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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - ARM assembler refuses to assemble instruction"
href="https://bugs.llvm.org/show_bug.cgi?id=51297">51297</a>
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<th>Summary</th>
<td>ARM assembler refuses to assemble instruction
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>Other
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>C
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>jacobnavia7@gmail.com
</td>
</tr>
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<th>CC</th>
<td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<pre>jacob@rock64:~/lcc/book/test$ cat bug.s
.text
main:
ldr x15,=0x401acccccccccccd # assembles and executes correctly
ldr d15,=0x401acccccccccccd # <<<<<<<<<< BUG <<<<<<<<<<<<<
ret
.pool
.L9:
.size main,.L9-main
.globl main
jacob@rock64:~/lcc/book/test$ clang bug.s
bug.s:4:10: error: Immediate too large for register
ldr d15,=0x401acccccccccccd
^
jacob@rock64:~/lcc/book/test$ as -c -o bug bug.s
jacob@rock64:~/lcc/book/test$
As you can see, "as" (gnu as) assembles correctly the SAME program. Now, at the
execution, the instruction DOESN'T WORK at all. Some rubbish is loaded into
d15.
Is this a bug in clang?
Or is this a bug in "as" that assembles an incorrect instruction?
Or is this a bug in clang AND as?
Or is this a bug in the rockchip processor that doesn't do what is supposed to
do?
Or is this a bug in the documentation that doesn't warn that d15 shouldn't be
used with "ldr"?
PLEEEEEEEZE enlightmen me.
Thanks</pre>
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