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Florian Hahn dca509f5d0 [ScheduleDAGRRList] Recompute topological ordering on demand. 
Currently there is a single point in ScheduleDAGRRList, where we
actually query the topological order (besides init code). Currently we
are recomputing the order after adding a node (which does not have
predecessors) and then we add predecessors edge-by-edge.

We can avoid adding edges one-by-one after we added a new node. In that case, we can
just rebuild the order from scratch after adding the edges to the DAG
and avoid all the updates to the ordering.

Also, we can delay updating the DAG until we query the DAG, if we keep a
list of added edges. Depending on the number of updates, we can either
apply them when needed or recompute the order from scratch.

This brings down the geomean compile time for of CTMark with -O1 down 0.3% on X86,
with no regressions.

Reviewers: MatzeB, atrick, efriedma, niravd, paquette

Reviewed By: efriedma

Differential Revision: https://reviews.llvm.org/D60125

llvm-svn: 358583
2019-04-17 15:05:29 +00:00
benchmarks
bindings [OCaml] Update api to account for FNeg and CallBr instructions 2019-04-16 15:00:19 +00:00
cmake Removed CMake cache upgrade code from 2011 2019-04-16 09:46:02 +00:00
docs [CommandLineParser] Add DefaultOption flag 2019-04-15 17:18:10 +00:00
examples [Kaleidoscope] Fix symbol resolver to search in reverse order. 2019-02-21 16:53:04 +00:00
include [ScheduleDAGRRList] Recompute topological ordering on demand. 2019-04-17 15:05:29 +00:00
lib [ScheduleDAGRRList] Recompute topological ordering on demand. 2019-04-17 15:05:29 +00:00
projects Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
resources
runtimes [runtime] Use --strip-all rather than --strip-sections 2019-03-10 04:26:54 +00:00
test [AMDGPU][MC] Corrected parsing of registers 2019-04-17 14:44:01 +00:00
tools Change some llvm::{lower,upper}_bound to llvm::bsearch. NFC 2019-04-17 07:58:05 +00:00
unittests [ADT] llvm::bsearch, binary search for mere mortals 2019-04-16 23:53:28 +00:00
utils gn build: Merge r358554 2019-04-17 13:40:57 +00:00
.arcconfig
.clang-format
.clang-tidy Disable tidy checks with too many hits 2019-02-01 11:20:13 +00:00
.gitattributes
.gitignore [clangd] Store index in '.clangd/index' instead of '.clangd-index' 2019-02-20 19:08:06 +00:00
CMakeLists.txt [CMake] Move configuration of LLVM_CXX_STD to HandleLLVMOptions.cmake 2019-04-09 08:14:32 +00:00
CODE_OWNERS.TXT [llvm-mca] Move llvm-mca library to llvm/lib/MCA. 2018-12-17 08:08:31 +00:00
configure
CREDITS.TXT [NFC] Add to contributor list. 2019-02-26 05:46:45 +00:00
LICENSE.TXT Fix typos throughout the license files that somehow I and my reviewers 2019-01-21 09:52:34 +00:00
llvm.spec.in Update structured references to the license to the new license. 2019-01-19 11:30:51 +00:00
LLVMBuild.txt Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
README.txt Testing commit access 2019-02-19 20:38:51 +00:00
RELEASE_TESTERS.TXT Update the list of platforms & archs 2018-12-16 14:47:16 +00:00

README.txt 

The LLVM Compiler Infrastructure
================================

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