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Mircea Trofin 001ab10906 [llvm] API for encoding/decoding DWARF discriminators.

Summary:
Added a pair of APIs for encoding/decoding the 3 components of a DWARF discriminator described in http://lists.llvm.org/pipermail/llvm-dev/2016-October/106532.html: the base discriminator, the duplication factor (useful in profile-guided optimization) and the copy index (used to identify copies of code in cases like loop unrolling)

The encoding packs 3 unsigned values in 32 bits. This CL addresses 2 issues:
- communicates overflow back to the user
- supports encoding all 3 components together. Current APIs assume a sequencing of events. For example, creating a new discriminator based on an existing one by changing the base discriminator was not supported.

Reviewers: davidxl, danielcdh, wmi, dblaikie

Reviewed By: dblaikie

Subscribers: zzheng, dmgreen, aprantl, JDevlieghere, llvm-commits

Differential Revision: https://reviews.llvm.org/D55681

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@349973 91177308-0d34-0410-b5e6-96231b3b80d8

2018-12-21 22:48:50 +00:00

CMakeLists.txt

[VPlan, SLP] Add simple SLP analysis on top of VPlan.

2018-11-14 13:11:49 +00:00

LLVMBuild.txt

Update libdeps since TLI was moved from Target to Analysis in r226078.

2015-01-15 05:21:00 +00:00

LoadStoreVectorizer.cpp

[PM] Port LoadStoreVectorizer to the new pass manager.

2018-12-07 08:23:37 +00:00

LoopVectorizationLegality.cpp

[LoopVectorize] Rename pass options. NFC.