<html>
<head>
<base href="http://bugs.llvm.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Crash in LoopUnrollPeel"
href="http://bugs.llvm.org/show_bug.cgi?id=32277">32277</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Crash in LoopUnrollPeel
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Loop Optimizer
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>james.molloy@arm.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org, sanjoy@playingwithpointers.com
</td>
</tr></table>
<p>
<div>
<pre>After the series of commits by Sanjoy on 3rd March, the following testcase
causes a crash:
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
target triple = "armv7r-arm-none-eabi"
define hidden arm_aapcs_vfpcc i32 @test(i32 %j, i32 %k, i32 %recurs) {
entry:
%cmp = icmp eq i32 %j, 0
br label %bb2
bb2: ; preds = %entry, %bb12
%k.addr.0 = phi i32 [ %k.addr.2, %bb12 ], [ %k, %entry ]
%result.0 = phi i32 [ 20, %bb12 ], [ 0, %entry ]
br i1 %cmp, label %bb12, label %bb4
bb4: ; preds = %bb12, %bb2
%k.addr.1 = phi i32 [ %k.addr.0, %bb2 ], [ %k.addr.2, %bb12 ]
%x.1 = phi i32 [ 0, %bb2 ], [ %x.2, %bb12 ]
%result.1 = phi i32 [ %result.0, %bb2 ], [ 10, %bb12 ]
%cmp2 = icmp eq i32 %k.addr.1, 0
br i1 %cmp2, label %bb13, label %bb12
bb12: ; preds = %bb4, %bb2
%k.addr.2 = phi i32 [ %k.addr.0, %bb2 ], [ 0, %bb4 ]
%x.2 = phi i32 [ 1, %bb2 ], [ %x.1, %bb4 ]
%cmp5 = icmp eq i32 %x.2, 0
br i1 %cmp5, label %bb2, label %bb4
bb13: ; preds = %bb4
ret i32 %result.1
}
Run with "opt -O1 test.ll -disable-output":
opt: ../include/llvm/IR/Instructions.h:2715: llvm::Value
*llvm::PHINode::getIncomingValueForBlock(const llvm::BasicBlock *) const:
Assertion `Idx >= 0 && "Invalid basic block argument!"' failed.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>