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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - load instruction without MachineMemOperand on -O0"
href="https://llvm.org/bugs/show_bug.cgi?id=24427">24427</a>
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<th>Summary</th>
<td>load instruction without MachineMemOperand on -O0
</td>
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<th>Product</th>
<td>libraries
</td>
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<th>Version</th>
<td>trunk
</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>normal
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Common Code Generator Code
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>kjell.braden@cased.de
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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<th>Classification</th>
<td>Unclassified
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<p>
<div>
<pre>Consider this example code:
====
char mem_buffer[100];
int main(int argc, char* argv[]) {
return (int) mem_buffer[argc];
}
====
looking at the generated MachineInstrs:
$ clang -target armv7-linux-gnueabihf -O0 -c -emit-llvm test.c
$ llc -O0 -print-after expand-isel-pseudos test.bc
will generate this instruction, lacking a memory operand:
%vreg6<def> = LDRBi12 %vreg11, 0, pred:14, pred:%noreg; GPRnopc:%vreg6
GPR:%vreg11</pre>
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</p>
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