llvm-project/llvm
Roman Lebedev fed0f890e5
InstCombine: Negator: don't rely on complexity sorting already being performed (PR47752)
In some cases, we can negate instruction if only one of it's operands
negates. Previously, we assumed that constants would have been
canonicalized to RHS already, but that isn't guaranteed to happen,
because of InstCombine worklist visitation order,
as the added test (previously-hanging) shows.

So if we only need to negate a single operand,
we should ensure ourselves that we try constant operand first.
Do that by re-doing the complexity sorting ourselves,
when we actually care about it.

Fixes https://bugs.llvm.org/show_bug.cgi?id=47752
2020-10-07 15:09:50 +03:00
..
benchmarks
bindings [bindings/go] Fix TestAttributes after D88241 2020-09-25 20:31:45 -07:00
cmake Revert "[RFC] Factor out repetitive cmake patterns for llvm-style projects" 2020-10-04 15:17:34 -07:00
docs docs: Emphasize ArrayRef over SmallVectorImpl 2020-10-06 18:13:52 -04:00
examples [ORC][examples] Temporarily remove LLJITWithChildProcess until ORC TPC lands 2020-10-01 10:25:13 +02:00
include [flang][openacc] Fix device_num and device_type clauses for init directive 2020-10-06 21:27:01 -04:00
lib InstCombine: Negator: don't rely on complexity sorting already being performed (PR47752) 2020-10-07 15:09:50 +03:00
projects
resources
runtimes [CMake] Don't use CMakePushCheckState 2020-10-02 17:13:34 -07:00
test InstCombine: Negator: don't rely on complexity sorting already being performed (PR47752) 2020-10-07 15:09:50 +03:00
tools [llvm-objcopy][NFC] fix style issues reported by clang-format. 2020-10-06 15:06:25 +03:00
unittests [Support][unittests] Enforce alignment in ConvertUTFTest 2020-10-07 09:08:41 +02:00
utils [gn build] manually port 5e4409f308 2020-10-06 18:43:49 -04:00
.clang-format
.clang-tidy
.gitattributes
.gitignore
CMakeLists.txt Guard `find_library(tensorflow_c_api ...)` by checking for TENSORFLOW_C_LIB_PATH to be set by the user 2020-09-28 22:15:55 +00:00
CODE_OWNERS.TXT Update PowerPC backend ownership in CODE_OWNERS.TXT 2020-09-14 15:45:57 -05:00
CREDITS.TXT
LICENSE.TXT
LLVMBuild.txt
README.txt
RELEASE_TESTERS.TXT
configure
llvm.spec.in

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