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a9839b29b1
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Craig Topper a9839b29b1 [X86] Add separate intrinsics for scalar FMA4 instructions. 
Summary:
These instructions zero the non-scalar part of the lower 128-bits which makes them different than the FMA3 instructions which pass through the non-scalar part of the lower 128-bits.

I've only added fmadd because we should be able to derive all other variants using operand negation in the intrinsic header like we do for AVX512.

I think there are still some missed negate folding opportunities with the FMA4 instructions in light of this behavior difference that I hadn't noticed before.

I've split the tests so that we can use different intrinsics for scalar testing between the two. I just copied the tests split the RUN lines and changed out the scalar intrinsics.

fma4-fneg-combine.ll is a new test to make sure we negate the fma4 intrinsics correctly though there are a couple TODOs in it.

Reviewers: RKSimon, spatel

Reviewed By: RKSimon

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D39851

llvm-svn: 318984
2017-11-25 18:32:43 +00:00
bindings Update go bindings to use new functions from rL317135. 2017-11-02 10:22:26 +00:00
cmake [CMake] Allow for Solaris ld -V output on stdout 2017-11-17 17:12:14 +00:00
docs [LV] Model masking in VPlan, introducing VPInstructions 2017-11-20 12:01:47 +00:00
examples Fix broken links to the Itanium CXX ABI 2017-09-12 00:19:11 +00:00
include [X86] Add separate intrinsics for scalar FMA4 instructions. 2017-11-25 18:32:43 +00:00
lib [X86] Add separate intrinsics for scalar FMA4 instructions. 2017-11-25 18:32:43 +00:00
projects Re-revert "Refactor debuginfo-tests." 2017-11-21 01:20:28 +00:00
resources In MSVC builds embed a VERSIONINFO resource in our exe and DLL files. 2015-06-12 15:58:29 +00:00
runtimes [CMake][runtimes] Don't passthrough prefixes for non-default targets 2017-11-17 23:51:53 +00:00
test [X86] Add separate intrinsics for scalar FMA4 instructions. 2017-11-25 18:32:43 +00:00
tools Remove unnecessary code. 2017-11-22 20:02:57 +00:00
unittests [YAMLParser] Don't crash on null keys in KeyValueNodes. 2017-11-23 20:57:20 +00:00
utils Reverted rL318911 since it broke the sanitizer-windows. 2017-11-23 13:23:21 +00:00
.arcconfig project_id is from another era in phabricator land and does not provide any value. 2016-09-27 15:47:29 +00:00
.clang-format Test commit. 2014-03-02 13:08:46 +00:00
.clang-tidy .clang-tidy: correct style name is 'camelBack' not 'lowerCase'. 2016-09-13 19:04:26 +00:00
.gitattributes [MC] Fix regression tests on Windows when git “core.autocrlf” is set to true. 2017-11-17 21:59:43 +00:00
.gitignore gitignore: Ignore .vs folder (VS2017 config files) 2017-04-08 00:16:58 +00:00
CMakeLists.txt Re-revert "Refactor debuginfo-tests." 2017-11-21 01:20:28 +00:00
CODE_OWNERS.TXT Update my email addresses, NFC. 2017-10-26 10:16:54 +00:00
configure Remove autoconf support 2016-01-26 21:29:08 +00:00
CREDITS.TXT Add myself to CREDITS.txt 2017-09-18 14:33:39 +00:00
LICENSE.TXT Bump year to 2017 in LICENSE.txt 2017-01-12 18:02:42 +00:00
llvm.spec.in [Sparc] Implement i64 load/store support for 32-bit sparc. 2015-08-10 19:11:39 +00:00
LLVMBuild.txt Remove the very substantial, largely unmaintained legacy PGO 2013-10-02 15:42:23 +00:00
README.txt Test commit access 2017-08-18 02:39:28 +00:00
RELEASE_TESTERS.TXT Update my email addresses, NFC. 2017-10-26 10:16:54 +00:00

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