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llvm-mirror/tools/llvm-mca
Andrea Di Biagio 935e89a564 [MCA] Improved cost computation for loop carried dependencies in the bottleneck analysis.
This patch introduces a cut-off threshold for dependency edge frequences with
the goal of simplifying the critical sequence computation.  This patch also
removes the cost normalization for loop carried dependencies.  We didn't really
need to artificially amplify the cost of loop-carried dependencies since it is
already computed as the integral over time of the delay (in cycle).

In the absence of backend stalls there is no need for computing a critical
sequence. With this patch we early exit from the critical sequence computation
if no bottleneck was reported during the simulation.

llvm-svn: 372337
2019-09-19 16:05:11 +00:00
..
Views [MCA] Improved cost computation for loop carried dependencies in the bottleneck analysis. 2019-09-19 16:05:11 +00:00
CMakeLists.txt [MCA] Moved the bottleneck analysis to its own file. NFCI 2019-04-17 06:02:05 +00:00
CodeRegion.cpp [llvm] Migrate llvm::make_unique to std::make_unique 2019-08-15 15:54:37 +00:00
CodeRegion.h [MCA] Add support for nested and overlapping region markers 2019-05-09 15:18:09 +00:00
CodeRegionGenerator.cpp [MCA] Add support for printing immedate values as hex. Also enable lexing of masm binary and hex literals. 2019-08-02 10:38:25 +00:00
CodeRegionGenerator.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
llvm-mca.cpp [llvm] Migrate llvm::make_unique to std::make_unique 2019-08-15 15:54:37 +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
PipelinePrinter.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
PipelinePrinter.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00