<div dir="ltr">I don't understand what you mean by that. By Decl, I assumed you meant the TypedefNameDecl created for the object "KPCR", but as far as I can tell, only types have a getAs field.<div><br></div>
<div>For actually solving the problem, it seems that "fs:[0] 12" is equivalent to "fs:[12]". I see that there are several calls to AsmRewrites->push_back... is there a way to amend the most recent thing you pushed onto that object?</div>
<div><br></div><div>Thanks,<br>JB</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, Feb 27, 2014 at 12:23 PM, Reid Kleckner <span dir="ltr"><<a href="mailto:rnk@google.com" target="_blank">rnk@google.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">It is, but you probably want to look for any RecordDecl to see if it's possible to do a field access. You can use Decl->getAs<RecordDecl>() to look through typedefs automatically.</div>
<div class="HOEnZb"><div class="h5"><div class="gmail_extra">
<br><br><div class="gmail_quote">On Thu, Feb 27, 2014 at 11:12 AM, JB Feldman <span dir="ltr"><<a href="mailto:jb.feldman@kyrus-tech.com" target="_blank">jb.feldman@kyrus-tech.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">I'm trying to track this down, am I correct that in the example I pasted above: "KPCR" (in the bug report, "s") should be a TypedefNameDecl?</div><div><div>
<div class="gmail_extra"><br><br><div class="gmail_quote">
On Thu, Feb 27, 2014 at 11:38 AM, JB Feldman <span dir="ltr"><<a href="mailto:jb.feldman@kyrus-tech.com" target="_blank">jb.feldman@kyrus-tech.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">Bug has been filed: <a href="http://llvm.org/bugs/show_bug.cgi?id=18994" target="_blank">http://llvm.org/bugs/show_bug.cgi?id=18994</a></div><div><div><div class="gmail_extra"><br>
<br><div class="gmail_quote">On Thu, Feb 27, 2014 at 10:52 AM, Reid Kleckner <span dir="ltr"><<a href="mailto:rnk@google.com" target="_blank">rnk@google.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>This also happens (just once) in the Chromium build:</div><div><a href="http://build.chromium.org/p/chromium.fyi/builders/Chromium%20Win%20Clang/builds/645/steps/compile/logs/stdio" target="_blank">http://build.chromium.org/p/chromium.fyi/builders/Chromium%20Win%20Clang/builds/645/steps/compile/logs/stdio</a><br>
</div><div><br></div><div>Parsing this involves Clang and llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp. It's really tricky because C++ expressions can occur in lots of places, making it harder to parse the assembly.</div>
<div><br></div><div>Feel free to file a bug on this.</div></div><div class="gmail_extra"><br><br><div class="gmail_quote"><div><div>On Thu, Feb 27, 2014 at 7:22 AM, JB Feldman <span dir="ltr"><<a href="mailto:jb.feldman@kyrus-tech.com" target="_blank">jb.feldman@kyrus-tech.com</a>></span> wrote:<br>
</div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div><div dir="ltr">Hi guys,<div><br></div><div>I will file a bug report in a little bit (once I get a minimal test case) but I wanted to ask if anyone understands the problem I'm seeing.</div>
<div><br></div><div>Trying to include ntddk.h and compiling with clang-cl, I get the following message:</div>
<div><br></div><div><div>In file included from kbfiltr.c:19:</div><div>In file included from ./kbfiltr.h:28:</div><div>C:\WINDDK\3790.1830\inc\ddk\wxp\ntddk.h(7149,29) : error: unexpected type name</div><div> 'KPCR': expected expression</div>
<div> __asm { movzx eax, _PCR KPCR.Number }</div><div> ^</div><div>Assertion failed: End.getPointer() <= EndPtr && "frontend claimed part of a token?", file ..\..\..\..\..\lib\Target\X86\AsmParser\X86AsmParser.cpp, line 1481</div>
<div>clang-cl.exe: error: clang frontend command failed with exit code 3 (use -v to s</div><div>ee invocation)</div></div><div><br></div><div>The assertion failure obviously results in a crash.</div><div><br></div><div>So my initial guess was some kind of Lexer issue, maybe because of no semicolon, or... who knows. But then, I rewrote that code to read:</div>
<div><br></div><div>int x = FIELD_OFFSET(KPCR, Number);</div><div>__asm { movzx eax, fs:[x] } </div><div><br></div><div>Which compiles to the same code, and that actually did work with clang-cl. Can anyone tell me why one works and the other doesn't? (My guess: MS not following standard Intel notation spec)</div>
<div><br></div><div>Thanks,<br>JB</div></div>
<br></div></div><div>_______________________________________________<br>
cfe-dev mailing list<br>
<a href="mailto:cfe-dev@cs.uiuc.edu" target="_blank">cfe-dev@cs.uiuc.edu</a><br>
<a href="http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev" target="_blank">http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev</a><br>
<br></div></blockquote></div><br></div>
</blockquote></div><br></div>
</div></div></blockquote></div><br></div>
</div></div></blockquote></div><br></div>
</div></div></blockquote></div><br></div>