[LLVMbugs] [Bug 10844] New: [AVX] Cannot select: v8f32 = X86ISD::VZEXT_MOVL

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Fri Sep 2 14:32:55 PDT 2011


           Summary: [AVX] Cannot select: v8f32 = X86ISD::VZEXT_MOVL
           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=7207)
 --> (http://llvm.org/bugs/attachment.cgi?id=7207)
test case

With the attached test case, I'm seeing the following crash:

% llc -O0 bug.bc -filetype=obj -o x.o -mattr=+avx 
LLVM ERROR: Cannot select: 0x7fd50907a310: v8f32 = X86ISD::VZEXT_MOVL
0x7fd50907ab10 [ID=96]
  0x7fd50907ab10: v8f32 = insert_subvector 0x7fd50907aa10, 0x7fd50907a910,
0x7fd50902f410 [ID=91]
    0x7fd50907aa10: v8f32 = undef [ID=35]
    0x7fd50907a910: v4f32 = scalar_to_vector 0x7fd509029e10 [ID=85]
      0x7fd509029e10: f32,ch = load 0x10dfe7bd8, 0x7fd509027d10,
0x7fd50902ed10<LD4[ConstantPool]> [ID=75]
        0x7fd509027d10: i64 = X86ISD::WrapperRIP 0x7fd509028010 [ID=50]
          0x7fd509028010: i64 = TargetConstantPool<float 0xFFFFFFFFE0000000> 0
        0x7fd50902ed10: i64 = undef [ORD=181] [ID=3]
    0x7fd50902f410: i32 = Constant<0> [ORD=185] [ID=8]

(If I try to reduce it to a simpler test case with bugpoint, then it ends up
reducing it to something that hits 10842 or 10843.)

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