[LLVMdev] r114523 (convert the last 4 X86ISD...) breaks clang

[Jean-Daniel Dupas]

Hello,

After commit r114523, I start to get crash when compiling with clang (Release+Asserts) for i386:
(I know I should fill a bug report instead of posting here, but I don't get much time right now).

Trying to compile the following simple code, clang asserts.

---------- round.c --------
#include <math.h>
float test() { return llround(1); }
--------------------

[MacPro:~/Desktop] jddupas% clang -arch i386 -c round.c
Assertion failed: (memvt.getStoreSize() == MMO->getSize() && "Size mismatch!"), function MemSDNode, file /Volumes/MacPro/Projects/OpenSource/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp, line 5393.
0  clang             0x0000000100df5422 PrintStackTrace(void*) + 34
1  clang             0x0000000100df5999 SignalHandler(int) + 841
2  libSystem.B.dylib 0x00007fff8062d35a _sigtramp + 26
3  libSystem.B.dylib 0x0000000101612d10 _sigtramp + 2164152784
4  clang             0x0000000100018aa6 abort + 22
5  clang             0x0000000100018a68 __assert_rtn + 56
6  clang             0x000000010093a64e llvm::MemSDNode::MemSDNode(unsigned int, llvm::DebugLoc, llvm::SDVTList, llvm::SDValue const*, unsigned int, llvm::EVT, llvm::MachineMemOperand*) + 190
7  clang             0x0000000100933ec7 llvm::SelectionDAG::getMemIntrinsicNode(unsigned int, llvm::DebugLoc, llvm::SDVTList, llvm::SDValue const*, unsigned int, llvm::EVT, llvm::MachineMemOperand*) + 519
8  clang             0x0000000100722db4 llvm::X86TargetLowering::BuildFILD(llvm::SDValue, llvm::EVT, llvm::SDValue, llvm::SDValue, llvm::SelectionDAG&) const + 1380
9  clang             0x0000000100722759 llvm::X86TargetLowering::LowerSINT_TO_FP(llvm::SDValue, llvm::SelectionDAG&) const + 1017
10 clang             0x0000000100978b9b llvm::TargetLowering::LowerOperationWrapper(llvm::SDNode*, llvm::SmallVectorImpl<llvm::SDValue>&, llvm::SelectionDAG&) const + 27
11 clang             0x00000001008d63e4 llvm::DAGTypeLegalizer::CustomLowerNode(llvm::SDNode*, llvm::EVT, bool) + 164
12 clang             0x00000001008cd718 llvm::DAGTypeLegalizer::ExpandIntegerOperand(llvm::SDNode*, unsigned int) + 280
13 clang             0x00000001008d290f llvm::DAGTypeLegalizer::run() + 991
14 clang             0x00000001008d87b8 llvm::SelectionDAG::LegalizeTypes() + 40
15 clang             0x0000000100981f88 llvm::SelectionDAGISel::CodeGenAndEmitDAG() + 1192
16 clang             0x000000010098129f llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) + 367
17 clang             0x00000001009804a9 llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) + 569
18 clang             0x0000000100a3f60d llvm::MachineFunctionPass::runOnFunction(llvm::Function&) + 61
19 clang             0x0000000100d7e766 llvm::FPPassManager::runOnFunction(llvm::Function&) + 310
20 clang             0x0000000100d7ea3b llvm::FPPassManager::runOnModule(llvm::Module&) + 75
21 clang             0x0000000100d7eba9 llvm::MPPassManager::runOnModule(llvm::Module&) + 313
22 clang             0x0000000100d7f12c llvm::PassManagerImpl::run(llvm::Module&) + 172
23 clang             0x0000000100d7f6cd llvm::PassManager::run(llvm::Module&) + 13
24 clang             0x0000000100119d96 clang::EmitBackendOutput(clang::Diagnostic&, clang::CodeGenOptions const&, clang::TargetOptions const&, llvm::Module*, clang::BackendAction, llvm::raw_ostream*) + 4982
25 clang             0x00000001001f855e (anonymous namespace)::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) + 270
26 clang             0x000000010022a4de clang::ParseAST(clang::Sema&, bool) + 750
27 clang             0x00000001001f7df7 clang::CodeGenAction::ExecuteAction() + 823
28 clang             0x000000010003f9d9 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 857
29 clang             0x00000001000209c4 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 2724
30 clang             0x000000010001a131 cc1_main(char const**, char const**, char const*, void*) + 5313
31 clang             0x000000010001d2cd main + 765
32 clang             0x0000000100018c64 start + 52
33 clang             0x0000000000000021 start + 4294865905
Stack dump:
0.	Program arguments: /Volumes/MacPro/Projects/OpenSource/llvm/release/Release+Asserts/bin/clang -cc1 -triple i386-apple-darwin10.0.0 -emit-obj -mrelax-all -disable-free -main-file-name round.c -pic-level 1 -mdisable-fp-elim -masm-verbose -target-cpu yonah -target-linker-version 97.14 -resource-dir /Volumes/MacPro/Projects/OpenSource/llvm/release/Release+Asserts/lib/clang/2.9 -ferror-limit 19 -fmessage-length 180 -stack-protector 1 -fblocks -fdiagnostics-show-option -fcolor-diagnostics -o round.o -x c round.c 
1.	<eof> parser at end of file
2.	Code generation
3.	Running pass 'Function Pass Manager' on module 'round.c'.
4.	Running pass 'X86 DAG->DAG Instruction Selection' on function '@test'
clang: error: clang frontend command failed due to signal 4 (use -v to see invocation)

-- Jean-Daniel

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