https://bugs.llvm.org/show_bug.cgi?id=41951
Bug ID: 41951
Summary: [AArch64] crash in isTRNMask()
Product: libraries
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: Backend: AArch64
Assignee: unassignedb...@nondot.org
Reporter: spatel+l...@rotateright.com
CC: arnaud.degrandmai...@arm.com,
llvm-bugs@lists.llvm.org, peter.sm...@linaro.org,
ties.st...@arm.com
define <4 x i32> @widen_shuffles_reduced(<3 x i32> %x, <3 x i32> %y) {
%s3 = shufflevector <3 x i32> %y, <3 x i32> %x, <4 x i32> <i32 1, i32 4, i32
3, i32 0>
ret <4 x i32> %s3
}
Using llc as of r361194:
$ llc -o - shuf.ll -mtriple=aarch64
.text
.file "shuf.ll"
Assertion failed: (Index < Length && "Invalid index!"), function operator[],
file /Users/spatel/GitHub/llvm-project/llvm/include/llvm/ADT/ArrayRef.h, line
240.
Stack dump:
0. Program arguments: ./llc -o - shuf.ll -mtriple=aarch64
1. Running pass 'Function Pass Manager' on module 'shuf.ll'.
2. Running pass 'AArch64 Instruction Selection' on function
'@widen_shuffles_reduced'
0 llc 0x000000010948aa58
llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 40
1 llc 0x0000000109489948 llvm::sys::RunSignalHandlers() +
248
2 llc 0x000000010948b078 SignalHandler(int) + 264
3 libsystem_platform.dylib 0x00007fff5c7dfb3d _sigtramp + 29
4 libsystem_platform.dylib 0x00007fb92b880810 _sigtramp + 3473542384
5 libsystem_c.dylib 0x00007fff5c69d1c9 abort + 127
6 libsystem_c.dylib 0x00007fff5c665868 basename_r + 0
7 llc 0x00000001077c2946 isTRNMask(llvm::ArrayRef<int>,
llvm::EVT, unsigned int&) + 230
8 llc 0x00000001077c491a
llvm::AArch64TargetLowering::isShuffleMaskLegal(llvm::ArrayRef<int>, llvm::EVT)
const + 362
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