compiler crash using short vector reference inside an struct.

[MkazemAkhgary]

following code does not compile. this affects all ispc versions.

struct Foo
{
    int32<TARGET_WIDTH>& IntVec;
};
varying int32 test(uniform Foo& foo)
{
    foo.IntVec[programIndex] = 0; // ok
    return foo.IntVec[programIndex]; // crash
}

output

<source>:11:12: Error: Assertion failed 
        (/usr/local/src/ispc/src/ctx.cpp:2620): "llvmReturnType == 
        LLVMTypes::Int8VectorType". 
    return foo.IntVec[programIndex];
           ^^^^^^^^^^^^^^^^^^^^^^^^

/usr/local/src/ispc/src/main.cpp(404): FATAL ERROR: Unhandled signal sent to process; terminating.
Program terminated with signal: SIGSEGV
Compiler returned: 139

trying with foo.IntVec[0] crashes as well.

Stored value type does not match pointer operand type!
  store <8 x i32>* %32, i32* %7, align 8, !dbg !24060
 <8 x i32>*Stored value type does not match pointer operand type!
  store <8 x i32>* %53, i32* %7, align 8, !dbg !24064
 <8 x i32>*LLVM ERROR: Broken module found, compilation aborted!
/usr/local/src/ispc/src/main.cpp(404): FATAL ERROR: Unhandled signal sent to process; terminating.
Program terminated with signal: SIGSEGV
Compiler returned: 139

if short vector reference is not inside an struct, it works fine.

varying int32 test(uniform int32<TARGET_WIDTH>& IntVec)
{
    IntVec[programIndex] = 0;
    return IntVec[programIndex];
}

[pbrubaker]

struct Foo { int32<TARGET_WIDTH>& IntVec; };

References inside structs should be a compile error. Without a constructor there's no way for this to work.

[MkazemAkhgary]

struct Foo { int32<TARGET_WIDTH>& IntVec; };

References inside structs should be a compile error. Without a constructor there's no way for this to work.

references inside structs can be initialized from c++ side and passed to ispc.