<html>
<head>
<base href="http://llvm.org/bugs/" />
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Extra code generated in the presence of a large switch"
href="http://llvm.org/bugs/show_bug.cgi?id=15504">15504</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Extra code generated in the presence of a large 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>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Backend: X86
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>eugeni.stepanov@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=10175" name="attach_10175" title="reproducer">attachment 10175</a> <a href="attachment.cgi?id=10175&action=edit" title="reproducer">[details]</a></span>
reproducer
# clang test.c -S -O3 -o -
...
foo: # @foo
.cfi_startproc
# BB#0: # %entry
xorb %al, %al
testb %al, %al
je .LBB0_1
# BB#4: # %sw.epilog
ret
.LBB0_1: # %entry
movzbl (%rdi), %eax
jmpq *.LJTI0_0(,%rax,8)
.LBB0_2: # %sw.bb
jmp bar # TAILCALL
.LBB0_3: # %sw.bb1
jmp baz # TAILCALL
...
The part starting at "xorb %al, %al" does not seem to do anything useful.
"ret" at BB#4 is never taken.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>