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llvm-project/llvm/lib
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Wei Mi 55a68a2400 [JumpThreading] Stop searching predecessor when the current bb is in a 
unreachable loop.

updatePredecessorProfileMetadata in jumpthreading tries to find the
first dominating predecessor block for a PHI value by searching upwards
the predecessor block chain.

But jumpthreading may see some temporary IR state which contains
unreachable bb not being cleaned up. If an unreachable loop happens to
be on the predecessor block chain, keeping chasing the predecessor
block will run into an infinite loop.

The patch fixes it.

Differential Revision: https://reviews.llvm.org/D65310

llvm-svn: 367154
 		2019-07-26 20:59:22 +00:00
..
Analysis [LOOPINFO] Introduce the loop guard API. 2019-07-25 16:13:18 +00:00
AsmParser ARM MTE stack sanitizer. 2019-07-15 20:02:23 +00:00
BinaryFormat [Object][XCOFF] Add support for 64-bit file header and section header dumping. 2019-07-09 18:09:11 +00:00
Bitcode [llvm-bcanalyzer] Fixed error 'Expected<T> must be checked before access or destruction' 2019-07-17 23:28:39 +00:00
Bitstream [Bitcode] Move Bitstream to a separate library 2019-07-03 22:40:07 +00:00
CodeGen [PowerPC][AIX]Add lowering of MCSymbol MachineOperand. 2019-07-26 17:25:27 +00:00
DebugInfo [DWARF][NFC] Add constants for reserved values of an initial length field. 2019-07-24 11:34:29 +00:00
Demangle llvm-undname: Correctly demangle vararg parameters 2019-06-04 19:10:08 +00:00
ExecutionEngine [ORC] Suppress an ORCv1 deprecation warning. 2019-07-18 19:55:42 +00:00
FuzzMutate [opaque pointer types] Pass value type to LoadInst creation. 2019-02-01 20:44:24 +00:00
Fuzzer
…
IR Allow prefetching from non-zero address spaces 2019-07-25 16:11:57 +00:00
IRReader [IRReader] Expose getLazyIRModule 2019-02-11 22:01:13 +00:00
LTO Open native file handles to avoid converting from FDs, NFC 2019-07-11 20:29:32 +00:00
LineEditor [CMake] Delete redundant DEPENDS/LINK_LIBS from LineEditor/XRay 2019-06-22 01:50:21 +00:00
Linker Reapply: IR: add optional type to 'byval' function parameters 2019-05-30 18:48:23 +00:00
MC [MC] Delete unused MCInstPrinter::markup overload and getPrintHexStyle 2019-07-25 09:54:12 +00:00
MCA [MCA] Ignore invalid processor resource writes of zero cycles. NFCI 2019-06-14 13:31:21 +00:00
Object [Object] Add public MaxSectionAlignment to MachOUniversal 2019-07-25 00:29:13 +00:00
ObjectYAML [yaml2obj] - Allow overriding the sh_size field. 2019-07-11 12:59:29 +00:00
Option Let unaliased Args track which Alias they were created from, and use that in Arg::getAsString() for diagnostics 2019-07-09 00:34:08 +00:00
Passes Reland the "[NewPM] Port Sancov" patch from rL365838. No functional 2019-07-25 20:53:15 +00:00
ProfileData [Profile] Support raw/indexed profiles larger than 4GB 2019-07-09 22:01:04 +00:00
Remarks Revert "[Remarks] Support parsing remark metadata in the YAML remark parser" 2019-07-26 20:54:44 +00:00
Support [AArch64][SVE2] Rename bitperm feature to sve2-bitperm 2019-07-26 15:57:50 +00:00
TableGen TableGen: Handle nontrivial foreach range bounds 2019-05-22 21:28:20 +00:00
Target Revert "[X86][SSE] Replace PMULDQ GetDemandedBits combine with SimplifyMultipleUseDemandedBits handler." 2019-07-26 18:14:21 +00:00
Testing [Testing] Move clangd::Annotations to llvm testing support 2019-04-25 10:08:31 +00:00
TextAPI Cleanup: llvm::bsearch -> llvm::partition_point after r364719 2019-06-30 11:19:56 +00:00
ToolDrivers [llvm-lib] Add a dependency to intrinsics_gen to the LLVMLibDriver build 2019-07-15 18:15:12 +00:00
Transforms [JumpThreading] Stop searching predecessor when the current bb is in a 2019-07-26 20:59:22 +00:00
WindowsManifest
…
XRay Open native file handles to avoid converting from FDs, NFC 2019-07-11 20:29:32 +00:00
CMakeLists.txt Fix build errors LLVM tests are disabled. 2019-07-11 22:08:35 +00:00
LLVMBuild.txt [Bitcode] Move Bitstream to a separate library 2019-07-03 22:40:07 +00:00