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David Bolvansky f947608ddf [InstCombine] Fold Select with AND/OR condition 
Summary:
Fold
```
%A = icmp ne i8 %X, %V1
%B = icmp ne i8 %X, %V2
%C = or i1 %A, %B
%D = select i1 %C, i8 %X, i8 %V1
ret i8 %D
  =>
ret i8 %X

Fixes https://bugs.llvm.org/show_bug.cgi?id=38334
Proof: https://rise4fun.com/Alive/plI8

Reviewers: spatel, lebedev.ri

Reviewed By: lebedev.ri

Subscribers: craig.topper, llvm-commits

Differential Revision: https://reviews.llvm.org/D49919

llvm-svn: 338191
 		2018-07-28 06:55:51 +00:00
clang [Sema][ObjC] Warn when a method declared in a protocol takes a 2018-07-28 04:06:13 +00:00
clang-tools-extra [clang-tidy] Fix a crash in fuchsia-multiple-inheritance 2018-07-27 14:05:39 +00:00
compiler-rt [test] Use printf instead of C++ iostream, NFC. 2018-07-26 18:23:40 +00:00
debuginfo-tests [DebugInfo] LowerDbgDeclare: Add derefs when handling CallInst users 2018-07-26 20:56:53 +00:00
libclc atom: Use volatile pointers for cl_khr_{global,local}_int32_{base,extended}_atomics 2018-06-21 19:27:39 +00:00
libcxx [libc++] Exclude posix_l/strtonum fallback inclusion for newlib > 2.4 2018-07-27 20:02:58 +00:00
libcxxabi [demangler] Fix an oss-fuzz bug from r338138 2018-07-28 04:06:30 +00:00
libunwind [CMake] Include CMakeDependentOption in libunwind 2018-07-24 23:42:51 +00:00
lld Reland r338088, "ELF: Make --print-icf-sections output deterministic." 2018-07-27 19:10:44 +00:00
lldb Add the actually calculated completions to COMPLETION_MSG 2018-07-27 23:42:34 +00:00
llgo Update copyright year to 2018. 2018-06-18 12:22:17 +00:00
llvm [InstCombine] Fold Select with AND/OR condition 2018-07-28 06:55:51 +00:00
openmp [OMPT] Fix OMPT callbacks for the taskloop construct and add testcase 2018-07-27 18:13:24 +00:00
parallel-libs Update copyright year to 2018. 2018-06-18 12:22:17 +00:00
polly [test] Remove non-JSPON comments in JSCOP file. NFC. 2018-07-28 01:11:45 +00:00
README.md
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README.md

Low Level Virtual Machine (LLVM)

This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments.