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Compiler crash when targeting mips64 when returning fp128 after calling a function returning { i8, i128 } #96432

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beetrees opened this issue Jun 23, 2024 · 1 comment
Open

Compiler crash when targeting mips64 when returning fp128 after calling a function returning { i8, i128 } #96432

beetrees opened this issue Jun 23, 2024 · 1 comment
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backend:MIPS crash Prefer [crash-on-valid] or [crash-on-invalid]

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@beetrees
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Attempting to compiler the following IR causes LLVM to crash (compiler explorer):

target triple = "mips64el-unknown-linux-gnuabi64"

define fp128 @foo() {
  call { i8, i128 } @bar()
  ret fp128 0xL00000000000000000000000000000000
}

define { i8, i128 } @bar() {
  ret { i8, i128 } zeroinitializer
}

Crash backtrace:

PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0.	Program arguments: /opt/compiler-explorer/clang-trunk/bin/llc -o /app/output.s -x86-asm-syntax=intel <source>
1.	Running pass 'Function Pass Manager' on module '<source>'.
2.	Running pass 'MIPS DAG->DAG Pattern Instruction Selection' on function '@foo'
 #0 0x0000000003739428 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-trunk/bin/llc+0x3739428)
 #1 0x0000000003736dac SignalHandler(int) Signals.cpp:0:0
 #2 0x0000718fcb642520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #3 0x00000000034c3bb3 llvm::SelectionDAG::FoldConstantArithmetic(unsigned int, llvm::SDLoc const&, llvm::EVT, llvm::ArrayRef<llvm::SDValue>, llvm::SDNodeFlags) (/opt/compiler-explorer/clang-trunk/bin/llc+0x34c3bb3)
 #4 0x00000000034c79f4 llvm::SelectionDAG::getNode(unsigned int, llvm::SDLoc const&, llvm::EVT, llvm::SDValue, llvm::SDNodeFlags) (/opt/compiler-explorer/clang-trunk/bin/llc+0x34c79f4)
 #5 0x0000000003430a84 getCopyFromParts(llvm::SelectionDAG&, llvm::SDLoc const&, llvm::SDValue const*, unsigned int, llvm::MVT, llvm::EVT, llvm::Value const*, llvm::SDValue, std::optional<unsigned int>, std::optional<llvm::ISD::NodeType>) (.isra.0) SelectionDAGBuilder.cpp:0:0
 #6 0x000000000343fb56 llvm::TargetLowering::LowerCallTo(llvm::TargetLowering::CallLoweringInfo&) const (/opt/compiler-explorer/clang-trunk/bin/llc+0x343fb56)
 #7 0x000000000344172d llvm::SelectionDAGBuilder::lowerInvokable(llvm::TargetLowering::CallLoweringInfo&, llvm::BasicBlock const*) (/opt/compiler-explorer/clang-trunk/bin/llc+0x344172d)
 #8 0x0000000003462354 llvm::SelectionDAGBuilder::LowerCallTo(llvm::CallBase const&, llvm::SDValue, bool, bool, llvm::BasicBlock const*, llvm::TargetLowering::PtrAuthInfo const*) (/opt/compiler-explorer/clang-trunk/bin/llc+0x3462354)
 #9 0x0000000003478998 llvm::SelectionDAGBuilder::visitCall(llvm::CallInst const&) (/opt/compiler-explorer/clang-trunk/bin/llc+0x3478998)
#10 0x000000000348d487 llvm::SelectionDAGBuilder::visit(llvm::Instruction const&) (/opt/compiler-explorer/clang-trunk/bin/llc+0x348d487)
#11 0x0000000003505a53 llvm::SelectionDAGISel::SelectBasicBlock(llvm::ilist_iterator_w_bits<llvm::ilist_detail::node_options<llvm::Instruction, false, false, void, true, llvm::BasicBlock>, false, true>, llvm::ilist_iterator_w_bits<llvm::ilist_detail::node_options<llvm::Instruction, false, false, void, true, llvm::BasicBlock>, false, true>, bool&) (/opt/compiler-explorer/clang-trunk/bin/llc+0x3505a53)
#12 0x0000000003507124 llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) (/opt/compiler-explorer/clang-trunk/bin/llc+0x3507124)
#13 0x0000000003508f94 llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) (/opt/compiler-explorer/clang-trunk/bin/llc+0x3508f94)
#14 0x00000000015c3c1b llvm::MipsDAGToDAGISel::runOnMachineFunction(llvm::MachineFunction&) (/opt/compiler-explorer/clang-trunk/bin/llc+0x15c3c1b)
#15 0x00000000034f8ac1 llvm::SelectionDAGISelLegacy::runOnMachineFunction(llvm::MachineFunction&) (/opt/compiler-explorer/clang-trunk/bin/llc+0x34f8ac1)
#16 0x000000000283368b llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (.part.0) MachineFunctionPass.cpp:0:0
#17 0x0000000002d72152 llvm::FPPassManager::runOnFunction(llvm::Function&) (/opt/compiler-explorer/clang-trunk/bin/llc+0x2d72152)
#18 0x0000000002d722d1 llvm::FPPassManager::runOnModule(llvm::Module&) (/opt/compiler-explorer/clang-trunk/bin/llc+0x2d722d1)
#19 0x0000000002d73f80 llvm::legacy::PassManagerImpl::run(llvm::Module&) (/opt/compiler-explorer/clang-trunk/bin/llc+0x2d73f80)
#20 0x0000000000846ed4 compileModule(char**, llvm::LLVMContext&) llc.cpp:0:0
#21 0x000000000073ece6 main (/opt/compiler-explorer/clang-trunk/bin/llc+0x73ece6)
#22 0x0000718fcb629d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#23 0x0000718fcb629e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#24 0x000000000083eb0e _start (/opt/compiler-explorer/clang-trunk/bin/llc+0x83eb0e)
@beetrees beetrees mentioned this issue Jun 23, 2024
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@dtcxzyw dtcxzyw added backend:MIPS crash Prefer [crash-on-valid] or [crash-on-invalid] and removed new issue labels Jun 23, 2024
@llvmbot
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llvmbot commented Jun 23, 2024

@llvm/issue-subscribers-backend-mips

Author: None (beetrees)

Attempting to compiler the following IR causes LLVM to crash ([compiler explorer](https://godbolt.org/z/cqKz4Ybxb)): 
target triple = "mips64el-unknown-linux-gnuabi64"

define fp128 @<!-- -->foo() {
  call { i8, i128 } @<!-- -->bar()
  ret fp128 0xL00000000000000000000000000000000
}

define { i8, i128 } @<!-- -->bar() {
  ret { i8, i128 } zeroinitializer
}

Crash backtrace:

PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0.	Program arguments: /opt/compiler-explorer/clang-trunk/bin/llc -o /app/output.s -x86-asm-syntax=intel &lt;source&gt;
1.	Running pass 'Function Pass Manager' on module '&lt;source&gt;'.
2.	Running pass 'MIPS DAG-&gt;DAG Pattern Instruction Selection' on function '@<!-- -->foo'
 #<!-- -->0 0x0000000003739428 llvm::sys::PrintStackTrace(llvm::raw_ostream&amp;, int) (/opt/compiler-explorer/clang-trunk/bin/llc+0x3739428)
 #<!-- -->1 0x0000000003736dac SignalHandler(int) Signals.cpp:0:0
 #<!-- -->2 0x0000718fcb642520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #<!-- -->3 0x00000000034c3bb3 llvm::SelectionDAG::FoldConstantArithmetic(unsigned int, llvm::SDLoc const&amp;, llvm::EVT, llvm::ArrayRef&lt;llvm::SDValue&gt;, llvm::SDNodeFlags) (/opt/compiler-explorer/clang-trunk/bin/llc+0x34c3bb3)
 #<!-- -->4 0x00000000034c79f4 llvm::SelectionDAG::getNode(unsigned int, llvm::SDLoc const&amp;, llvm::EVT, llvm::SDValue, llvm::SDNodeFlags) (/opt/compiler-explorer/clang-trunk/bin/llc+0x34c79f4)
 #<!-- -->5 0x0000000003430a84 getCopyFromParts(llvm::SelectionDAG&amp;, llvm::SDLoc const&amp;, llvm::SDValue const*, unsigned int, llvm::MVT, llvm::EVT, llvm::Value const*, llvm::SDValue, std::optional&lt;unsigned int&gt;, std::optional&lt;llvm::ISD::NodeType&gt;) (.isra.0) SelectionDAGBuilder.cpp:0:0
 #<!-- -->6 0x000000000343fb56 llvm::TargetLowering::LowerCallTo(llvm::TargetLowering::CallLoweringInfo&amp;) const (/opt/compiler-explorer/clang-trunk/bin/llc+0x343fb56)
 #<!-- -->7 0x000000000344172d llvm::SelectionDAGBuilder::lowerInvokable(llvm::TargetLowering::CallLoweringInfo&amp;, llvm::BasicBlock const*) (/opt/compiler-explorer/clang-trunk/bin/llc+0x344172d)
 #<!-- -->8 0x0000000003462354 llvm::SelectionDAGBuilder::LowerCallTo(llvm::CallBase const&amp;, llvm::SDValue, bool, bool, llvm::BasicBlock const*, llvm::TargetLowering::PtrAuthInfo const*) (/opt/compiler-explorer/clang-trunk/bin/llc+0x3462354)
 #<!-- -->9 0x0000000003478998 llvm::SelectionDAGBuilder::visitCall(llvm::CallInst const&amp;) (/opt/compiler-explorer/clang-trunk/bin/llc+0x3478998)
#<!-- -->10 0x000000000348d487 llvm::SelectionDAGBuilder::visit(llvm::Instruction const&amp;) (/opt/compiler-explorer/clang-trunk/bin/llc+0x348d487)
#<!-- -->11 0x0000000003505a53 llvm::SelectionDAGISel::SelectBasicBlock(llvm::ilist_iterator_w_bits&lt;llvm::ilist_detail::node_options&lt;llvm::Instruction, false, false, void, true, llvm::BasicBlock&gt;, false, true&gt;, llvm::ilist_iterator_w_bits&lt;llvm::ilist_detail::node_options&lt;llvm::Instruction, false, false, void, true, llvm::BasicBlock&gt;, false, true&gt;, bool&amp;) (/opt/compiler-explorer/clang-trunk/bin/llc+0x3505a53)
#<!-- -->12 0x0000000003507124 llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&amp;) (/opt/compiler-explorer/clang-trunk/bin/llc+0x3507124)
#<!-- -->13 0x0000000003508f94 llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&amp;) (/opt/compiler-explorer/clang-trunk/bin/llc+0x3508f94)
#<!-- -->14 0x00000000015c3c1b llvm::MipsDAGToDAGISel::runOnMachineFunction(llvm::MachineFunction&amp;) (/opt/compiler-explorer/clang-trunk/bin/llc+0x15c3c1b)
#<!-- -->15 0x00000000034f8ac1 llvm::SelectionDAGISelLegacy::runOnMachineFunction(llvm::MachineFunction&amp;) (/opt/compiler-explorer/clang-trunk/bin/llc+0x34f8ac1)
#<!-- -->16 0x000000000283368b llvm::MachineFunctionPass::runOnFunction(llvm::Function&amp;) (.part.0) MachineFunctionPass.cpp:0:0
#<!-- -->17 0x0000000002d72152 llvm::FPPassManager::runOnFunction(llvm::Function&amp;) (/opt/compiler-explorer/clang-trunk/bin/llc+0x2d72152)
#<!-- -->18 0x0000000002d722d1 llvm::FPPassManager::runOnModule(llvm::Module&amp;) (/opt/compiler-explorer/clang-trunk/bin/llc+0x2d722d1)
#<!-- -->19 0x0000000002d73f80 llvm::legacy::PassManagerImpl::run(llvm::Module&amp;) (/opt/compiler-explorer/clang-trunk/bin/llc+0x2d73f80)
#<!-- -->20 0x0000000000846ed4 compileModule(char**, llvm::LLVMContext&amp;) llc.cpp:0:0
#<!-- -->21 0x000000000073ece6 main (/opt/compiler-explorer/clang-trunk/bin/llc+0x73ece6)
#<!-- -->22 0x0000718fcb629d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#<!-- -->23 0x0000718fcb629e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#<!-- -->24 0x000000000083eb0e _start (/opt/compiler-explorer/clang-trunk/bin/llc+0x83eb0e)

@beetrees beetrees mentioned this issue Aug 2, 2024
Merged
alexrp added a commit to alexrp/zig that referenced this issue Aug 13, 2024
@alexrp
llvm: Disable f128 on mips64(el).
1a0a851 
llvm/llvm-project#96432
alexrp added a commit to alexrp/zig that referenced this issue Aug 14, 2024
@alexrp
llvm: Disable f128 on mips64(el).
2f101e2 
llvm/llvm-project#96432
richerfu pushed a commit to richerfu/zig that referenced this issue Oct 28, 2024
@alexrp @richerfu
llvm: Disable f128 on mips64(el).
61e6009 
llvm/llvm-project#96432
@beetrees beetrees mentioned this issue Nov 3, 2024
Merged
tgross35 added a commit to tgross35/rust that referenced this issue Nov 3, 2024
@tgross35
Enable f128 tests on all non-buggy platforms 🎉
898ecf0 
With the `compiler-builtins` update to 0.1.137 [1], we now provide
symbols necessary to work with `f128` everywhere. This means that we are
no longer restricted to 64-bit linux, and can enable tests by default.

There are still a handful of platforms that need to remain disabled
because of bugs. This patch additionally disables the following:

1. MIPS [2]
2. 32-bit x86 [3]

Math support is still off by default since those symbols are not yet
available.

[1]: rust-lang#132433
[2]: llvm/llvm-project#96432
[3]: llvm/llvm-project#77401
tgross35 added a commit to tgross35/rust that referenced this issue Nov 4, 2024
@tgross35
Enable f128 tests on all non-buggy platforms 🎉
172c4f2 
With the `compiler-builtins` update to 0.1.137 [1], we now provide
symbols necessary to work with `f128` everywhere. This means that we are
no longer restricted to 64-bit linux, and can enable tests by default.

There are still a handful of platforms that need to remain disabled
because of bugs. This patch additionally disables the following:

1. MIPS [2]
2. 32-bit x86 [3]

Math support is still off by default since those symbols are not yet
available.

[1]: rust-lang#132433
[2]: llvm/llvm-project#96432
[3]: llvm/llvm-project#77401
tgross35 added a commit to tgross35/rust that referenced this issue Nov 4, 2024
@tgross35
Enable f128 tests on all non-buggy platforms 🎉
c0fc25c 
With the `compiler-builtins` update to 0.1.137 [1], we now provide
symbols necessary to work with `f128` everywhere. This means that we are
no longer restricted to 64-bit linux, and can enable tests by default.

There are still a handful of platforms that need to remain disabled
because of bugs. This patch additionally disables the following:

1. MIPS [2]
2. 32-bit x86 [3]

Math support is still off by default since those symbols are not yet
available.

[1]: rust-lang#132433
[2]: llvm/llvm-project#96432
[3]: llvm/llvm-project#77401
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@dtcxzyw @llvmbot @beetrees