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Sanjay Patel 13a5ae58fc [InstCombine] squash is-power-of-2 that uses ctpop 
This is another intermediate IR step towards solving PR42314:
https://bugs.llvm.org/show_bug.cgi?id=42314

We can test if a value is power-of-2-or-0 using ctpop(X) < 2,
so combining that with a non-zero check of the input is the
same as testing if exactly 1 bit is set:

(X != 0) && (ctpop(X) u< 2) --> ctpop(X) == 1

Differential Revision: https://reviews.llvm.org/D63660

llvm-svn: 364153
 		2019-06-23 14:22:37 +00:00
clang Revert "builtins: relax __iso_volatile_{load,store}32" 2019-06-23 02:53:03 +00:00
clang-tools-extra [NFC] Marking test added in r363975 as unsupported on Windows. 2019-06-22 01:09:00 +00:00
compiler-rt [ASan] Use dynamic shadow on 32-bit iOS and simulators 2019-06-21 21:01:39 +00:00
debuginfo-tests Store a pointer to the return value in a static alloca and let the debugger use that 2019-06-20 17:15:21 +00:00
libclc travis: Add LLVM-8 build 2019-03-27 21:28:31 +00:00
libcxx Disable test by default 2019-06-23 03:59:32 +00:00
libcxxabi [demangle] Special case clang's creative mangling of __uuidof expressions. 2019-06-18 23:34:09 +00:00
libunwind [libunwind][AArch64] Fix libunwind::Registers_arm64::jumpto 2019-06-17 11:00:21 +00:00
lld lld/elf: Deduplicate undefined symbol diagnostics 2019-06-20 18:25:57 +00:00
lldb [lit] Deduplicate logic in toolchain.py 2019-06-21 23:12:25 +00:00
llgo IR: Support parsing numeric block ids, and emit them in textual output. 2019-03-22 18:27:13 +00:00
llvm [InstCombine] squash is-power-of-2 that uses ctpop 2019-06-23 14:22:37 +00:00
openmp [OpenMP][libomptarget] Add support for declare target to clause under unified memory 2019-06-19 15:48:10 +00:00
parallel-libs Fix typos throughout the license files that somehow I and my reviewers 2019-01-21 09:52:34 +00:00
polly [test] Add wrap flags after D61934. 2019-06-17 19:17:07 +00:00
pstl [pstl] Default to the serial backend when unspecified 2019-06-20 17:56:51 +00:00
.arcconfig Update monorepo .arcconfig with new project callsign. 2019-01-31 14:34:59 +00:00
.clang-format Add .clang-tidy and .clang-format files to the toplevel of the 2019-01-29 16:43:16 +00:00
.clang-tidy Disable tidy checks with too many hits 2019-02-01 11:20:13 +00:00
.gitignore Add a reduced copy of the llvm .gitignore 2019-04-09 00:52:49 +00:00
README.md
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README.md

The LLVM Compiler Infrastructure

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