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<base href="https://bugs.llvm.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Crash in statepoint lowering after 297695"
href="https://bugs.llvm.org/show_bug.cgi?id=33010">33010</a>
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<th>Summary</th>
<td>Crash in statepoint lowering after 297695
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Backend: X86
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>sanjoy@playingwithpointers.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
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<pre>After 297695, the following code causes llc to crash:
declare void @f()
define i32 addrspace(1)* @test(i32 addrspace(1)* %a, i32 addrspace(1)* %b, i1
%which) gc "statepoint-example" {
entry:
%tok = tail call token (i64, i32, void ()*, i32, i32, ...)
@llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @f, i32 0,
i32 0, i32 0, i32 0, i32 addrspace(1)* %a, i32 addrspace(1)* %b)
%a.r = tail call coldcc i8 addrspace(1)*
@llvm.experimental.gc.relocate.p1i8(token %tok, i32 7, i32 7) ; (%a, %a)
%b.r = tail call coldcc i8 addrspace(1)*
@llvm.experimental.gc.relocate.p1i8(token %tok, i32 8, i32 8) ; (%b, %b)
%cond.v = select i1 %which, i8 addrspace(1)* %a.r, i8 addrspace(1)* %b.r
%cond = bitcast i8 addrspace(1)* %cond.v to i32 addrspace(1)*
ret i32 addrspace(1)* %cond
}
declare token @llvm.experimental.gc.statepoint.p0f_isVoidf(i64, i32, void ()*,
i32, i32, ...)
declare i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token, i32, i32)</pre>
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