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* [IR] Disallow llvm.global_ctors and llvm.global_dtors of the 2-field form in ↵Fangrui Song2019-05-151-2/+2
| | | | | | | | | | | | | | | | | | | | textual format The 3-field form was introduced by D3499 in 2014 and the legacy 2-field form was planned to be removed in LLVM 4.0 For the textual format, this patch migrates the existing 2-field form to use the 3-field form and deletes the compatibility code. test/Verifier/global-ctors-2.ll checks we have a friendly error message. For bitcode, lib/IR/AutoUpgrade UpgradeGlobalVariables will upgrade the 2-field form (add i8* null as the third field). Reviewed By: rnk, dexonsmith Differential Revision: https://reviews.llvm.org/D61547 llvm-svn: 360742
* Revert "Temporarily Revert "Add basic loop fusion pass.""Eric Christopher2019-04-171-0/+37
| | | | | | | | The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
* Temporarily Revert "Add basic loop fusion pass."Eric Christopher2019-04-171-37/+0
| | | | | | | | As it's causing some bot failures (and per request from kbarton). This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda. llvm-svn: 358546
* GlobalDCE: Teach isEmptyFunction() to ignore debug intrinsics.Adrian Prantl2018-11-161-1/+24
| | | | | | | This fixes PR39669. https://bugs.llvm.org/show_bug.cgi?id=39669 llvm-svn: 347065
* Teach GlobalDCE how to remove empty global_ctor entries.Nico Weber2014-05-021-0/+14
This moves most of GlobalOpt's constructor optimization code out of GlobalOpt into Transforms/Utils/CDtorUtils.{h,cpp}. The public interface is a single function OptimizeGlobalCtorsList() that takes a predicate returning which constructors to remove. GlobalOpt calls this with a function that statically evaluates all constructors, just like it did before. This part of the change is behavior-preserving. Also add a call to this from GlobalDCE with a filter that removes global constructors that contain a "ret" instruction and nothing else – this fixes PR19590. llvm-svn: 207856
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