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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [NPM] Pass GlobalMerge does not honour print-before/after-all"
href="https://bugs.llvm.org/show_bug.cgi?id=48804">48804</a>
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<th>Summary</th>
<td>[NPM] Pass GlobalMerge does not honour print-before/after-all
</td>
</tr>
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<th>Product</th>
<td>new-bugs
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>new bugs
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>sjoerd.meijer@arm.com
</td>
</tr>
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<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
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<p>
<div>
<pre>Compiling this:
void foo(int x, int y) {
static int a = 0;
static int b = 0;
a += x;
b += y;
}
with e.g.:
clang -Ofast --target=aarch64 -S -mllvm -print-after-all -mllvm
-aarch64-enable-global-merge -fexperimental-new-pass-manager
won't show something similar as:
*** IR Dump After GlobalMerge ***
and it doesn't dump the IR. Adding -mllvm -debug to compile command will only
show:
Trying to merge set, starts with #0
which is the only LLVM_DEBUG message in that pass, just showing that the pass
runs.
This is actually not a problem of the NPM, also the legacy PM shows this
behaviour.
Thus, I don't think this needs to be a blocker, but it would be nice to fix it
and so I have added it as blocker just for visibility.</pre>
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</p>
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