<div dir="ltr"><br><br><div class="gmail_quote">On Fri, May 8, 2015 at 1:17 PM Philip Reames <<a href="mailto:listmail@philipreames.com">listmail@philipreames.com</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div bgcolor="#FFFFFF" text="#000000">
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<div>On 05/08/2015 10:10 AM, David Blaikie
wrote:<br>
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<div class="gmail_quote">On Thu, May 7, 2015 at 11:29 PM,
Peter Mackay <span dir="ltr"><<a href="mailto:mackay.pete+llvm@gmail.com" target="_blank">mackay.pete+llvm@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello,<br>
<br>
I'm working on a binary translator project that emits an
.ll file. I'm<br>
trying to debug it in Visual Studio and would like to be
able to step<br>
through and see my generated .ll file in the debugger.<br>
<br>
Does LLVM support debug information corresponding to an
input .ll<br>
file?</blockquote>
<div><br>
For a brief time we had a "DebugIR" pass that would add
debug info to unannotated IR so your debugger could step
through at the IR level (rather than, say, the C++ level,
etc). It bitrotted quickly & was removed due to lack
of ownership/maintenance.<br>
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Personally, I would love to see this restored since it's a very
useful tool, but I don't have the expertise or time to assist with
anything other than reviews. <br></div></blockquote><div><br></div><div>... and that's the problem. No one was willing to keep it up to date or work on it.</div><div><br></div><div>-eric</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div bgcolor="#FFFFFF" text="#000000"></div><div bgcolor="#FFFFFF" text="#000000">
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- David<br>
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<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> My
hunch is "no, as it expects debug info to come from
Clang."<br>
<br>
I assemble it using:<br>
<br>
llc -filetype=obj -O0 -mtriple=x86_64-pc-windows-msvc
-o=output.obj input.ll<br>
<br>
I've ran objdump on the file as follows:<br>
<br>
llvm-objdump -section-headers output.obj<br>
<br>
and see the following output:<br>
<br>
output.obj: file format COFF-x86-64<br>
<br>
Sections:<br>
Idx Name Size Address Type<br>
0 .text 00000012 0000000000000000 TEXT<br>
1 .data 00000000 0000000000000000 DATA<br>
2 .bss 00000000 0000000000000000 BSS<br>
3 .drectve 00000018 0000000000000000<br>
4 .xdata 00000008 0000000000000000 DATA<br>
5 .pdata 0000000c 0000000000000000 DATA<br>
<br>
I don't think there's debugging information there, as the
.text<br>
section is very small.<br>
<br>
Thanks,<br>
Peter<br>
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