[LLVMbugs] [Bug 10843] New: [AVX] Assertion failed: (Reg >= X86::FP0 && Reg <= X86::FP6 && "Expected FP register!"), function getFPReg

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=10843

           Summary: [AVX] Assertion failed: (Reg >= X86::FP0 && Reg <=
                    X86::FP6 && "Expected FP register!"), function
                    getFPReg
           Product: new-bugs
           Version: unspecified
          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=7206)
 --> (http://llvm.org/bugs/attachment.cgi?id=7206)
test case

With the attached and top-of-tree, I'm seeing the following crash:

% llc -O0 -mattr=+avx bug.bc -o /dev/null 
Assertion failed: (Reg >= X86::FP0 && Reg <= X86::FP6 && "Expected FP
register!"), function getFPReg, file X86FloatingPoint.cpp, line 331.
0  llc               0x0000000105f39082
llvm::PrettyStackTraceProgram::~PrettyStackTraceProgram() + 6504
1  llc               0x0000000105f39689
llvm::PrettyStackTraceProgram::~PrettyStackTraceProgram() + 8047
2  libsystem_c.dylib 0x00007fff885e8cfa _sigtramp + 26
3  libsystem_c.dylib 0x00000001062a2258 _sigtramp + 18446603342626657656
4  llc               0x0000000105f38fe6
llvm::PrettyStackTraceProgram::~PrettyStackTraceProgram() + 6348
5  llc               0x0000000105f39038
llvm::PrettyStackTraceProgram::~PrettyStackTraceProgram() + 6430
6  llc               0x0000000105932af2
llvm::EVT::getPow2VectorType(llvm::LLVMContext&) const + 22834
7  llc               0x0000000105933117
llvm::EVT::getPow2VectorType(llvm::LLVMContext&) const + 24407
8  llc               0x0000000105c18284
llvm::MachineFunctionAnalysis::getPassName() const + 458
9  llc               0x0000000105ea013d llvm::cl::parser<llvm::PassInfo
const*>::~parser() + 26675
10 llc               0x0000000105e9b6db llvm::cl::parser<llvm::PassInfo
const*>::~parser() + 7633
11 llc               0x0000000105e9fe3a llvm::cl::parser<llvm::PassInfo
const*>::~parser() + 25904
12 llc               0x0000000105ea1251 llvm::cl::parser<llvm::PassInfo
const*>::~parser() + 31047
13 llc               0x0000000105ea12d1 llvm::cl::parser<llvm::PassInfo
const*>::~parser() + 31175
14 llc               0x00000001058bd273
15 llc               0x00000001058bbb34
16 llc               0x0000000000000006
Stack dump:
0.    Program arguments: llc -O0 -mattr=+avx bug.bc -o /dev/null 
1.    Running pass 'Function Pass Manager' on module 'bug.bc'.
2.    Running pass 'X86 FP Stackifier' on function '@"f_fu___REFUf[]REFUf[]Uf"'
[1]    48775 illegal hardware instruction  llc -O0 -mattr=+avx bug.bc -o
/dev/null

Note that this is the same assertion that is hitting in
http://llvm.org/bugs/show_bug.cgi?id=10498, though there it's only when all of
the SSE feature bits are disabled, but here I'm seeing it with a regular AVX
target...

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