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<body><span class="vcard"><a class="email" href="mailto:renato.golin@linaro.org" title="Renato Golin <renato.golin@linaro.org>"> <span class="fn">Renato Golin</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - Bad code generation in post-ra ARMLoadStoreOptimizer pass in thumb1 mode"
href="https://llvm.org/bugs/show_bug.cgi?id=19972">bug 19972</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Status</td>
<td>REOPENED
</td>
<td>RESOLVED
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<td style="text-align:right;">CC</td>
<td>
</td>
<td>renato.golin@linaro.org
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<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>FIXED
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - Bad code generation in post-ra ARMLoadStoreOptimizer pass in thumb1 mode"
href="https://llvm.org/bugs/show_bug.cgi?id=19972#c7">Comment # 7</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - Bad code generation in post-ra ARMLoadStoreOptimizer pass in thumb1 mode"
href="https://llvm.org/bugs/show_bug.cgi?id=19972">bug 19972</a>
from <span class="vcard"><a class="email" href="mailto:renato.golin@linaro.org" title="Renato Golin <renato.golin@linaro.org>"> <span class="fn">Renato Golin</span></a>
</span></b>
<pre>Trunk generates:
push {r7, lr}
add r7, sp, #0
ldm r0!, {r1, r2}
subs r0, #8
bl bar
pop {r7, pc}
which, while inefficient (the sub is unnecessary with no write-back), looks
correct.
If people feel strongly about reducing code size for that sequence in Thumb1,
please open a new enhancement bug.</pre>
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