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522877813a
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Akira Hatanaka 522877813a [DAGCombine] Fix a bug in MergeConsecutiveStores. 
The bug manifests when there are two loads and two stores chained as follows in
a DAG,

(ld v3f32) -> (st f32) -> (ld v3f32) -> (st f32)

and the stores' values are extracted from the preceding vector loads.

MergeConsecutiveStores would replace the first store in the chain with the
merged vector store, which would create a cycle between the merged store node
and the last load node that appears in the chain.

This commits fixes the bug by replacing the last store in the chain instead.

rdar://problem/20275084

Differential Revision: http://reviews.llvm.org/D8849


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234430 91177308-0d34-0410-b5e6-96231b3b80d8
2015-04-08 20:34:53 +00:00
autoconf Try to unbreak Clang build to export LLVM_ABI_BREAKING_CHECKS, fixup for r233310. 2015-04-01 11:46:15 +00:00
bindings Go bindings: make various DIBuilder arguments optional. 2015-04-08 20:18:57 +00:00
cmake Disable all link optimizations in a debug build. 2015-04-06 15:04:31 +00:00
docs [lib/Fuzzer] show how to find Heartbleed with LibFuzzer 2015-04-08 06:16:11 +00:00
examples llvm/examples/BrainF: Give an explicit pointee type to ConstantExpr::getGetElementPtr(ty...), according to r233938. 2015-04-02 22:44:00 +00:00
include Don't repeat names in comments. 2015-04-08 20:16:23 +00:00
lib [DAGCombine] Fix a bug in MergeConsecutiveStores. 2015-04-08 20:34:53 +00:00
projects Reverse the order libc++ and libc++abi are added in CMake. 2015-03-04 01:16:43 +00:00
test [DAGCombine] Fix a bug in MergeConsecutiveStores. 2015-04-08 20:34:53 +00:00
tools IR: Stop using DIDescriptor::is*() and auto-casting 2015-04-06 23:18:49 +00:00
unittests IR: Remove MDTupleTypedArrayWrapper::operator MDTuple*() 2015-04-07 16:50:39 +00:00
utils Revert r234389. It really was needed but really should have been cstring instead of string.h 2015-04-08 06:03:17 +00:00
.arcconfig
.clang-format
.clang-tidy Enable display of compiler diagnostics in clang-tidy by default. 2014-10-29 17:29:38 +00:00
.gitignore Ignore compile_commands.json only at the root of the tree. 2015-03-26 18:55:42 +00:00
CMakeLists.txt Enable W4 warnings by default for MSVC builds 2015-04-07 19:01:01 +00:00
CODE_OWNERS.TXT Tom is also responsible for the 3.6 branch. 2015-03-16 18:15:27 +00:00
configure Try to unbreak Clang build to export LLVM_ABI_BREAKING_CHECKS, fixup for r233310. 2015-04-01 11:46:15 +00:00
CREDITS.TXT
LICENSE.TXT Update for a new year. 2015-03-12 01:25:29 +00:00
llvm.spec.in
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in Try to unbreak Clang build to export LLVM_ABI_BREAKING_CHECKS, fixup for r233310. 2015-04-01 11:46:15 +00:00
Makefile.rules Add support for SunOS function/data sections and associated 2015-03-03 20:54:29 +00:00
README.txt Revert test commit at revision 233535. 2015-03-30 12:39:03 +00:00

README.txt 

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