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<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Sorry for the late report but I've only just found these issues. Llvm.org isn't working for me at the moment but I'll file tickets once it is.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The issues are:<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>Almabench has some significant numerical differences and fails the reference check for some configs. I'm investigating this one at the moment but early indications are that it's a similar (but different) problem to the one we had in
LLVM 3.6.2.<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>Read-only exception tables have broken compatibility with the ~2 year old gcc toolchains I was using for release testing cross compilation. This isn't a problem for most test-suite runs since we can just update the assembler but is causing
trouble for microMIPS. More recent toolchains lack the microMIPS multilib I was using and migrating to the new one is causing link failures. These failures are related to ELF header bits specifying the SNaN/QNaN encodings to be IEEE754-1985 or IEEE754-2008
compliant. I suspect the –mnan=2008 isn't reaching the assembler.<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="mso-list:Ignore">3.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>Clang is incompatible with changes to the mips-mti-linux-gnu sysroot from Imagination's mips-mti-linux-gnu toolchain. Libaries are still multilib'd (albeit with a reduced set) but some of the include paths aren't anymore. It's also no
longer correct to include sysroot/include (this path is added by common code) since this skips some function definitions. Instead, we must only include sysroot/usr/include like GCC does. There may be more details but so far the fix doesn't look simple. As
far as I can tell, clang's multilib expects includes and libraries to have the same layout (osSuffix() seems to control both). The good news is that it's not a regression since we can use toolchains from before this layout change.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="text-align:justify"><b><span style="font-size:12.0pt;font-family:"Arial","sans-serif";color:#3333FF">Daniel Sanders<o:p></o:p></span></b></p>
<p class="MsoNormal" style="text-align:justify"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#3333FF">Leading Software Design Engineer, MIPS Processor IP<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#3333FF">Imagination Technologies Limited<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__www.imgtec.com_&d=AwMFAg&c=8hUWFZcy2Z-Za5rBPlktOQ&r=Mfk2qtn1LTDThVkh6-oGglNfMADXfJdty4_bhmuhMHA&m=K4CUih-MV4ytxP4HxETs-aexQWt_VhGzdtvS7Q4PtfE&s=jNuftM3MAhxKCT54sfMJDt_51K15C6aqrspFaUvRUB8&e="><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:blue">www.imgtec.com</span></a><span style="font-size:10.0pt;font-family:"Arial","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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