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Author SHA1 Message Date
Peter Collingbourne 1a8b825606 LowerTypeTests: Add import/export support for targets without absolute symbol constants. 
The rationale is the same as for r312967.

Differential Revision: https://reviews.llvm.org/D37408

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@312968 91177308-0d34-0410-b5e6-96231b3b80d8
 2017-09-11 22:49:10 +00:00
Peter Collingbourne 37911b93a0 WholeProgramDevirt: Add import/export support for targets without absolute symbol constants. 
Not all targets support the use of absolute symbols to export
constants. In particular, ARM has a wide variety of constant encodings
that cannot currently be relocated by linkers. So instead of exporting
the constants using symbols, export them directly in the summary.
The values of the constants are left as zeroes on targets that support
symbolic exports.

This may result in more cache misses when targeting those architectures
as a result of arbitrary changes in constant values, but this seems
somewhat unavoidable for now.

Differential Revision: https://reviews.llvm.org/D37407

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@312967 91177308-0d34-0410-b5e6-96231b3b80d8
 2017-09-11 22:34:42 +00:00
Peter Collingbourne bfecb4640b WholeProgramDevirt: Implement export/import support for VCP. 
Differential Revision: https://reviews.llvm.org/D30017

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@297503 91177308-0d34-0410-b5e6-96231b3b80d8
 2017-03-10 20:13:58 +00:00