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4ef753a118
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Alexey Bataev 4ef753a118 [SLP] Fix for PR32036: Vectorized horizontal reduction returning wrong 
result

Summary:
If the same value is used several times as an extra value, SLP
vectorizer takes it into account only once instead of actual number of
using.
For example:
```
int val = 1;
for (int y = 0; y < 8; y++) {
  for (int x = 0; x < 8; x++) {
    val = val + input[y * 8 + x] + 3;
  }
}
```
We have 2 extra rguments: `1` - initial value of horizontal reduction
and `3`, which is added 8*8 times to the reduction. Before the patch we
added `1` to the reduction value and added once `3`, though it must be
added 64 times.

Reviewers: mkuper, mzolotukhin

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D30262

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295956 91177308-0d34-0410-b5e6-96231b3b80d8
2017-02-23 10:57:15 +00:00
bindings Go binding: Add methods for missing PassManagerBuilder C APIs 2017-02-17 05:41:05 +00:00
cmake [Support] Provide linux/magic.h fallback for older kernels 2017-02-22 18:09:15 +00:00
docs Explicitly state the behavior of inbounds with a null pointer. 2017-02-23 00:48:18 +00:00
examples llvm/examples/Kaleidoscope/BuildingAJIT: More fixup corresponding to r295636. 2017-02-20 10:07:41 +00:00
include TargetOptions: Fix not accounting for NoSignedZerosFPMath in == 2017-02-23 03:16:44 +00:00
lib [SLP] Fix for PR32036: Vectorized horizontal reduction returning wrong 2017-02-23 10:57:15 +00:00
projects
resources
runtimes [CMake] Handle common options for runtimes build 2017-01-10 19:47:05 +00:00
test [SLP] Fix for PR32036: Vectorized horizontal reduction returning wrong 2017-02-23 10:57:15 +00:00
tools Don't modify archive members unless really needed. 2017-02-21 20:40:54 +00:00
unittests Test if we can use raw strings on all platforms compiling LLVM. 2017-02-23 01:09:01 +00:00
utils tablegen: Fix android build 2017-02-21 09:19:41 +00:00
.arcconfig
.clang-format
.clang-tidy
.gitignore [AVR] Add the integrated testing tool to the .gitignore 2016-12-14 11:47:14 +00:00
CMakeLists.txt [Tablegen] Instrumenting table gen DAGGenISelDAG 2017-02-14 18:32:41 +00:00
CODE_OWNERS.TXT Collapse my two entries in CODE_OWNERS.txt 2017-02-15 23:45:21 +00:00
configure
CREDITS.TXT Revert r294228 2017-02-06 19:40:56 +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: remove a blank line. 2017-02-03 10:56:57 +00:00
RELEASE_TESTERS.TXT Update the release tester for MIPS. NFC. 2017-01-17 11:00:28 +00:00

README.txt 

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