<div dir="ltr"><div class="gmail_default" style>On Sat, Jan 5, 2013 at 3:30 PM, Duncan Sands <span dir="ltr"><<a href="mailto:baldrick@free.fr" target="_blank" class="cremed">baldrick@free.fr</a>></span> wrote:<br></div>
<div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Author: baldrick<br>
Date: Sat Jan 5 17:30:40 2013<br>
New Revision: 171641<br>
<br>
URL: <a href="http://llvm.org/viewvc/llvm-project?rev=171641&view=rev" target="_blank" class="cremed">http://llvm.org/viewvc/llvm-project?rev=171641&view=rev</a><br>
Log:<br>
After Chandler's latest changes, having TTI seems to have become obligatory<br>
(otherwise you can get a crash in SelectionDAG.cpp:3392, in the second of the<br>
following two lines:<br>
const TargetTransformInfo *TTI = DAG.getTargetTransformInfo();<br>
if (TTI->getIntImmCost(Val, VT.getTypeForEVT(*DAG.getContext())) < 2)<br>
)<br></blockquote><div><br></div><div style>Yea, this is what I thought it was, but there were other candidates as well.</div><div style><br></div><div style>This will all go away when I finish making it a *real* analysis, and then it will be optional, but without it you'll get poor behavior from LSR / vectorizer / popcnt recognizer / etc...</div>
<div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
Modified:<br>
dragonegg/trunk/src/Backend.cpp<br>
<br>
Modified: dragonegg/trunk/src/Backend.cpp<br>
URL: <a href="http://llvm.org/viewvc/llvm-project/dragonegg/trunk/src/Backend.cpp?rev=171641&r1=171640&r2=171641&view=diff" target="_blank" class="cremed">http://llvm.org/viewvc/llvm-project/dragonegg/trunk/src/Backend.cpp?rev=171641&r1=171640&r2=171641&view=diff</a><br>
==============================================================================<br>
--- dragonegg/trunk/src/Backend.cpp (original)<br>
+++ dragonegg/trunk/src/Backend.cpp Sat Jan 5 17:30:40 2013<br>
@@ -44,6 +44,7 @@<br>
#include "llvm/Support/SourceMgr.h"<br>
#include "llvm/Support/TargetRegistry.h"<br>
#include "llvm/Target/TargetLibraryInfo.h"<br>
+#include "llvm/TargetTransformInfo.h"<br>
#include "llvm/Transforms/IPO.h"<br>
#include "llvm/Transforms/IPO/PassManagerBuilder.h"<br>
<br>
@@ -683,6 +684,8 @@<br>
<br>
PerModulePasses = new PassManager();<br>
PerModulePasses->add(new DataLayout(TheModule));<br>
+ PerModulePasses->add(createNoTTIPass(TheTarget->getScalarTargetTransformInfo(),<br>
+ TheTarget->getVectorTargetTransformInfo()));<br>
<br>
bool NeedAlwaysInliner = false;<br>
llvm::Pass *InliningPass = 0;<br>
@@ -735,6 +738,8 @@<br>
FunctionPassManager *PM = CodeGenPasses =<br>
new FunctionPassManager(TheModule);<br>
PM->add(new DataLayout(*TheTarget->getDataLayout()));<br>
+ PM->add(createNoTTIPass(TheTarget->getScalarTargetTransformInfo(),<br>
+ TheTarget->getVectorTargetTransformInfo()));<br>
<br>
// Request that addPassesToEmitFile run the Verifier after running<br>
// passes which modify the IR.<br>
<br>
<br>
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</blockquote></div><br></div></div>