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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Should warn for __attribute__((pcs("aapcs-vfp"))) when target does not have floating-point"
href="https://bugs.llvm.org/show_bug.cgi?id=42299">42299</a>
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<th>Summary</th>
<td>Should warn for __attribute__((pcs("aapcs-vfp"))) when target does not have floating-point
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>unspecified
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>Linux
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>enhancement
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Frontend
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>john.brawn@arm.com
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org, neeilans@live.com, richard-llvm@metafoo.co.uk
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<p>
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<pre>If you take the following:
__attribute__((pcs("aapcs-vfp")))
float add1(float a, float b) {
return a + b;
}
__attribute__((pcs("aapcs")))
float add2(float a, float b) {
return a + b;
}
and compile with --target=arm-none-eabi -mcpu=cortex-m3 then both functions are
generated with the aapcs pcs as the cortex-m3 doesn't have floating-point.
We should be giving a warning that pcs("aapcs-vfp") is being ignored. Looks
like ARMTargetInfo::checkCallingConvention is probably the place to do this.</pre>
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