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Andrea Di Biagio 24700e66e8 [X86][BtVer2] Remove wrong ReadAdvance from AVX vbroadcast(ss|sd|f128) instructions. 
The presence of a ReadAdvance for input operand #0 is problematic
because it changes the input latency of the register used as the base address
for the folded load.

A broadcast cannot start executing if the load address hasn't been computed yet.

In the llvm-mca example, the VBROADCASTSS is dependent on the address generated
by the LEAQ.  That means, it cannot start until LEAQ reaches the write-back
stage. If we apply ReadAdvance, then we wrongly assume that the load can start 3
cycles in advance.

Differential Revision: https://reviews.llvm.org/D51534

llvm-svn: 341222
2018-08-31 16:05:48 +00:00
benchmarks Pull google/benchmark library to the LLVM tree 2018-08-28 09:42:41 +00:00
bindings [AArch64] Add Tiny Code Model for AArch64 2018-08-22 11:31:39 +00:00
cmake Remove LIT_SITE_CFG_IN_FOOTER, llvm 2018-08-30 22:13:34 +00:00
docs [llvm-mca] Report the number of dispatched micro opcodes in the DispatchStatistics view. 2018-08-30 10:50:20 +00:00
examples [ORC] Update JITCompileCallbackManager to support multi-threaded code. 2018-05-30 01:57:45 +00:00
include [XRay] FDR Record Producer/Consumer Implementation 2018-08-31 08:04:56 +00:00
lib [X86][BtVer2] Remove wrong ReadAdvance from AVX vbroadcast(ss|sd|f128) instructions. 2018-08-31 16:05:48 +00:00
projects
resources
runtimes Revert "[CMake] Pass Clang defaults to runtimes builds" 2018-07-13 20:01:55 +00:00
test [X86][BtVer2] Remove wrong ReadAdvance from AVX vbroadcast(ss|sd|f128) instructions. 2018-08-31 16:05:48 +00:00
tools [llvm-objdump] Keep the memory buffer from the dSYM alive when using -g -dsym 2018-08-31 13:10:54 +00:00
unittests [XRay] Attempt to fix failure on Windows 2018-08-31 10:03:52 +00:00
utils Add a utility script to stress test the demangler. 2018-08-30 20:53:48 +00:00
.arcconfig
.clang-format
.clang-tidy
.gitattributes [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
.gitignore
CMakeLists.txt Revert "[CMake] Use LLVM_ENABLE_IDE instead of CMAKE_CONFIGURATION_TYPES" 2018-08-30 09:32:09 +00:00
CODE_OWNERS.TXT Add owner for llvm-objcopy 2018-08-09 22:05:19 +00:00
configure
CREDITS.TXT Update my information in the CREDITS file. 2018-06-15 20:02:11 +00:00
LICENSE.TXT Update copyright year to 2018. 2018-06-18 12:22:17 +00:00
llvm.spec.in
LLVMBuild.txt
README.txt Test commit: remove a blank line 2018-06-08 21:21:55 +00:00
RELEASE_TESTERS.TXT Remove myself from the release testers list. (NFC) 2018-06-20 21:25:50 +00:00

README.txt 

The LLVM Compiler Infrastructure
================================

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Please see the documentation provided in docs/ for further
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