llvm-project/llvm
Simon Pilgrim bbf4af3109 [X86][SSE] Remove XFormVExtractWithShuffleIntoLoad to prevent legalization infinite loops (PR43971)
As detailed in PR43971/D70267, the use of XFormVExtractWithShuffleIntoLoad causes issues where we end up in infinite loops of extract(targetshuffle(vecload)) -> extract(shuffle(vecload)) -> extract(vecload) -> extract(targetshuffle(vecload)), there are just too many legalization checks at every stage that we can't guarantee that extract(shuffle(vecload)) -> scalarload can occur.

At the moment we see a number of minor regressions as we don't fold extract(shuffle(vecload)) -> scalarload before legal ops, these can be addressed in future patches and extension of X86ISelLowering's combineExtractWithShuffle.
2019-11-19 11:55:44 +00:00
..
benchmarks
bindings Revert "[Bindings][Go] Fix go.test failure due to missing argument" 2019-11-19 09:59:43 +08:00
cmake Fix use of add_llvm_tool in projects that build no targets 2019-11-14 10:53:46 +00:00
docs [docs] Fix broken links in Kaleidoscope chapter 3 2019-11-17 21:35:02 -05:00
examples [ORC] Add a utility to support dumping JIT'd objects to disk for debugging. 2019-11-14 21:27:19 -08:00
include [ThinLTO] Make ValueInfo::operator bool() explicit 2019-11-19 12:46:09 +03:00
lib [X86][SSE] Remove XFormVExtractWithShuffleIntoLoad to prevent legalization infinite loops (PR43971) 2019-11-19 11:55:44 +00:00
projects
resources
runtimes
test [X86][SSE] Remove XFormVExtractWithShuffleIntoLoad to prevent legalization infinite loops (PR43971) 2019-11-19 11:55:44 +00:00
tools bugpoint: Add option to disable attribute removal 2019-11-19 11:11:00 +05:30
unittests Add streaming/equality operators to DWARFAddressRange/DWARFLocationExpression 2019-11-19 10:34:30 +01:00
utils gn build: Merge e8a4c74f11 2019-11-19 10:34:24 +00:00
.arcconfig
.clang-format
.clang-tidy
.gitattributes
.gitignore
CMakeLists.txt [cmake] Emit an error for -DBUILD_SHARED_LIBS=ON on Windows 2019-11-14 10:19:02 -08:00
CODE_OWNERS.TXT
CREDITS.TXT
LICENSE.TXT
LLVMBuild.txt
README.txt
RELEASE_TESTERS.TXT
configure
llvm.spec.in

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