[LLVMdev] Bad legalization?

[Villmow, Micah]

I am getting an assert on a bad legalization.

Assertion failed: Result.getValueType() == Op.getValueType() && "Bad
legalization!", file ..\..\lib\CodeGen\SelectionDAG\LegalizeDAG.cpp,
line 3976

 

Can someone explain to me what this means in term of backend code
generation, how it might be occurring, and possible ways to fix this? I
don't see how the value type of an operation and the result being the
same can cause an issue.

The IR code in question is as follows:

 

define void @ test_unary_func_absolute_value(i32 %x, i32 addrspace(11)*
%result) {

entry:

        %call = tail call i32 (...)* @abs( i32 %x )             ; <i32>
[#uses=1]

        store i32 %call, i32 addrspace(11)* %result

        ret void

}

 

declare i32 @abs(...)

 

Micah Villmow

Systems Engineer

Advanced Technology & Performance

Advanced Micro Devices Inc.

4555 Great America Pkwy,

Santa Clara, CA. 95054

P: 408-572-6219

F: 408-572-6596

 

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