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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Argument promotion not happening for static function."
href="https://bugs.llvm.org/show_bug.cgi?id=52554">52554</a>
</td>
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<tr>
<th>Summary</th>
<td>Argument promotion not happening for static function.
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Interprocedural Analyses
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>jmuizelaar@mozilla.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Given:
__attribute__((noinline))
static int foo(const int &x) {
return x;
}
int r(int x) {
return foo(x);
}
GCC gives:
foo(int const&) [clone .isra.0]:
mov eax, edi
ret
r(int):
jmp foo(int const&) [clone .isra.0]
vs clang's:
r(int): # @r(int)
push rax
mov dword ptr [rsp + 4], edi
lea rdi, [rsp + 4]
call foo(int const&)
pop rcx
ret
foo(int const&): # @foo(int const&)
mov eax, dword ptr [rdi]
ret</pre>
</div>
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