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<div dir="ltr"><font face="Tahoma" color="#000000" size="2">Dear LLVM members.</font></div>
<div dir="ltr"><font face="tahoma" size="2"></font> </div>
<div dir="ltr"><font face="tahoma" size="2">I am compiling coreutils-7.4 package for ARM linux using LLVM 2.5 version.</font></div>
<div dir="ltr"><font face="tahoma" size="2"></font> </div>
<div dir="ltr"><font face="tahoma" size="2">When i compiled 'od' program in coreutils package using LLVM 2.5,</font></div>
<div dir="ltr"><font face="tahoma" size="2">i could see the error message on llc processing.</font></div>
<div dir="ltr"><font face="tahoma" size="2"></font> </div>
<div dir="ltr">> llvm-gcc -emit-llvm ./od.c -c -o ./od.bc <em>-other-options...</em></div>
<div dir="ltr">> llc -march=arm ./od.bc -f -o ./od.s<br>
llc: /home/jaykang10/HardDisk2/Projects/LLVM/src/llvm-2.5/lib/Target/TargetData.cpp:305: unsigned int llvm::TargetData::getAlignmentInfo(llvm::AlignTypeEnum, uint32_t, bool, const llvm::Type*) const: Assertion `AlignType == VECTOR_ALIGN && "Unknown alignment
type!"' failed.</div>
<div dir="ltr"> </div>
<div dir="ltr"><font face="Tahoma" size="2">The problem was that </font></div>
<div dir="ltr"><font face="Tahoma" size="2"><font face="tahoma">when i converted 'od' source code to llvm bitcode,
</font>long double type of 'od' source code was changed to x86_fp80 type in llvm bitcode and then llc on ARM target was not support x86_fp80 type. </font></div>
<div dir="ltr"><font face="tahoma" size="2"></font> </div>
<div dir="ltr"><font face="tahoma" size="2">I think that long double type on ARM is 8 byte. (same as double type)</font></div>
<div dir="ltr"><font face="tahoma" size="2"></font> </div>
<div dir="ltr"><font face="tahoma" size="2">When we use llvm on ARM target,(or other target not support x86_fp80)</font></div>
<div dir="ltr"><font size="2"><font face="tahoma">i think it might be better to</font><font face="tahoma"> convert long double type in C to double type in llvm bitcode on llvm-gcc or</font></font></div>
<div dir="ltr"><font face="tahoma" size="2">treat x86_fp80 type in llvm bitcode as double type on llc.</font></div>
<div dir="ltr"><font face="tahoma" size="2">(I wonder if we select the target at llvm-gcc build time)</font></div>
<div dir="ltr"><font face="tahoma" size="2"></font> </div>
<div dir="ltr"><font face="tahoma" size="2">I would like to know how to solve the above problem.</font></div>
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<div dir="ltr"><font face="tahoma" size="2">Thank you</font></div>
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<div dir="ltr"><font face="tahoma" size="2">Best regards,</font></div>
<div dir="ltr"><font face="tahoma" size="2"></font> </div>
<div dir="ltr"><font face="tahoma" size="2">Jin-Gu Kang</font></div>
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