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Author SHA1 Message Date
Sanjay Patel 0d04cbb578 [TargetLowering][DAGCombine][MSP430] add/use hook for Shift Amount Threshold (1/2) 
Provides a TLI hook to allow targets to relax the emission of shifts, thus enabling
codegen improvements on targets with no multiple shift instructions and cheap selects
or branches.

Contributes to a Fix for PR43559:
https://bugs.llvm.org/show_bug.cgi?id=43559

Patch by: @joanlluch (Joan LLuch)

Differential Revision: https://reviews.llvm.org/D69116

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@375347 91177308-0d34-0410-b5e6-96231b3b80d8
 2019-10-19 16:57:02 +00:00
Sanjay Patel 896dde46ee [MSP430] Shift Amount Threshold in DAGCombine (Baseline Tests); NFC 
Patch by: @joanlluch (Joan LLuch)

Differential Revision: https://reviews.llvm.org/D69099

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@375345 91177308-0d34-0410-b5e6-96231b3b80d8
 2019-10-19 16:29:32 +00:00