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Craig Topper 55a71b575c Revert r359392 and r358887 
Reverts "[X86] Remove (V)MOV64toSDrr/m and (V)MOVDI2SSrr/m. Use 128-bit result MOVD/MOVQ and COPY_TO_REGCLASS instead"
Reverts "[TargetLowering][AMDGPU][X86] Improve SimplifyDemandedBits bitcast handling"

Eric Christopher and Jorge Gorbe Moya reported some issues with these patches to me off list.

Removing the CodeGenOnly instructions has changed how fneg is handled during fast-isel with sse/sse2. We're now emitting fsub -0.0, x instead
moving to the integer domain(in a GPR), xoring the sign bit, and then moving back to xmm. This is because the fast isel table no longer
contains an entry for (f32/f64 bitcast (i32/i64)) so the target independent fneg code fails. The use of fsub changes the behavior of nan with
respect to -O2 codegen which will always use a pxor. NOTE: We still have a difference with double with -m32 since the move to GPR doesn't work
there. I'll file a separate PR for that and add test cases.

Since removing the CodeGenOnly instructions was fixing PR41619, I'm reverting r358887 which exposed that PR. Though I wouldn't be surprised
if that bug can still be hit independent of that.

This should hopefully get Google back to green. I'll work with Simon and other X86 folks to figure out how to move forward again.

llvm-svn: 360066
 		2019-05-06 19:29:24 +00:00
clang [OpenMP][Clang] Support for target math functions 2019-05-06 18:19:15 +00:00
clang-tools-extra [clangd] Expose whether no-compile completion was used. 2019-05-06 12:03:26 +00:00
compiler-rt Add libc++ to link XRay test cases if libc++ is used to build CLANG 2019-05-06 17:45:21 +00:00
debuginfo-tests Set config.lit_tools_dir, which is needed by lit.llvm.initialize. 2018-11-06 21:54:27 +00:00
libclc travis: Add LLVM-8 build 2019-03-27 21:28:31 +00:00
libcxx [libcxx] Don't use -fvisibility-global-new-delete-hidden when not defining them 2019-05-06 01:22:28 +00:00
libcxxabi [libcxxabi] Don't use -fvisibility-global-new-delete-hidden when not defining them 2019-05-06 01:25:31 +00:00
libunwind [gn] Support for building libunwind 2019-05-02 17:29:37 +00:00
lld [AMDGPU][test] Define local symbols used in amdgpu-relocs.s 2019-05-06 14:17:59 +00:00
lldb [lldb] [lit] Use more readable consts and arrays in register read tests 2019-05-06 13:06:43 +00:00
llgo IR: Support parsing numeric block ids, and emit them in textual output. 2019-03-22 18:27:13 +00:00
llvm Revert r359392 and r358887 2019-05-06 19:29:24 +00:00
openmp Add non-SSE wrapper for __kmp_{load,store}_mxcsr 2019-05-06 17:58:03 +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 Apply include-what-you-use #include removal suggestions. NFC. 2019-03-28 20:19:49 +00:00
pstl [pstl] Make the default backend be the serial backend and always provide parallel policies 2019-04-24 20:12:36 +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.