div><div><br></div><div>The idea is to transform the following code:</div><div><br></div><div><div><font face="Courier New">A = internal global i32 0, align 4</font></div><div><font face="Courier New">isInit = internal global i1 false</font></div><div><font face="Courier New"><br></font></div><div><font face="Courier New">define i32* foobar() {</font></div><div><font face="Courier New"> %.b = load i1* isInit</font></div><div><font face="Courier New"> %1 = zext i1 %.b to i8</font></div><div><font face="Courier New"> %2 = trunc i8 %1 to i1</font></div><div><font face="Courier New"> br i1 %2, BB4, label BB3</font></div><div><font face="Courier New">BB3:</font></div><div><font face="Courier New"> store i32 113, i32* A, align 4</font></div><div><font face="Courier New"> store i1 true, i1* isInit</font></div><div><font face="Courier New"> br label %4</font></div><div><font face="Courier New">BB4:</font></div><div><font face="Courier New"> ret i32* A</font></div><div><font face="Courier New">}</font></div><div><br></div><div>Into:</div><div><font face="Courier New"><br></font></div><div><font face="Courier New">A = internal global i32 113, align 4</font></div><div><font face="Courier New"><br></font></div><div><font face="Courier New">define i32* @_Z8initTestv() {</font></div><div><font face="Courier New"> ret i32* A</font></div><div><font face="Courier New">}</font></div><div><br></div></div><div>Could someone on the list review my changes, provide feedback, and if possible submit my changes?</div><div><br></div><div>I also have some test cases I've written but I am still trying to figure out how to add them to llvm/test/Transforms/GlobalOpt (I don't see a lit.local.cfg in that directory as the docs specify). </div><div><br></div><div>Thanks</div><div><br></div><div>-Puyan</div><div><br></div><div><br></div></body></html>