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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 - Missed opportunity for SETE for 2-cases switch"
href="https://bugs.llvm.org/show_bug.cgi?id=38002">38002</a>
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</tr>
<tr>
<th>Summary</th>
<td>Missed opportunity for SETE for 2-cases switch
</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>
<tr>
<th>OS</th>
<td>Linux
</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>
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<th>Component</th>
<td>Backend: X86
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>david.bolvansky@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Hello,
Code:
bool sw1(int x) {
switch(x) {
case 3:
case 5:
return true;
default:
return false;
}
}
Clang trunk -03/Os:
sw1(int): # @sw1(int)
mov al, 1
cmp edi, 3
je .LBB0_3
cmp edi, 5
jne .LBB0_2 <----------- avoid jump, use "sete al"?
.LBB0_3:
ret
.LBB0_2:
xor eax, eax
ret</pre>
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