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Author SHA1 Message Date
Peter Collingbourne b9b6025328 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

llvm-svn: 312968
 2017-09-11 22:49:10 +00:00
Peter Collingbourne b15a35e604 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

llvm-svn: 312967
 2017-09-11 22:34:42 +00:00
Evgeniy Stepanov b933ad3a77 Skip CFI for dead functions. 
Differential Revision: https://reviews.llvm.org/D33805

llvm-svn: 304578
 2017-06-02 18:24:23 +00:00
Peter Collingbourne 59675ba0f8 WholeProgramDevirt: Implement export/import support for unique ret val opt. 
Differential Revision: https://reviews.llvm.org/D29917

llvm-svn: 297502
 2017-03-10 20:09:11 +00:00