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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - JavaScriptCore: Do not use BLX for immediates (ARM-32)"
href="https://bugs.webkit.org/show_bug.cgi?id=170351#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - JavaScriptCore: Do not use BLX for immediates (ARM-32)"
href="https://bugs.webkit.org/show_bug.cgi?id=170351">bug 170351</a>
from <span class="vcard"><a class="email" href="mailto:fpizlo@apple.com" title="Filip Pizlo <fpizlo@apple.com>"> <span class="fn">Filip Pizlo</span></a>
</span></b>
<pre>(In reply to Mark Lam from <a href="show_bug.cgi?id=170351#c2">comment #2</a>)
<span class="quote">> Comment on <span class=""><a href="attachment.cgi?id=305990&action=diff" name="attach_305990" title="The patch">attachment 305990</a> <a href="attachment.cgi?id=305990&action=edit" title="The patch">[details]</a></span>
> The patch
>
> View in context:
> <a href="https://bugs.webkit.org/attachment.cgi?id=305990&action=review">https://bugs.webkit.org/attachment.cgi?id=305990&action=review</a>
>
> I was wondering why this never posed a problem before for us before. I did
> a local build, and see that the compiled LowLevelInterpreter.o does emit blx
> instructions. However, in the llinked version of the code, the linker
> changed the blx into bl instructions. If the toolchain does not fix this
> for us, then this bug would have manifested.</span >
It's right to use blx on iOS.
<span class="quote">>
> Hence, r=me
>
> > Source/JavaScriptCore/ChangeLog:8
> > + 'call' meta-instruction (which may be found in LowLevelInterperter.asm
>
> typo: /LowLevelInterperter.asm/LowLevelInterpreter.asm/
>
> > Source/JavaScriptCore/ChangeLog:16
> > + This behaviour is unwanted, since the C++ code and the offlineasm code
>
> /offlineasm code/offlineasm generated code/</span ></pre>
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