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<body><span class="vcard"><a class="email" href="mailto:hans@chromium.org" title="Hans Wennborg <hans@chromium.org>"> <span class="fn">Hans Wennborg</span></a>
</span> changed
<a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [CodeGenPrepare] Store splitting creates invalid alignments on big-endian targets, and under-aligned stores on all targets"
href="https://bugs.llvm.org/show_bug.cgi?id=44877">bug 44877</a>
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<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>RESOLVED
</td>
<td>REOPENED
</td>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>FIXED
</td>
<td>---
</td>
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<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [CodeGenPrepare] Store splitting creates invalid alignments on big-endian targets, and under-aligned stores on all targets"
href="https://bugs.llvm.org/show_bug.cgi?id=44877#c9">Comment # 9</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [CodeGenPrepare] Store splitting creates invalid alignments on big-endian targets, and under-aligned stores on all targets"
href="https://bugs.llvm.org/show_bug.cgi?id=44877">bug 44877</a>
from <span class="vcard"><a class="email" href="mailto:hans@chromium.org" title="Hans Wennborg <hans@chromium.org>"> <span class="fn">Hans Wennborg</span></a>
</span></b>
<pre>That's strange. The test passes on my machine, and the output of the first run
line looks like this:
$ /work/llvm.monorepo.rel/build.release/bin/opt -S -codegenprepare
-mtriple=powerpc64-unknown-linux-gnu -data-layout="E-m:e-i64:64-n32:64"
-force-split-store <
/work/llvm.monorepo.rel/llvm/test/Transforms/CodeGenPrepare/PowerPC/split-store-alignment.ll
| head -19
; ModuleID = '<stdin>'
source_filename = "<stdin>"
target datalayout = "E-m:e-i64:64-n32:64"
target triple = "powerpc64-unknown-linux-gnu"
define void @split_store_align1(float %x, i64* %p) {
%b = bitcast float %x to i32
%z = zext i32 0 to i64
%s = shl nuw nsw i64 %z, 32
%z2 = zext i32 %b to i64
%o = or i64 %s, %z2
%1 = bitcast i64* %p to i32*
%2 = getelementptr i32, i32* %1, i32 1
store i32 %b, i32* %2, align 1
%3 = bitcast i64* %p to i32*
store i32 0, i32* %3, align 1
ret void
}
Could it be due to a difference in host architecture or build configuration or
something?</pre>
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