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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Load register with negative immediate leads to 'invalid instruction'"
href="https://bugs.llvm.org/show_bug.cgi?id=44858">44858</a>
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<th>Summary</th>
<td>Load register with negative immediate leads to 'invalid instruction'
</td>
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<th>Product</th>
<td>libraries
</td>
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<th>Version</th>
<td>10.0
</td>
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<th>Hardware</th>
<td>PC
</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>enhancement
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Backend: ARM
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>stefan@agner.ch
</td>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org, peter.smith@linaro.org, Ties.Stuij@arm.com
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<pre>Created <span class=""><a href="attachment.cgi?id=23111" name="attach_23111" title="reproducer assembly">attachment 23111</a> <a href="attachment.cgi?id=23111&action=edit" title="reproducer assembly">[details]</a></span>
reproducer assembly
Trying to use Encoding T4 of LDR (immediate, Thumb) which allows a negative
immediate leads to `invalid instruction`:
$ llvm-mc -triple=armv7-linux-gnueabi repr-wrong-selection.s
.text
.code 16
.globl _start
_start:
repr-wrong-selection.s:6:2: error: invalid instruction
ldr.w r3, [r1, #-4]!
^</pre>
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