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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Utilize stack adjusting push better"
href="https://bugs.llvm.org/show_bug.cgi?id=49726">49726</a>
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<th>Summary</th>
<td>Utilize stack adjusting push better
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
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<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>
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<th>Component</th>
<td>Backend: X86
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>nok.raven@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>craig.topper@gmail.com, llvm-bugs@lists.llvm.org, llvm-dev@redking.me.uk, pengfei.wang@intel.com, spatel+llvm@rotateright.com
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<p>
<div>
<pre>void bar(long long int);
long long int foo(long long int x) {
bar(x);
return x;
}
produces:
foo(long long):
push rbx
mov rbx, rdi
call bar(long long)
mov rax, rbx
pop rbx
ret
could not it be:
foo(long long):
push rdi
call bar(long long)
pop rax
ret</pre>
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