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<base href="https://bugs.llvm.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Opportunity to simplify conditions"
href="https://bugs.llvm.org/show_bug.cgi?id=47428">47428</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Opportunity to simplify conditions
</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>
<tr>
<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>Scalar Optimizations
</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>void bar (void);
void
foo (int a)
{
if (a < 100)
return;
if (200 < a)
return;
if (a - 10 > 150)
bar ();
}
Clang:
foo(int): # @foo(int)
cmp edi, 161
jl .LBB0_2
add edi, -100
cmp edi, 100
ja .LBB0_2
jmp bar() # TAILCALL
.LBB0_2:
ret
GCC:
foo(int):
sub edi, 161
cmp edi, 39
jbe .L4
ret
.L4:
jmp bar()
Maybe CE pass can simplify this code?</pre>
</div>
</p>
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