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<body><span class="vcard"><a class="email" href="mailto:rnk@google.com" title="Reid Kleckner <rnk@google.com>"> <span class="fn">Reid Kleckner</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED WORKSFORME - Missed optimization: stack frame pushing/popping is not optimized away for trivial functions"
href="https://llvm.org/bugs/show_bug.cgi?id=26160">bug 26160</a>
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<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
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<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
</tr>
<tr>
<td style="text-align:right;">CC</td>
<td>
</td>
<td>rnk@google.com
</td>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>WORKSFORME
</td>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED WORKSFORME - Missed optimization: stack frame pushing/popping is not optimized away for trivial functions"
href="https://llvm.org/bugs/show_bug.cgi?id=26160#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED WORKSFORME - Missed optimization: stack frame pushing/popping is not optimized away for trivial functions"
href="https://llvm.org/bugs/show_bug.cgi?id=26160">bug 26160</a>
from <span class="vcard"><a class="email" href="mailto:rnk@google.com" title="Reid Kleckner <rnk@google.com>"> <span class="fn">Reid Kleckner</span></a>
</span></b>
<pre>Add -fomit-frame-pointer to get this behavior:
$ clang --target=x86_64-darwin -fomit-frame-pointer -O2 t.c -S -o -
.section __TEXT,__text,regular,pure_instructions
.macosx_version_min 10, 4
.globl _bar
.align 4, 0x90
_bar: ## @bar
.cfi_startproc
## BB#0: ## %entry
movl %edi, %eax
retq
.cfi_endproc
Darwin defaults to -fno-omit-frame-pointer because Apple has decided that they
want it to.</pre>
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