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<base href="http://llvm.org/bugs/" />
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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 --- - AArch64: Assertion failed: (isSimple() && "Expected a SimpleValueType!"), function getSimpleVT"
href="http://llvm.org/bugs/show_bug.cgi?id=20791">20791</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>AArch64: Assertion failed: (isSimple() && "Expected a SimpleValueType!"), function getSimpleVT
</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>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Backend: AArch64
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>grosbach@apple.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
target triple = "arm64-apple-ios5.0.0"
define void @autogen_SD7918() {
BB:
br label %CF78
CF78: ; preds = %CF78, %BB
br i1 undef, label %CF78, label %CF
CF: ; preds = %CF, %CF78
%I29 = insertelement <1 x i1> zeroinitializer, i1 false, i32 0
%ZE = zext <1 x i1> %I29 to <1 x i32>
br i1 undef, label %CF, label %CF76
CF76: ; preds = %CF76, %CF
%B37 = sdiv <1 x i32> %ZE, %ZE
br label %CF76
}
$ llc -o - -mtriple=arm64-apple-darwin test-7918.ll
.section __TEXT,__text,regular,pure_instructions
Assertion failed: (isSimple() && "Expected a SimpleValueType!"), function
getSimpleVT, file
/Users/grosbaj/sources/llvm/include/llvm/CodeGen/ValueTypes.h, line 205.
0 llc 0x000000010b0937be
llvm::sys::PrintStackTrace(__sFILE*) + 46
1 llc 0x000000010b093acb
PrintStackTraceSignalHandler(void*) + 27
2 llc 0x000000010b093e8c SignalHandler(int) + 460
3 libsystem_platform.dylib 0x00007fff882fef1a _sigtramp + 26
4 llc 0x000000010ba3da9e guard variable for
llvm::BitcodeErrorCategory()::O + 69646
5 llc 0x000000010b093afb raise + 27
6 llc 0x000000010b093bb2 abort + 18
7 llc 0x000000010b093b91 __assert_rtn + 129
8 llc 0x000000010af96f7d llvm::EVT::getSimpleVT() const +
109
9 llc 0x0000000109a2ad24
performExtendCombine(llvm::SDNode*, llvm::TargetLowering::DAGCombinerInfo&,
llvm::SelectionDAG&) + 676
10 llc 0x0000000109a288d9
llvm::AArch64TargetLowering::PerformDAGCombine(llvm::SDNode*,
llvm::TargetLowering::DAGCombinerInfo&) const + 761
11 llc 0x000000010ad0d189 (anonymous
namespace)::DAGCombiner::combine(llvm::SDNode*) + 345
12 llc 0x000000010ad0c84d (anonymous
namespace)::DAGCombiner::Run(llvm::CombineLevel) + 1197
13 llc 0x000000010ad0c328
llvm::SelectionDAG::Combine(llvm::CombineLevel, llvm::AliasAnalysis&,
llvm::CodeGenOpt::Level) + 104
...
The custom lowering for the extend is assuming that if the destination type is
a simple type, then so is the source type. That's obviously not true, as the
testcase demonstrates.</pre>
</div>
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