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Author SHA1 Message Date
Arthur Eubanks f50b3ff02e [Hexagon] Use InstSimplify instead of ConstantProp 
This is the last remaining use of ConstantProp, migrate it to InstSimplify in the goal of removing ConstantProp.

Add -hexagon-instsimplify option to enable skipping of instsimplify in
tests that can't handle the extra optimization.

Differential Revision: https://reviews.llvm.org/D85047
 2020-08-04 15:42:39 -07:00
Krzysztof Parzyszek d91a9e27a9 [Hexagon] Simplify CFG after atomic expansion 
This will remove suboptimal branching from the generated ll/sc loops.
The extra simplification pass affects a lot of testcases, which have
been modified to accommodate this change: either by modifying the
test to become immune to the CFG simplification, or (less preferablt)
by adding option -hexagon-initial-cfg-clenaup=0.

llvm-svn: 338774
 2018-08-02 22:17:53 +00:00
Krzysztof Parzyszek 9b48e8d233 [Hexagon] Add code to select QTRUE and QFALSE 
Fixes http://llvm.org/PR36320.

llvm-svn: 324763
 2018-02-09 19:10:46 +00:00