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llvm-project/llvm/test
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Roman Lebedev 847938925b [NFC][InstSimplify] Add tests for shl nuw C, %x -> C fold. 
%r = shl nuw i8 C, %x

As per langref: If the nuw keyword is present, then the shift produces
                a poison value if it shifts out any non-zero bits.
Thus, if the sign bit is set on C, then %x can only be 0,
which means that %r can only be C.

https://rise4fun.com/Alive/WMk
Was mentioned in D47428 review.

llvm-svn: 334200
 		2018-06-07 14:18:38 +00:00
..
Analysis [X86][SSE] Use multiplication scale factors for v8i16 SHL on pre-AVX2 targets. 2018-06-05 15:17:39 +00:00
Assembler [ThinLTO] Fix a few more test match issues 2018-05-26 03:50:29 +00:00
Bindings [LLVM-C] [OCaml] Remove LLVMAddBBVectorizePass 2018-05-28 16:58:10 +00:00
Bitcode [ThinLTO] Fix a few more test match issues 2018-05-26 03:50:29 +00:00
BugPoint
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CodeGen [x86] add tests for backwards propagate mask bug (PR37060, PR37667); NFC 2018-06-07 14:11:18 +00:00
DebugInfo [Debugify] Add a quiet mode to suppress warnings 2018-06-06 19:05:41 +00:00
Examples
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ExecutionEngine [PowerPC] fix broken JIT-compiled code with tail call optimization 2018-05-30 04:48:29 +00:00
Feature Restore the LoopInstSimplify pass, reverting r327329 that removed it. 2018-05-25 01:32:36 +00:00
FileCheck
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Instrumentation [msan] Don't check divisor shadow in fdiv. 2018-05-18 20:19:53 +00:00
Integer
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JitListener [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
LTO [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
Linker [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
MC [X86] Properly disassemble gather/scatter instructions where xmm4/ymm4/zmm4 are used as the index. 2018-06-06 19:15:15 +00:00
Object Implemented sane default for llvm-objdump's relocation Value format 2018-06-01 05:31:58 +00:00
ObjectYAML Resubmit [pdb] Change /DEBUG:GHASH to emit 8 byte hashes." 2018-05-17 22:55:15 +00:00
Other SpeculativeExecution Pass: Set PreserveCFG to avoid unnecessary analyses invalidation. 2018-06-07 00:19:29 +00:00
SafepointIRVerifier SafepointIRVerifier is made unreachable block tolerant 2018-05-23 05:54:55 +00:00
SymbolRewriter
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TableGen TableGen: Streamline the semantics of NAME 2018-06-04 14:26:05 +00:00
ThinLTO/X86 [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
Transforms [NFC][InstSimplify] Add tests for shl nuw C, %x -> C fold. 2018-06-07 14:18:38 +00:00
Unit
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Verifier [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
YAMLParser
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tools [llvm-strip] Expose --strip-unneeded option 2018-06-07 10:05:25 +00:00
.clang-format
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CMakeLists.txt [tools] Add missing test dependency 2018-05-07 22:00:59 +00:00
TestRunner.sh
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lit.cfg.py [tools] Adjust the lit config for llvm-strip 2018-05-07 21:07:01 +00:00
lit.site.cfg.py.in Remove 'abi-breaking-checks' lit feature. 2018-05-09 12:39:39 +00:00