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Andrea Di Biagio 91bdf24cfd [llvm-mca] Account for buffered resources when analyzing "Super" resources. 
This was noticed when working on PR3946.
By construction, a group cannot be used as a "Super" resource. That constraint
is enforced by method `SubtargetEmitter::ExpandProcResource()`.

A Super resource S can be part of a group G. However, method
`SubtargetEmitter::ExpandProcResource()` would not update the number of
consumed resource cycles in G based on S.
In practice, this is perfectly fine because the resource usage is correctly
computed for processor resource units. However, llvm-mca should still check if G
is a buffered resource.
Before this patch, llvm-mca didn't correctly check if S was part of a group that
defines a buffer. So, the instruction descriptor was not correctly set.

For now, the semantic change introduced by this patch doesn't affect any of the
upstream scheduling models. However, it will allow to make some progress on PR3946.

llvm-svn: 346545
 		2018-11-09 19:30:20 +00:00
clang Fix a nondeterminism in the debug info for VLA size expressions. 2018-11-09 19:17:56 +00:00
clang-tools-extra [clangd] Fix clang-tidy warnings. 2018-11-09 17:33:48 +00:00
compiler-rt [XRay] Add a test for function id encoding/decoding (NFC) 2018-11-09 07:43:30 +00:00
debuginfo-tests Set config.lit_tools_dir, which is needed by lit.llvm.initialize. 2018-11-06 21:54:27 +00:00
libclc Remove redundant OVERRRIDES file 2018-11-04 00:54:46 +00:00
libcxx Attempt to enable -Wconversion 2018-11-08 23:57:32 +00:00
libcxxabi Use C++11 fallthrough attribute syntax when available and add a break 2018-11-01 18:24:03 +00:00
libunwind [CMake] Link to compiler-rt if LIBUNWIND_USE_COMPILER_RT is ON. 2018-10-08 18:35:00 +00:00
lld [WebAssembly] Respect `--no-mangle` in more locations 2018-11-09 16:57:41 +00:00
lldb Add missing include 2018-11-09 17:58:05 +00:00
llgo Update copyright year to 2018. 2018-06-18 12:22:17 +00:00
llvm [llvm-mca] Account for buffered resources when analyzing "Super" resources. 2018-11-09 19:30:20 +00:00
openmp [OPENMP]Make lambda mapping follow reqs for PTR_AND_OBJ mapping. 2018-11-08 15:47:30 +00:00
parallel-libs Update copyright year to 2018. 2018-06-18 12:22:17 +00:00
polly [CMake] Fix generation of exported targets in build directory 2018-11-06 15:18:17 +00:00
README.md Update the project name in README.md 2018-10-19 00:03:01 +00:00

README.md

The LLVM Compiler Infrastructure

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