C++: Connect InitializeIndirection to UnmodeledDefinition
#3255
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The IR generation for `InitializeIndirection` currently connects its load operand to the result of the corresponding `InitializeParameter` instruction. This isn't exactly wrong, but it doesn't fit the IR invariant of "All unmodeled uses consume `UnmodeledDefinition`". Our current code doesn't care, because we just throw away all of the existing def-use information, modeled or otherwise, when we build unaliased SSA. However, some upcoming SSA changes don't work correctly if this invariant is broken. I've added the trivial IR generation change, along with a new sanity query.
added 2 commits
April 14, 2020 10:54
rdmarsh2
approved these changes
Apr 14, 2020
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The IR generation for
InitializeIndirectioncurrently connects its load operand to the result of the correspondingInitializeParameterinstruction. This isn't exactly wrong, but it doesn't fit the IR invariant of "All unmodeled uses consumeUnmodeledDefinition". Our current code doesn't care, because we just throw away all of the existing def-use information, modeled or otherwise, when we build unaliased SSA. However, some upcoming SSA changes don't work correctly if this invariant is broken.I've added the trivial IR generation change, along with a new sanity query.