forked from OSchip/llvm-project
507d193ea7
If we ended up with two phi instructions in a block, and we needed to fix up the banks for the first one, we'd end up inserting our COPY before the second phi. E.g. ``` %x = G_PHI ... %fixup = COPY ... %y = G_PHI ... ``` This is invalid MIR, and breaks assumptions made by the register allocator later down the line. With the verifier enabled, it also emits a verification error. This teaches fixupPHIOpBanks to walk past any phi instructions in the block when emitting the fixup copies. Here's an example of the crashing code (same as added testcase): https://godbolt.org/z/h5j1x3o6e Differential Revision: https://reviews.llvm.org/D103582 |
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| tools | ||
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| llvm.spec.in | ||
README.txt
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. LLVM is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt. Please see the documentation provided in docs/ for further assistance with LLVM, and in particular docs/GettingStarted.rst for getting started with LLVM and docs/README.txt for an overview of LLVM's documentation setup. If you are writing a package for LLVM, see docs/Packaging.rst for our suggestions.