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Anna Thomas a818c43889 [InstCombine] Avoid incorrect folding of select into phi nodes when incoming element is a vector type 
Summary:
We are incorrectly folding selects into phi nodes when the incoming value of a phi
node is a constant vector. This optimization is done in `FoldOpIntoPhi` when the
select condition is a phi node with constant incoming values.
Without the fix, we are miscompiling (i.e. incorrectly folding the
select into the phi node) when the vector contains non-zero
elements.
This patch fixes the miscompile and we will correctly fold based on the
select vector operand (see added test cases).

Reviewers: majnemer, sanjoy, spatel

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D31189

llvm-svn: 298845
2017-03-27 13:52:51 +00:00
bindings [DebugInfo] Emit address space with DW_AT_address_class attribute for pointer and reference types 2017-03-08 23:55:44 +00:00
cmake Fix evaluation of LLVM_DEFINITIONS 2017-03-21 04:03:24 +00:00
docs Document how to fetch monorepo SVN revision notes 2017-03-24 20:47:41 +00:00
examples llvm/examples/Kaleidoscope/BuildingAJIT: More fixup corresponding to r295636. 2017-02-20 10:07:41 +00:00
include ADT: Add range helpers for pointer_ and pointee_iterator 2017-03-27 12:56:12 +00:00
lib [InstCombine] Avoid incorrect folding of select into phi nodes when incoming element is a vector type 2017-03-27 13:52:51 +00:00
projects [cmake] Include openmp with add_llvm_external_project 2017-03-07 18:54:17 +00:00
resources
runtimes [CMake] Support single target builtins build on Darwin 2017-03-24 02:21:11 +00:00
test [InstCombine] Avoid incorrect folding of select into phi nodes when incoming element is a vector type 2017-03-27 13:52:51 +00:00
tools [llvm-readobj] Prefer ILT to IAT for reading COFF imports 2017-03-26 17:10:11 +00:00
unittests ADT: Add range helpers for pointer_ and pointee_iterator 2017-03-27 12:56:12 +00:00
utils [tablegen] Use categories on options that only matter to one emitter. 2017-03-27 13:15:13 +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
.clang-tidy .clang-tidy: correct style name is 'camelBack' not 'lowerCase'. 2016-09-13 19:04:26 +00:00
.gitignore [.gitignore] Update .gitignore to ignore a nested build directory 2017-02-24 23:09:30 +00:00
CMakeLists.txt [CMake] Provide an option to disable runtimes build 2017-03-23 22:40:10 +00:00
CODE_OWNERS.TXT CODE_OWNERS: Take code ownership of instruction scheduling. 2017-03-10 18:34:37 +00:00
configure
CREDITS.TXT CODE_OWNERS: Take code ownership of instruction scheduling. 2017-03-10 18:34:37 +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. Added a blank line. 2017-03-06 20:45:33 +00:00
RELEASE_TESTERS.TXT Update the release tester for MIPS. NFC. 2017-01-17 11:00:28 +00:00

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