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Craig Topper dbc9567673 [X86] Correct the scheduling data for register forms of XCHG and XADD on Intel CPUs. 
The XCHG16rr/XCHG32rr/XCHG64rr instructions should be 3 uops just like XCHG8rr. I believe they're just implemented as 3 move uops with a temporary register.

XADD is probably 2 moves and an add also using a temporary register.

Change the latency for both from 2 cycles to 3 cycles. Only 2 of the uops are serialized in their execution, the move into the temporary and the move out of the temporary. The move from one GPR to the other should be able to go in parallel with this if there are ALU resources available.

llvm-svn: 330349
2018-04-19 18:00:17 +00:00
bindings [llgo] Move SetSubprogram 2018-04-07 16:26:59 +00:00
cmake [cmake] Improve pthread_[gs]etname_np detection code 2018-04-18 13:13:27 +00:00
docs [AMDGPU] Add gfx902 product names 2018-04-14 01:58:10 +00:00
examples [ORC] Create a new SymbolStringPool by default in ExecutionSession constructor. 2018-04-02 20:57:56 +00:00
include Lowering x86 adds/addus/subs/subus intrinsics (llvm part) 2018-04-19 12:13:30 +00:00
lib [X86] Correct the scheduling data for register forms of XCHG and XADD on Intel CPUs. 2018-04-19 18:00:17 +00:00
projects [cmake] Support moving debuginfo-tests to llvm/projects 2017-12-12 17:06:08 +00:00
resources
runtimes [CMake][runtimes] Process common options in runtimes build 2018-04-11 05:18:03 +00:00
test [X86] Correct the scheduling data for register forms of XCHG and XADD on Intel CPUs. 2018-04-19 18:00:17 +00:00
tools [llvm-objdump] Print "..." instead of random data for virtual sections 2018-04-19 17:02:57 +00:00
unittests [Unittests] Fix plugins test 2018-04-19 14:02:46 +00:00
utils [llvm-exegesis] Fix PfmIssueCountersTable creation 2018-04-19 10:59:49 +00:00
.arcconfig [llvm] Set up .arcconfig to point to Diffusion L repository 2018-01-12 15:37:41 +00:00
.clang-format
.clang-tidy
.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 [llvm-exegesis] Add a flag to disable libpfm even if present. 2018-04-11 07:32:43 +00:00
CODE_OWNERS.TXT CODE_OWNERS: Take ownership of C API. 2018-04-17 01:09:12 +00:00
configure
CREDITS.TXT Add myself to CREDITS.txt 2018-01-29 17:02:34 +00:00
LICENSE.TXT Bump year to 2017 in LICENSE.txt 2017-01-12 18:02:42 +00:00
llvm.spec.in
LLVMBuild.txt
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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