Sanjay Patel 355aee3dcd Revert "[IR][LoopRotate] avoid leaving phi with no operands (PR48296)" ... This reverts commit bfd2c216ea. This appears to be causing stage2 msan failures on buildbots: FAIL: LLVM :: Transforms/SimplifyCFG/X86/bug-25299.ll (65872 of 71835) ******************** TEST 'LLVM :: Transforms/SimplifyCFG/X86/bug-25299.ll' FAILED ******************** Script: -- : 'RUN: at line 1'; /b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/opt < /b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/test/Transforms/SimplifyCFG/X86/bug-25299.ll -simplifycfg -S | /b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/FileCheck /b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/test/Transforms/SimplifyCFG/X86/bug-25299.ll -- Exit Code: 2 Command Output (stderr): -- ==87374==WARNING: MemorySanitizer: use-of-uninitialized-value #0 0x9de47b6 in getBasicBlockIndex /b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/include/llvm/IR/Instructions.h:2749:5 #1 0x9de47b6 in simplifyCommonResume /b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/lib/Transforms/Utils/SimplifyCFG.cpp:4112:23 #2 0x9de47b6 in simplifyResume /b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/lib/Transforms/Utils/SimplifyCFG.cpp:4039:12 #3 0x9de47b6 in (anonymous namespace)::SimplifyCFGOpt::simplifyOnce(llvm::BasicBlock*) /b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/lib/Transforms/Utils/SimplifyCFG.cpp:6330:16 #4 0x9dcca13 in run /b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/lib/Transforms/Utils/SimplifyCFG.cpp:6358:16 #5 0x9dcca13 in llvm::simplifyCFG(llvm::BasicBlock*, llvm::TargetTransformInfo const&, llvm::SimplifyCFGOptions const&, llvm::SmallPtrSetImpl<llvm::BasicBlock*>*) /b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/lib/Transforms/Utils/SimplifyCFG.cpp:6369:8 #6 0x974643d in iterativelySimplifyCFG(		2020-11-30 10:15:42 -05:00
..
Analysis	[AArch64][CostModel] Fix cost for mul <2 x i64>	2020-11-30 11:36:55 +00:00
Assembler	OpaquePtr: Make byval/sret types mandatory	2020-11-20 21:23:33 -05:00
Bindings	Adding PoisonValue for representing poison value explicitly in IR	2020-11-25 17:33:51 -07:00
Bitcode	Adding PoisonValue for representing poison value explicitly in IR	2020-11-25 17:33:51 -07:00
BugPoint	…
CodeGen	Add 'asserts' requiremnt to test/CodeGen/ARM/cortex-a57-misched-mla.mir	2020-11-30 15:19:27 +01:00
DebugInfo	Revert "[DebugInfo] Improve dbg preservation in LSR."	2020-11-27 08:52:32 +01:00
Demangle	…
Examples	…
ExecutionEngine	…
Feature	OpaquePtr: Bulk update tests to use typed sret	2020-11-20 17:58:26 -05:00
FileCheck	…
Instrumentation	[msan] Fix bugs when instrument x86.avx512*_cvt* intrinsics.	2020-11-27 16:33:14 +08:00
Integer	…
JitListener	[MCJIT] Profile the code generated by MCJIT engine using Intel VTune profiler	2020-11-16 19:28:14 +11:00
LTO	…
Linker	OpaquePtr: Bulk update tests to use typed sret	2020-11-20 17:58:26 -05:00
MC	[MC] Copy visibility for .symver created symbols	2020-11-29 16:51:48 -08:00
MachineVerifier	…
Object	[obj2yaml] - Dump section offsets in some cases.	2020-11-25 12:41:01 +03:00
ObjectYAML	Reland "[lib/Support/YAMLTraits] - Don't print leading zeroes when dumping Hex8/Hex16/Hex32 types." (https://reviews.llvm.org/D90930).	2020-11-18 13:08:46 +03:00
Other	[PassManager] Run Induction Variable Simplification pass *after* Recognize loop idioms pass, not before	2020-11-25 19:20:07 +03:00
Reduce	[llvm-reduce] Add reduction for special globals like llvm.used.	2020-11-11 11:25:05 +00:00
SafepointIRVerifier	…
Support	…
SymbolRewriter	…
TableGen	[GlobalISel][TableGen] Fix seg fault for zero instruction	2020-11-24 07:47:58 +01:00
ThinLTO/X86	…
Transforms	Revert "[IR][LoopRotate] avoid leaving phi with no operands (PR48296)"	2020-11-30 10:15:42 -05:00
Unit	…
Verifier	Verifier: Fix assert when verifying non-pointer byval or preallocated	2020-11-20 20:08:43 -05:00
YAMLParser	…
tools	[llvm-objdump] Require x86 target for mcpu/attr test	2020-11-30 13:55:31 +00:00
.clang-format	…
CMakeLists.txt	…
TestRunner.sh	…
lit.cfg.py	…
lit.site.cfg.py.in	…