dfcaf9c8d8
This change preserves the original algorithm of generating history for user variables, but makes it more clear. High-level description of algorithm: Scan all the machine basic blocks and machine instructions in the order they are emitted to the object file. Do the following: 1) If we see a DBG_VALUE instruction, add it to the history of the corresponding user variable. Keep track of all user variables, whose locations are described by a register. 2) If we see a regular instruction, look at all the registers it clobbers, and terminate the location range for all variables described by these registers. 3) At the end of the basic block, terminate location ranges for all user variables described by some register. Although this change shouldn't be user-visible (the contents of .debug_loc section should be the same), it changes some internal assumptions about the set of instructions used to track the variable locations. Watching the bots. llvm-svn: 209225 |
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| docs | ||
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| include | ||
| lib | ||
| projects | ||
| test | ||
| tools | ||
| unittests | ||
| utils | ||
| .arcconfig | ||
| .clang-format | ||
| .gitignore | ||
| CMakeLists.txt | ||
| CODE_OWNERS.TXT | ||
| CREDITS.TXT | ||
| LICENSE.TXT | ||
| LLVMBuild.txt | ||
| Makefile | ||
| Makefile.common | ||
| Makefile.config.in | ||
| Makefile.rules | ||
| README.txt | ||
| configure | ||
| llvm.spec.in | ||
README.txt
Low Level Virtual Machine (LLVM) ================================ This directory and its subdirectories contain source code for the Low Level Virtual Machine, 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're writing a package for LLVM, see docs/Packaging.rst for our suggestions.