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path: root/llvm/lib/CodeGen/LowerEmuTLS.cpp
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* Update the file headers across all of the LLVM projects in the monorepoChandler Carruth2019-01-191-4/+3
| | | | | | | | | | | | | | | | | 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
* [TLS] use emulated TLS if the target supports only this modeChih-Hung Hsieh2018-02-281-1/+1
| | | | | | | | | | | | | | | Emulated TLS is enabled by llc flag -emulated-tls, which is passed by clang driver. When llc is called explicitly or from other drivers like LTO, missing -emulated-tls flag would generate wrong TLS code for targets that supports only this mode. Now use useEmulatedTLS() instead of Options.EmulatedTLS to decide whether emulated TLS code should be generated. Unit tests are modified to run with and without the -emulated-tls flag. Differential Revision: https://reviews.llvm.org/D42999 llvm-svn: 326341
* Fix a bunch more layering of CodeGen headers that are in TargetDavid Blaikie2017-11-171-1/+1
| | | | | | | | All these headers already depend on CodeGen headers so moving them into CodeGen fixes the layering (since CodeGen depends on Target, not the other way around). llvm-svn: 318490
* CodeGen: Rename DEBUG_TYPE to match passnamesMatthias Braun2017-05-251-1/+1
| | | | | | | | Rename the DEBUG_TYPE to match the names of corresponding passes where it makes sense. Also establish the pattern of simply referencing DEBUG_TYPE instead of repeating the passname where possible. llvm-svn: 303921
* [LegacyPassManager] Remove TargetMachine constructorsFrancis Visoiu Mistrih2017-05-181-10/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This provides a new way to access the TargetMachine through TargetPassConfig, as a dependency. The patterns replaced here are: * Passes handling a null TargetMachine call `getAnalysisIfAvailable<TargetPassConfig>`. * Passes not handling a null TargetMachine `addRequired<TargetPassConfig>` and call `getAnalysis<TargetPassConfig>`. * MachineFunctionPasses now use MF.getTarget(). * Remove all the TargetMachine constructors. * Remove INITIALIZE_TM_PASS. This fixes a crash when running `llc -start-before prologepilog`. PEI needs StackProtector, which gets constructed without a TargetMachine by the pass manager. The StackProtector pass doesn't handle the case where there is no TargetMachine, so it segfaults. Related to PR30324. Differential Revision: https://reviews.llvm.org/D33222 llvm-svn: 303360
* Re-commit optimization bisect support (r267022) without new pass manager ↵Andrew Kaylor2016-04-221-0/+3
| | | | | | | | | | support. The original commit was reverted because of a buildbot problem with LazyCallGraph::SCC handling (not related to the OptBisect handling). Differential Revision: http://reviews.llvm.org/D19172 llvm-svn: 267231
* Revert "Initial implementation of optimization bisect support."Vedant Kumar2016-04-221-3/+0
| | | | | | | | This reverts commit r267022, due to an ASan failure: http://lab.llvm.org:8080/green/job/clang-stage2-cmake-RgSan_check/1549 llvm-svn: 267115
* Initial implementation of optimization bisect support.Andrew Kaylor2016-04-211-0/+3
| | | | | | | | | | | | This patch implements a optimization bisect feature, which will allow optimizations to be selectively disabled at compile time in order to track down test failures that are caused by incorrect optimizations. The bisection is enabled using a new command line option (-opt-bisect-limit). Individual passes that may be skipped call the OptBisect object (via an LLVMContext) to see if they should be skipped based on the bisect limit. A finer level of control (disabling individual transformations) can be managed through an addition OptBisect method, but this is not yet used. The skip checking in this implementation is based on (and replaces) the skipOptnoneFunction check. Where that check was being called, a new call has been inserted in its place which checks the bisect limit and the optnone attribute. A new function call has been added for module and SCC passes that behaves in a similar way. Differential Revision: http://reviews.llvm.org/D19172 llvm-svn: 267022
* Move passes that live in lib/CodeGen out of Scalar.hBenjamin Kramer2016-01-271-1/+1
| | | | llvm-svn: 258938
* [TLS] New lower emutls pass, fix linkage bugs.Chih-Hung Hsieh2016-01-131-0/+159
Previous implementation in http://reviews.llvm.org/D10522 created external references to __emutls_v.* variables. Such references are inaccurate and cannot be handled by all linkers, e.g. Android dynamic and gold linkers for aarch64. Now a new LowerEmuTLS pass to go through all global variables, and add emutls_v.* and emutls_t.* variables. These __emutls* variables have the same linkage and visibility as the associated user defined TLS variable. Also removed old code that dump __emutls* variables in AsmPrinter.cpp, and updated TLS unit tests. Differential Revision: http://reviews.llvm.org/D15300 llvm-svn: 257718
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