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Xin Tong 8a505c64b0 [CVP] Handle instructions with no user. No need to create CVPLattice state. This handles terminator instructions and more. 
Summary:
I tested this patch by compiling sqlite3.ll (clang -O3 -mllvm -disable-llvm-optzns sqlite3.c.)

 opt -called-value-propagation sqlite3.ll -time-passes -f -o out.ll

 I get 10+% speedup for the pass. I expect some of the gain come from skipping terminator instructions.

    === BEFORE THE PATCH ===
    ===-------------------------------------------------------------------------===
                          ... Pass execution timing report ...
    ===-------------------------------------------------------------------------===
      Total Execution Time: 0.5562 seconds (0.5582 wall clock)

       ---User Time---   --System Time--   --User+System--   ---Wall Time---  --- Name ---
       0.2485 ( 46.4%)   0.0120 ( 57.7%)   0.2605 ( 46.8%)   0.2615 ( 46.8%)  Bitcode Writer
       0.1607 ( 30.0%)   0.0079 ( 37.7%)   0.1685 ( 30.3%)   0.1693 ( 30.3%)  Called Value Propagation
       0.1262 ( 23.6%)   0.0009 (  4.5%)   0.1271 ( 22.9%)   0.1275 ( 22.8%)  Module Verifier
       0.5353 (100.0%)   0.0209 (100.0%)   0.5562 (100.0%)   0.5582 (100.0%)  Total

    === AFTER THE PATCH ===
    ===-------------------------------------------------------------------------===
                          ... Pass execution timing report ...
    ===-------------------------------------------------------------------------===
      Total Execution Time: 0.5338 seconds (0.5355 wall clock)

       ---User Time---   --System Time--   --User+System--   ---Wall Time---  --- Name ---
       0.2498 ( 48.6%)   0.0118 ( 59.3%)   0.2615 ( 49.0%)   0.2629 ( 49.1%)  Bitcode Writer
       0.1377 ( 26.8%)   0.0075 ( 37.8%)   0.1452 ( 27.2%)   0.1455 ( 27.2%)  Called Value Propagation
       0.1264 ( 24.6%)   0.0006 (  3.0%)   0.1270 ( 23.8%)   0.1271 ( 23.7%)  Module Verifier
       0.5139 (100.0%)   0.0199 (100.0%)   0.5338 (100.0%)   0.5355 (100.0%)  Total

Reviewers: davide, mssimpso

Reviewed By: davide

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D49108

llvm-svn: 342398
 		2018-09-17 15:28:01 +00:00
clang [ASTImporter] Fix import of VarDecl init 2018-09-17 12:04:52 +00:00
clang-tools-extra [clang-tidy] fix PR37913, templated exception factory diagnosed correctly 2018-09-17 13:55:10 +00:00
compiler-rt [UBSan] Partially fix `test/ubsan/TestCases/Misc/log-path_test.cc` so that it can run on devices. 2018-09-17 13:33:44 +00:00
debuginfo-tests Revert "(Retry) Add a basic integration test for C++ smart pointers" 2018-08-20 19:53:33 +00:00
libclc configure: Rework support for gfx9+ devices that were added post LLVM 3.9 2018-09-15 22:02:01 +00:00
libcxx Fix typo 2018-09-17 07:40:42 +00:00
libcxxabi Merge Demangle change in r342330 to libcxxabi. 2018-09-15 18:25:49 +00:00
libunwind [CMake] Don't use -rtlib=compiler-rt with -nodefaultlibs. 2018-09-04 20:57:50 +00:00
lld [ELF] Use llvm::toLower instead of libc call tolower 2018-09-15 23:59:13 +00:00
lldb Add descriptions to completed expressions 2018-09-17 12:06:07 +00:00
llgo Update copyright year to 2018. 2018-06-18 12:22:17 +00:00
llvm [CVP] Handle instructions with no user. No need to create CVPLattice state. This handles terminator instructions and more. 2018-09-17 15:28:01 +00:00
openmp [OPENMP]Increment iterator when the loop is continued. 2018-09-11 17:16:26 +00:00
parallel-libs Update copyright year to 2018. 2018-06-18 12:22:17 +00:00
polly [ScopDetection] Use addUnknown for calls in the AliasSetTracker. 2018-09-11 23:48:14 +00:00
README.md
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README.md

Low Level Virtual Machine (LLVM)

This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments.