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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - FileCheck full support for logical operators"
href="http://llvm.org/bugs/show_bug.cgi?id=16870">16870</a>
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<th>Summary</th>
<td>FileCheck full support for logical operators
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<th>Product</th>
<td>new-bugs
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<th>Version</th>
<td>unspecified
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>new bugs
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>renato.golin@linaro.org
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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>FileCheck already support NOT and AND (Next), but it doesn't yet support OR.
A common use case is:
; CHECK: add r0, r1, r2
; CHECK-OR: add r0, r2, r1
So, a block of CHECK-ORs would be executed on the same block, and the cursor
advances by the length of the smaller pattern matched:
; CHECK: add r0, [[reg1]], [[reg2]]
; CHECK-OR: add r0, [[reg1]], [[reg3]]
; CHECK-OR: add r0, [[reg2]], [[reg1]]
; CHECK-OR: add r0, [[reg2]], [[reg3]]
; CHECK-OR: add r0, [[reg3]], [[reg1]]
; CHECK-OR: add r0, [[reg3]], [[reg2]]
If the text is "add r4", the cursor would advance to "4".
The pattern is broken by any other non-OR checks:
; CHECK: mul r0, ...
Maybe, AND could be an alias to NEXT, but I don't think that's critical.
There's no way to intermix AND/OR for now, since there is no concept of
grouping CHECKs, but it's something to consider for the future if we ever get
that far.</pre>
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