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llvm-svn: 216022
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Block address forward-references are implemented by creating a
`BasicBlock` ahead of time that gets inserted in the `Function` when
it's eventually encountered.
However, if the same blockaddress was used in two separate functions
that were parsed *before* the referenced function (and the blockaddress
was never used at global scope), two separate basic blocks would get
created, one of which would be forgotten creating invalid IR.
This commit changes the forward-reference logic to create only one basic
block (and always return the same blockaddress).
llvm-svn: 215805
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`parseBitcodeFile()` uses the generic `getLazyBitcodeFile()` function as
a helper. Since `parseBitcodeFile()` isn't actually lazy -- it calls
`MaterializeAllPermanently()` -- bypass the unnecessary call to
`materializeForwardReferencedFunctions()` by extracting out a common
helper function. This removes the last of the use-list churn caused by
blockaddresses.
This highlights that we can't reproduce use-list order of globals and
constants when parsing lazily -- but that's necessarily out of scope.
When we're parsing lazily, we never have all the functions in memory, so
the use-lists of globals (and constants that reference globals) are
always incomplete.
This is part of PR5680.
llvm-svn: 214581
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parsed function.
We inserted a placeholder that was never replaced because the function was
already visited. Assert that all placeholders have been resolved when tearing
down the bitcode reader.
Fixes PR13895.
llvm-svn: 164369
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assert in the bitcode writer. No change needed because the ValueEnumerator holds
a whole-module numbering anyhow. Fixes PR9857!
llvm-svn: 131016
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