| Issue |
148347
|
| Summary |
[AArch64] Cannot select: PTRUE TargetConstant:i32<4>
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
sjoerdmeijer
|
Compiling this:
```
extern char a[][3][8];
void b(bool c) {
for (;;)
for (short d = 1; d < 6; d += 38772)
for (short e = 1; e < c + 15; e += 4)
a[0][2][e] = 0;
}
```
with this:
```
-O3 -mcpu=grace t.cpp
```
results in:
```
fatal error: error in backend: Cannot select: 0x28168230: v8i8 = AArch64ISD::PTRUE TargetConstant:i32<4>
In function: _Z1bb
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0. Program arguments: /opt/compiler-explorer/clang-trunk/bin/clang++ -gdwarf-4 -g -o /app/output.s -fno-verbose-asm -S -target aarch64-linux-gnu --gcc-toolchain=/opt/compiler-explorer/arm64/gcc-12.2.0/aarch64-unknown-linux-gnu --sysroot=/opt/compiler-explorer/arm64/gcc-12.2.0/aarch64-unknown-linux-gnu/aarch64-unknown-linux-gnu/sysroot -fcolor-diagnostics -fno-crash-diagnostics -O3 -mcpu=grace <source>
1. <eof> parser at end of file
2. Code generation
3. Running pass 'Function Pass Manager' on module '<source>'.
4. Running pass 'AArch64 Instruction Selection' on function '@_Z1bb'
#0 0x0000000003c7a1b8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3c7a1b8)
#1 0x0000000003c77b8c llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3c77b8c)
#2 0x0000000003bc83d3 llvm::CrashRecoveryContext::HandleExit(int) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3bc83d3)
#3 0x0000000003c6f3de llvm::sys::Process::Exit(int, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3c6f3de)
#4 0x0000000000da499b LLVMErrorHandler(void*, char const*, bool) cc1_main.cpp:0:0
#5 0x0000000003bd2303 llvm::report_fatal_error(llvm::Twine const&, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3bd2303)
#6 0x000000000524118a llvm::SelectionDAGISel::CannotYetSelect(llvm::SDNode*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x524118a)
#7 0x0000000005247061 llvm::SelectionDAGISel::SelectCodeCommon(llvm::SDNode*, unsigned char const*, unsigned int) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x5247061)
#8 0x0000000000f48fd7 (anonymous namespace)::AArch64DAGToDAGISel::Select(llvm::SDNode*) AArch64ISelDAGToDAG.cpp:0:0
```
See also:
https://godbolt.org/z/r38qsM7Pv
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