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Eli Friedman d8e8722791 [CodeGen] Fix hashing for MO_ExternalSymbol MachineOperands. 
We were hashing the string pointer, not the string, so two instructions
could be identical (isIdenticalTo), but have different hash codes.

This showed up as a very rare, non-deterministic assertion failure
rehashing a DenseMap constructed by MachineOutliner.  So there's no
"real" testcase, just a unittest which checks that the hash function
behaves correctly.

I'm a little scared fixing this is going to cause a regression in
outlining or MachineCSE, but hopefully we won't run into any issues.

Differential Revision: https://reviews.llvm.org/D61975

llvm-svn: 362281
 		2019-06-01 00:08:54 +00:00
..
Analysis [SimplifyLibCalls] Fold more fortified functions into non-fortified variants 2019-05-31 22:41:36 +00:00
AsmParser Reapply: IR: add optional type to 'byval' function parameters 2019-05-30 18:48:23 +00:00
BinaryFormat [XCOFF] Add functionality for parsing AIX XCOFF object file headers 2019-04-04 00:53:21 +00:00
Bitcode Reapply: IR: add optional type to 'byval' function parameters 2019-05-30 18:48:23 +00:00
CodeGen [CodeGen] Fix hashing for MO_ExternalSymbol MachineOperands. 2019-06-01 00:08:54 +00:00
DebugInfo [COFF, ARM64] Add CodeView register mapping 2019-05-31 23:43:31 +00:00
Demangle llvm-undname: Support demangling char8_t 2019-05-28 15:30:04 +00:00
ExecutionEngine [RuntimeDyld] Update reserveAllocationSpace to account for stub padding. 2019-05-30 20:58:28 +00:00
FuzzMutate [opaque pointer types] Pass value type to LoadInst creation. 2019-02-01 20:44:24 +00:00
Fuzzer
…
IR [Remarks][NFC] Move the serialization to lib/Remarks 2019-05-30 21:45:59 +00:00
IRReader [IRReader] Expose getLazyIRModule 2019-02-11 22:01:13 +00:00
LTO Fix -DBUILD_SHARED_LIBS=ON build after rL362160 2019-05-31 01:04:00 +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 Reapply: IR: add optional type to 'byval' function parameters 2019-05-30 18:48:23 +00:00
MC [codeview] Revert inline line table change of r362264 2019-05-31 22:55:03 +00:00
MCA [MCA] Refactor class LSUnit. NFCI 2019-05-29 11:38:27 +00:00
Object [ARM] add target arch definitions for 8.1-M and MVE 2019-05-30 12:57:04 +00:00
ObjectYAML [COFF, ARM64] Add CodeView register mapping 2019-05-31 23:43:31 +00:00
Option Option spell checking: Penalize delimiter flags if input has no argument 2019-05-01 16:45:15 +00:00
Passes [NewPassManager] Add tuning option: ForgetAllSCEVInLoopUnroll [NFC]. 2019-05-23 21:52:59 +00:00
ProfileData Recommit [Object] Change object::SectionRef::getContents() to return Expected<StringRef> 2019-05-16 13:24:04 +00:00
Remarks [Remarks] Fix usage of enum class 2019-05-30 22:01:56 +00:00
Support [X86] Resync Host.cpp with compiler-rt's cpu_model.c to enable 0x55 to be identified as cascadelake when avx512vnni is detected. 2019-05-31 19:18:07 +00:00
TableGen TableGen: Handle nontrivial foreach range bounds 2019-05-22 21:28:20 +00:00
Target [COFF, ARM64] Add CodeView register mapping 2019-05-31 23:43:31 +00:00
Testing [Testing] Move clangd::Annotations to llvm testing support 2019-04-25 10:08:31 +00:00
TextAPI [TextAPI] Fix Symbol::dump which was failing to append the SymbolKind string. 2019-04-29 18:25:04 +00:00
ToolDrivers [llvm-ar][libObject] Fix relative paths when nesting thin archives. 2019-02-13 23:39:41 +00:00
Transforms [SimplifyLibCalls] Fold more fortified functions into non-fortified variants 2019-05-31 22:41:36 +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 Recommit [Object] Change object::SectionRef::getContents() to return Expected<StringRef> 2019-05-16 13:24:04 +00:00
CMakeLists.txt [OptRemarks] Make OptRemarks more generic: rename OptRemarks to Remarks 2019-03-05 20:45:17 +00:00
LLVMBuild.txt [OptRemarks] Make OptRemarks more generic: rename OptRemarks to Remarks 2019-03-05 20:45:17 +00:00