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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [SPARC64] 64bit target tries to do tail call optimization, causing runtime assertion"
href="http://llvm.org/bugs/show_bug.cgi?id=17506">17506</a>
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<th>Summary</th>
<td>[SPARC64] 64bit target tries to do tail call optimization, causing runtime assertion
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<th>Product</th>
<td>libraries
</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>All
</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
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<th>Component</th>
<td>Backend: Sparc
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>syoyofujita@gmail.com
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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>Tail call optimization isn't yet supported on Sparc 64bit.
As done in 32bit target, disable tail call optimization to fix the problem.
diff --git a/lib/Target/Sparc/SparcISelLowering.cpp
b/lib/Target/Sparc/SparcISel
index 8057b39..04d05c4 100644
--- a/lib/Target/Sparc/SparcISelLowering.cpp
+++ b/lib/Target/Sparc/SparcISelLowering.cpp
@@ -1034,6 +1034,10 @@
SparcTargetLowering::LowerCall_64(TargetLowering::CallLow
SelectionDAG &DAG = CLI.DAG;
SDLoc DL = CLI.DL;
SDValue Chain = CLI.Chain;
+ bool &isTailCall = CLI.IsTailCall;
+
+ // Sparc target does not yet support tail call optimization.
+ isTailCall = false;</pre>
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