[LLVMbugs] [Bug 10689] New: [AVX] Assertion failed: (Num < NumOperands && "Invalid child # of SDNode!"),

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=10689

           Summary: [AVX] Assertion failed: (Num < NumOperands && "Invalid
                    child # of SDNode!"),
           Product: new-bugs
           Version: trunk
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: matt at pharr.org
                CC: llvmbugs at cs.uiuc.edu


Created an attachment (id=7086)
 --> (http://llvm.org/bugs/attachment.cgi?id=7086)
test case

With top-of-tree, if I run llc -mattr=+avx on the attached, I get the following
crash:


Assertion failed: (Num < NumOperands && "Invalid child # of SDNode!"), function
getOperand, file
/Users/mmp/llvm-dev-src/include/llvm/CodeGen/SelectionDAGNodes.h, line 534.
0  llc               0x000000010b1b8a22
llvm::PrettyStackTraceProgram::~PrettyStackTraceProgram() + 6494
1  llc               0x000000010b1b9029
llvm::PrettyStackTraceProgram::~PrettyStackTraceProgram() + 8037
2  libsystem_c.dylib 0x00007fff86a09cfa _sigtramp + 26
3  libsystem_c.dylib 0x0000000000000010 _sigtramp + 18446603338257490736
4  llc               0x000000010b1b8986
llvm::PrettyStackTraceProgram::~PrettyStackTraceProgram() + 6338
5  llc               0x000000010b1b89d8
llvm::PrettyStackTraceProgram::~PrettyStackTraceProgram() + 6420
6  llc               0x000000010ac05a6a llvm::X86Subtarget::isTargetELF() const
+ 214978
7  llc               0x000000010abe7d35 llvm::X86Subtarget::isTargetELF() const
+ 92813
8  llc               0x000000010ad13855 std::vector<llvm::SDValue,
std::allocator<llvm::SDValue> >::reserve(unsigned long) + 3057
9  llc               0x000000010ad12dc1 std::vector<llvm::SDValue,
std::allocator<llvm::SDValue> >::reserve(unsigned long) + 349
10 llc               0x000000010adbfcad llvm::SelectionDAGBuilder::Case::size()
const + 33897
11 llc               0x000000010adc1c92 llvm::SelectionDAGBuilder::Case::size()
const + 42062
12 llc               0x000000010adc28eb llvm::SelectionDAGBuilder::Case::size()
const + 45223
13 llc               0x000000010ae9e034
llvm::MachineFunctionAnalysis::getPassName() const + 458
14 llc               0x000000010b11f95d llvm::cl::parser<llvm::PassInfo
const*>::~parser() + 26355
15 llc               0x000000010b11b33b llvm::cl::parser<llvm::PassInfo
const*>::~parser() + 8401
16 llc               0x000000010b11f65a llvm::cl::parser<llvm::PassInfo
const*>::~parser() + 25584
17 llc               0x000000010b120a81 llvm::cl::parser<llvm::PassInfo
const*>::~parser() + 30743
18 llc               0x000000010b120b01 llvm::cl::parser<llvm::PassInfo
const*>::~parser() + 30871
19 llc               0x000000010a88b9e3
20 llc               0x000000010a88a234
21 llc               0x0000000000000003
Stack dump:
0.    Program arguments: /Users/mmp/llvm-dev/bin/llc -mattr=+avx bug.bc 
1.    Running pass 'Function Pass Manager' on module 'bug.bc'.
2.    Running pass 'X86 DAG->DAG Instruction Selection' on function
'@"result___REFUf[]"'
[1]    61517 illegal hardware instruction  ~/llvm-dev/bin/llc -mattr=+avx
bug.bc

As it turns out, running bugpoint on the attached gives a different crash,
which I've reported separately in http://llvm.org/bugs/show_bug.cgi?id=10688

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