Max Kazantsev 1f510bd4c6 [SCEV] Prohibit SCEV transformations for huge SCEVs ... Currently SCEV attempts to limit transformations so that they do not work with big SCEVs (that may take almost infinite compile time). But for this, it uses heuristics such as recursion depth and number of operands, which do not give us a guarantee that we don't actually have big SCEVs. This situation is still possible, though it is not likely to happen. However, the bug PR33494 showed a bunch of simple corner case tests where we still produce huge SCEVs, even not reaching big recursion depth etc. This patch introduces a concept of 'huge' SCEVs. A SCEV is huge if its expression size (intoduced in D35989) exceeds some threshold value. We prohibit optimizing transformations if any of SCEVs we are dealing with is huge. This gives us a reliable check that we don't spend too much time working with them. As the next step, we can possibly get rid of old limiting mechanisms, such as recursion depth thresholds. Differential Revision: https://reviews.llvm.org/D35990 Reviewed By: reames llvm-svn: 352728		2019-01-31 06:19:25 +00:00
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Analysis	[SCEV] Prohibit SCEV transformations for huge SCEVs	2019-01-31 06:19:25 +00:00
AsmParser	Revert "[Sanitizers] UBSan unreachable incompatible with ASan in the presence of noreturn calls"	2019-01-24 18:04:21 +00:00
BinaryFormat	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
Bitcode	Revert "[Sanitizers] UBSan unreachable incompatible with ASan in the presence of noreturn calls"	2019-01-24 18:04:21 +00:00
CodeGen	Revert "Reapply "[CGP] Check for existing inttotpr before creating new one""	2019-01-31 03:28:46 +00:00
DebugInfo	[NativePDB] Fix access to both old & new fpo data entries from dbi stream	2019-01-30 10:40:45 +00:00
Demangle	Add missing include (cstdlib) to Demangle.h	2019-01-22 19:18:18 +00:00
ExecutionEngine	Add namespace to some types.	2019-01-31 04:33:11 +00:00
Fuzzer
FuzzMutate	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
IR	Add a 'dynamic' parameter to the objectsize intrinsic	2019-01-30 20:34:35 +00:00
IRReader	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
LineEditor	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
Linker	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
LTO	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MC	[WebAssembly] MC: Use WritePatchableLEB helper function. NFC.	2019-01-30 22:47:35 +00:00
MCA	[MC][X86] Correctly model additional operand latency caused by transfer delays from the integer to the floating point unit.	2019-01-23 16:35:07 +00:00
Object	[WebAssembly] Add missing SymbolRef update from rL352551	2019-01-30 00:15:48 +00:00
ObjectYAML	[COFF] Add new relocation types.	2019-01-27 19:53:36 +00:00
Option	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
OptRemarks	Update more file headers across all of the LLVM projects in the monorepo	2019-01-19 10:56:40 +00:00
Passes	[HotColdSplit] Move splitting earlier in the pipeline	2019-01-24 18:55:49 +00:00
ProfileData	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
Support	Revert "Add support for prefix-only CLI options"	2019-01-27 09:02:46 +00:00
TableGen	[TblGen] Extend !if semantics through new feature !cond	2019-01-25 10:25:25 +00:00
Target	GlobalISel: Handle odd splits in fewerElementsVector for load/store	2019-01-31 02:46:05 +00:00
Testing	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
TextAPI	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
ToolDrivers	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
Transforms	Add a 'dynamic' parameter to the objectsize intrinsic	2019-01-30 20:34:35 +00:00
WindowsManifest	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
XRay	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
CMakeLists.txt	[llvm-mca] Move llvm-mca library to llvm/lib/MCA.	2018-12-17 08:08:31 +00:00
LLVMBuild.txt	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00