Identified with clangd.
Once built, LiveIntervals are immutable. This patch captures that. Differential Revision: https://reviews.llvm.org/D118918
To correctly use Query, one had to first call collectInterferingVRegs to pre-cache the query result, then call interferingVRegs. Failing the former, interferingVRegs could be stale. This did cause a bug which was addressed in D98232, but the underlying usability issue of the Query API wasn't. This patch addresses the latter by making collectInterferingVRegs an implementation detail, and having interferingVRegs play both roles. One side-effect of this is that interferingVRegs is not const anymore. Differential Revision: https://reviews.llvm.org/D112882
The main part of the patch is the change in RegAllocGreedy.cpp: Q.collectInterferringVregs() needs to be called before iterating the interfering live ranges. The rest of the patch offers support that is the case: instead of clearing the query's InterferingVRegs field, we invalidate it. The clearing happens when the live reg matrix is invalidated (existing triggering mechanism). Without the change in RegAllocGreedy.cpp, the compiler ices. This patch should make it more easily discoverable by developers that collectInterferringVregs needs to be called before iterating. I will follow up with a subsequent patch to improve the usability and maintainability of Query. Differential Revision: https://reviews.llvm.org/D98232
This reverts commit d40b4911bd9aca0573752e065f29ddd9aff280e1. This causes a large compile-time regression: https://llvm-compile-time-tracker.com/compare.php?from=0aa637b2037d882ddf7861284169abf63f524677&to=d40b4911bd9aca0573752e065f29ddd9aff280e1&stat=instructions
The main part of the patch is the change in RegAllocGreedy.cpp: Q.collectInterferringVregs() needs to be called before iterating the interfering live ranges. The rest of the patch offers support that is the case: instead of clearing the query's InterferingVRegs field, we invalidate it. The clearing happens when the live reg matrix is invalidated (existing triggering mechanism). Without the change in RegAllocGreedy.cpp, the compiler ices. This patch should make it more easily discoverable by developers that collectInterferringVregs needs to be called before iterating. I will follow up with a subsequent patch to improve the usability and maintainability of Query. Differential Revision: https://reviews.llvm.org/D98232
This patch implements amx programming model that discussed in llvm-dev (http://lists.llvm.org/pipermail/llvm-dev/2020-August/144302.html). Thank Hal for the good suggestion in the RA. The fast RA is not in the patch yet. This patch implemeted 7 components. 1. The c interface to end user. 2. The AMX intrinsics in LLVM IR. 3. Transform load/store <256 x i32> to AMX intrinsics or split the type into two <128 x i32>. 4. The Lowering from AMX intrinsics to AMX pseudo instruction. 5. Insert psuedo ldtilecfg and build the def-use between ldtilecfg to amx intruction. 6. The register allocation for tile register. 7. Morph AMX pseudo instruction to AMX real instruction. Change-Id: I935e1080916ffcb72af54c2c83faa8b2e97d5cb0 Differential Revision: https://reviews.llvm.org/D87981
Also renamed the fields to follow style guidelines. Accessors help with readability - weight mutation, in particular, is easier to follow this way. Differential Revision: https://reviews.llvm.org/D87725
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636