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<p class="MsoNormal"><span lang="EN-GB">Hello Clang-Developers,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">I have a question about the assembly output Clang-Cl generated for me, when passing /Fa. The code was using a __try and __except statement and I wanted to see how the __try statement is represented in the target assembly.
To my surprise there was no ".cv_loc" for that specific line - so I scrolled up a bit.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">There I found:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">push rbp<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">.seh_pushreg 5<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">sub rsp, 48<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">.seh_stackalloc 48<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">lea rbp, [rsp + 48]<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">.seh_setframe 5, 48<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">.seh_endprologue<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">I looked up those words and only could find out that those are pseudo code. I wonder, why am I not allowed to see the content behind those pseudo code? Is there a way to find out what will be written there later?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">I also found the following lines in a different code which really confused me:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">push rax<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">.seh_stackalloc 8<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">.seh_endprologue<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Even though there is written "stackalloc" the rsp is not changed, but in the code I posted above it was changed.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Kind greetings<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Björn<o:p></o:p></span></p>
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