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Author SHA1 Message Date
Chris Dewhurst 850131213f This pass, fixing an erratum in some LEON 2 processors ensures that the SDIV instruction is not issued, but replaced by SDIVcc instead, which does not exhibit the error. Unit test included. 
Differential Review: https://reviews.llvm.org/D24660

llvm-svn: 283727
 2016-10-10 08:53:06 +00:00
James Y Knight 2cc9da9a65 Revert "[Sparc] Leon errata fix passes." 
...and the two followup commits:
Revert "[Sparc][Leon] Missed resetting option flags from check-in 278489."
Revert "[Sparc][Leon] Errata fixes for various errata in different
versions of the Leon variants of the Sparc 32 bit processor."

This reverts commit r274856, r278489, and r278492.

llvm-svn: 278511
 2016-08-12 14:48:09 +00:00
Chris Dewhurst 3202f065b8 [Sparc] Leon errata fix passes. 
Errata fixes for various errata in different versions of the Leon variants of the Sparc 32 bit processor.

The nature of the errata are listed in the comments preceding the errata fix passes. Relevant unit tests are implemented for each of these.

Note: Running clang-format has changed a few other lines too, unrelated to the implemented errata fixes. These have been left in as this keeps the code formatting consistent.

Differential Revision: http://reviews.llvm.org/D21960

llvm-svn: 274856
 2016-07-08 15:33:56 +00:00