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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [ARM64] CSINC is not generated when there is ZEXT between SETCC and ADD"
href="http://llvm.org/bugs/show_bug.cgi?id=19680">19680</a>
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<th>Summary</th>
<td>[ARM64] CSINC is not generated when there is ZEXT between SETCC and ADD
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<th>Product</th>
<td>new-bugs
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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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
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<th>Reporter</th>
<td>weimingz@codeaurora.org
</td>
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
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<p>
<div>
<pre>For exmaple:
define i64 @foo19(i64 %a, i64 %b, i64 %c) {
entry:
; CHECK-LABEL: foo19:
; CHECK: csinc x0, x2, x2
; CHECK-NOT: add
%cmp = icmp ult i64 %a, %b
%inc = zext i1 %cmp to i64
%inc.c = add i64 %inc, %c
ret i64 %inc.c
}
Currently, it emits:
cmp x0, x1
csinc w8, wzr, wzr, hs
add x0, x2, w8, uxtw
ret
We expect:
cmp x0, x1
csinc x0, x2, x2, cs
ret</pre>
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