summaryrefslogtreecommitdiffstats
path: root/llvm/lib/Transforms/Utils/Utils.cpp
Commit message (Collapse)AuthorAgeFilesLines
* Add -strip-nonlinetable-debuginfo capabilityMichael Ilseman2016-10-251-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | This adds a new function to DebugInfo.cpp that takes an llvm::Module as input and removes all debug info metadata that is not directly needed for line tables, thus effectively stripping all type and variable information from the module. The primary motivation for this feature was the bitcode work flow (cf. http://lists.llvm.org/pipermail/llvm-dev/2016-June/100643.html for more background). This is not wired up yet, but will be in subsequent patches. For testing, the new functionality is exposed to opt with a -strip-nonlinetable-debuginfo option. The secondary use-case (and one that works right now!) is as a reduction pass in bugpoint. I added two new bugpoint options (-disable-strip-debuginfo and -disable-strip-debug-types) to control the new features. By default it will first attempt to remove all debug information, then only the type info, and then proceed to hack at any remaining MDNodes. Thanks to Adrian Prantl for stewarding this patch! llvm-svn: 285094
* [StripGCRelocates] New pass to remove gc.relocates added by RS4GCAnna Thomas2016-10-211-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | Summary: Utility pass to remove gc.relocates created by rewrite statepoints for GC. With respect to safepoint verification, the IR generated would be incorrect, and cannot run as such. This would be a single transformation on the final optimized IR. The benefit of the pass is for easy analysis when the IRs are 'polluted' by too many gc.relocates. Added tests. test run: All RS4GC tests with -verify option. Local downstream tests on large IR files. This also works when the pointer being gc.relocated is another gc.relocate. Reviewers: sanjoy, reames Subscribers: beanz, mgorny, llvm-commits Differential Revision: https://reviews.llvm.org/D25096 llvm-svn: 284855
* Conditionally eliminate library calls where the result value is not usedRong Xu2016-10-181-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: This pass shrink-wraps a condition to some library calls where the call result is not used. For example: sqrt(val); is transformed to if (val < 0) sqrt(val); Even if the result of library call is not being used, the compiler cannot safely delete the call because the function can set errno on error conditions. Note in many functions, the error condition solely depends on the incoming parameter. In this optimization, we can generate the condition can lead to the errno to shrink-wrap the call. Since the chances of hitting the error condition is low, the runtime call is effectively eliminated. These partially dead calls are usually results of C++ abstraction penalty exposed by inlining. This optimization hits 108 times in 19 C/C++ programs in SPEC2006. Reviewers: hfinkel, mehdi_amini, davidxl Subscribers: modocache, mgorny, mehdi_amini, xur, llvm-commits, beanz Differential Revision: https://reviews.llvm.org/D24414 llvm-svn: 284542
* Revert "Add -strip-nonlinetable-debuginfo capability"Michael Ilseman2016-10-061-1/+0
| | | | | | | | This reverts commit r283473. Reverted until review is completed. llvm-svn: 283478
* Add -strip-nonlinetable-debuginfo capabilityMichael Ilseman2016-10-061-0/+1
| | | | | | | | | | | | | | | | | | | | | | This adds a new function to DebugInfo.cpp that takes an llvm::Module as input and removes all debug info metadata that is not directly needed for line tables, thus effectively stripping all type and variable information from the module. The primary motivation for this feature was the bitcode work flow (cf. http://lists.llvm.org/pipermail/llvm-dev/2016-June/100643.html for more background). This is not wired up yet, but will be in subsequent patches. For testing, the new functionality is exposed to opt with a -strip-nonlinetable-debuginfo option. The secondary use-case (and one that works right now!) is as a reduction pass in bugpoint. I added two new bugpoint options (-disable-strip-debuginfo and -disable-strip-debug-types) to control the new features. By default it will first attempt to remove all debug information, then only the type info, and then proceed to hack at any remaining MDNodes. llvm-svn: 283473
* Rename NameAnonFunctions to NameAnonGlobals to match what it is doing (NFC)Mehdi Amini2016-09-161-1/+1
| | | | llvm-svn: 281745
* [PM] Port LowerInvoke to the new pass managerMichael Kuperstein2016-08-121-1/+1
| | | | llvm-svn: 278531
* [PM] Port NameAnonFunction pass to new pass managerTeresa Johnson2016-08-121-1/+1
| | | | | | | | | | | | | | | Summary: Port the NameAnonFunction pass and add a test. Depends on D23439. Reviewers: mehdi_amini Subscribers: llvm-commits, mehdi_amini Differential Revision: https://reviews.llvm.org/D23440 llvm-svn: 278509
* [MemorySSA] Reinstate the legacy printer and verifier.Chad Rosier2016-07-061-0/+1
| | | | | | Differential Revision: http://reviews.llvm.org/D22058 llvm-svn: 274679
* [PM] Port Add discriminator pass to new PMXinliang David Li2016-06-151-1/+1
| | | | llvm-svn: 272847
* [PM] Port Mem2Reg to the new pass manager.Davide Italiano2016-06-141-1/+1
| | | | llvm-svn: 272630
* [PM] Port LCSSA to the new PM.Easwaran Raman2016-06-091-1/+1
| | | | | | Differential Revision: http://reviews.llvm.org/D21090 llvm-svn: 272294
* [MemorySSA] Port to new pass managerGeoff Berry2016-06-011-2/+1
| | | | | | | | | | | | | | | | | Add support for the new pass manager to MemorySSA pass. Change MemorySSA to be computed eagerly upon construction. Change MemorySSAWalker to be owned by the MemorySSA object that creates it. Reviewers: dberlin, george.burgess.iv Subscribers: mcrosier, llvm-commits Differential Revision: http://reviews.llvm.org/D19664 llvm-svn: 271432
* Add a pass to name anonymous/nameless functionMehdi Amini2016-04-121-0/+1
| | | | | | | | | | | | | | | | Summary: For correct handling of alias to nameless function, we need to be able to refer them through a GUID in the summary. Here we name them using a hash of the non-private global names in the module. Reviewers: tejohnson Subscribers: joker.eph, llvm-commits Differential Revision: http://reviews.llvm.org/D18883 From: Mehdi Amini <mehdi.amini@apple.com> llvm-svn: 266132
* This patch adds MemorySSA to LLVM.George Burgess IV2016-02-021-0/+2
| | | | | | | | | Please see include/llvm/Transforms/Utils/MemorySSA.h for a description of MemorySSA, and what it does. Differential Revision: http://reviews.llvm.org/D7864 llvm-svn: 259595
* Pass to emit DWARF path discriminators.Diego Novillo2014-03-031-0/+1
| | | | | | | | | | | | | | | | DWARF discriminators are used to distinguish multiple control flow paths on the same source location. When this happens, instructions across basic block boundaries will share the same debug location. This pass detects this situation and creates a new lexical scope to one of the two instructions. This lexical scope is a child scope of the original and contains a new discriminator value. This discriminator is then picked up from MCObjectStreamer::EmitDwarfLocDirective to be written on the object file. This fixes http://llvm.org/bugs/show_bug.cgi?id=18270. llvm-svn: 202752
* Re-sort all of the includes with ./utils/sort_includes.py so thatChandler Carruth2014-01-071-1/+1
| | | | | | | | | | subsequent changes are easier to review. About to fix some layering issues, and wanted to separate out the necessary churn. Also comment and sink the include of "Windows.h" in three .inc files to match the usage in Memory.inc. llvm-svn: 198685
* This patch breaks up Wrap.h so that it does not have to include all of Filip Pizlo2013-05-011-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | the things, and renames it to CBindingWrapping.h. I also moved CBindingWrapping.h into Support/. This new file just contains the macros for defining different wrap/unwrap methods. The calls to those macros, as well as any custom wrap/unwrap definitions (like for array of Values for example), are put into corresponding C++ headers. Doing this required some #include surgery, since some .cpp files relied on the fact that including Wrap.h implicitly caused the inclusion of a bunch of other things. This also now means that the C++ headers will include their corresponding C API headers; for example Value.h must include llvm-c/Core.h. I think this is harmless, since the C API headers contain just external function declarations and some C types, so I don't believe there should be any nasty dependency issues here. llvm-svn: 180881
* Move C++ code out of the C headers and into either C++ headersEric Christopher2013-04-221-0/+1
| | | | | | | or the C++ files themselves. This enables people to use just a C compiler to interoperate with LLVM. llvm-svn: 180063
* Add a pass that renames everything with metasyntatic names. This works well ↵Alex Rosenberg2012-09-111-0/+1
| | | | | | after using bugpoint to reduce the confusion presented by the original names, which no longer mean what they used to. llvm-svn: 163592
* Add a new convenience pass for testing InstructionSimplify. PreviouslyDuncan Sands2010-12-201-0/+1
| | | | | | | | | it could only be tested indirectly, via instcombine, gvn or some other pass that makes use of InstructionSimplify, which means that testcases had to be carefully contrived to dance around any other transformations that that pass did. llvm-svn: 122264
* Next step on the getting-rid-of-static-ctors train: begin adding per-libraryOwen Anderson2010-10-071-0/+36
initialization functions that initialize the set of passes implemented in that library. Add C bindings for these functions as well. llvm-svn: 115927
OpenPOWER on IntegriCloud