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selectiondagbuild
2011 Feb 14
1
[LLVMdev] broken alignment in stack(caused by bug in SelectionDAGBuilder) causes invalid schedules with r125471 and newer
...by 4, not by 8(which MFI thinks about it's alignment)
Two solutions come into my mind:
1) changiing the SelectionDAGBuilder to use std::min(StackAlignment, PreferredAlignment) instead of PreferredAlignment. This might require asserting (StackAlignment <= ABI alignment).
2) changing the SelectionAGBuilder to use ABI alignment instead of the preferred alignment for the stack objects.
The affected code lines are around 4820, and 5694 of SelectionDAGBuilder.cpp