...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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@278511 91177308-0d34-0410-b5e6-96231b3b80d8
The nature of the errata are listed in the comments preceding the errata fix passes. Relevant unit tests are implemented for each of these.
These changes update older versions of these errata fixes with improvements to code and unit tests.
Differential Revision: https://reviews.llvm.org/D21960
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@278489 91177308-0d34-0410-b5e6-96231b3b80d8
Due to an erratum in some versions of LEON, we must insert a NOP after any LD or LDF instruction to ensure the processor has time to load the value correctly before using it. This pass will implement that erratum fix.
The code will have no effect for other Sparc, but non-LEON processors.
Differential Review: http://reviews.llvm.org/D20353
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@270417 91177308-0d34-0410-b5e6-96231b3b80d8
Daniel Cederman