llvm-project/llvm
Elad Cohen 22ba97a0a6 [SelectionDAG] When scalarizing vselect, don't assert on
a legal cond operand.

When scalarizing the result of a vselect, the legalizer currently expects
to already have scalarized the operands. While this is true for the true/false
operands (which have the same type as the result), it is not case for the
condition operand. On X86 AVX512, v1i1 is legal - this leads to operations such
as '< N x type> vselect < N x i1> < N x type> < N x type>' where < N x type > is
illegal to hit an assertion during the scalarization.

The handling is similar to r205625.
This also exposes the fact that (v1i1 extract_subvector) should be legal
and selectable on AVX512 - We do this by custom lowering to vector_extract_elt.
This still leaves us in some cases with redundant dag nodes which will be
combined in a separate soon to come patch.

This fixes pr33349.

Differential revision: https://reviews.llvm.org/D36511

llvm-svn: 310552
2017-08-10 07:44:23 +00:00
..
bindings Update the Go bindings for r309426 (remove offset from llvm.dbg.value) 2017-07-28 22:44:44 +00:00
cmake [OCaml] Pass -D/-UNDEBUG through to ocamlc 2017-07-29 08:10:24 +00:00
docs LangRef: Fix/improve cmpxchg wording 2017-08-09 22:22:04 +00:00
examples Defeat another -Wunused-but-set-variable warning 2017-07-19 15:06:31 +00:00
include [X86][Asm] Allow negative immediate to appear before bracketed expression 2017-08-09 21:49:17 +00:00
lib [SelectionDAG] When scalarizing vselect, don't assert on 2017-08-10 07:44:23 +00:00
projects
resources
runtimes [CMake] Remove redundant logic in runtimes/CMakeList.txt 2017-07-24 17:26:28 +00:00
test [SelectionDAG] When scalarizing vselect, don't assert on 2017-08-10 07:44:23 +00:00
tools [llvm-cov] Rearrange entries in report index. 2017-08-09 20:43:31 +00:00
unittests [Support] PR33388 - Fix formatv_object move constructor 2017-08-09 13:47:01 +00:00
utils [globalisel][tablegen] Remove unnecessary ; to satisfy ubuntu-gcc7.1-werror. 2017-08-08 13:21:26 +00:00
.arcconfig
.clang-format
.clang-tidy
.gitignore
CMakeLists.txt [GlobalISel] Make GlobalISel a non-optional library. 2017-08-03 21:52:25 +00:00
CODE_OWNERS.TXT Remove the BBVectorize pass. 2017-06-30 07:09:08 +00:00
CREDITS.TXT Another test commit 2017-07-01 03:24:06 +00:00
LICENSE.TXT
LLVMBuild.txt
README.txt
RELEASE_TESTERS.TXT [RelTest] Diana is doing both releases now 2017-07-14 08:33:52 +00:00
configure
llvm.spec.in

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