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c34693f6ef
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Quentin Colombet c34693f6ef [DAGCombiner] Slice a big load in two loads when the element are next to each 
other in memory and the target has paired load and performs post-isel loads
combining.

E.g., this optimization will transform something like this:
 a = load i64* addr
 b = trunc i64 a to i32
 c = lshr i64 a, 32
 d = trunc i64 c to i32

into:
 b = load i32* addr1
 d = load i32* addr2
Where addr1 = addr2 +/- sizeof(i32), if the target supports paired load and
performs post-isel loads combining.

One should overload TargetLowering::hasPairedLoad to provide this information.
The default is false.

<rdar://problem/14477220>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192471 91177308-0d34-0410-b5e6-96231b3b80d8
2013-10-11 18:01:14 +00:00
autoconf Revert "Revert "Windows: Add support for unicode command lines"" 2013-10-07 01:00:07 +00:00
bindings
cmake cmake: don't set LLVM_COMPILER_IS_GCC_COMPATIBLE when using clang-cl 2013-10-07 22:03:23 +00:00
docs Add missing releases. 2013-10-09 17:37:04 +00:00
examples
include [DAGCombiner] Slice a big load in two loads when the element are next to each 2013-10-11 18:01:14 +00:00
lib [DAGCombiner] Slice a big load in two loads when the element are next to each 2013-10-11 18:01:14 +00:00
projects Revert "Revert "Windows: Add support for unicode command lines"" 2013-10-07 01:00:07 +00:00
test [DAGCombiner] Slice a big load in two loads when the element are next to each 2013-10-11 18:01:14 +00:00
tools Debug Info: In DIBuilder, the context field of subprogram is updated to use 2013-10-10 18:40:01 +00:00
unittests
utils Fix handling of CHECK-DAG inside of CHECK-LABEL. 2013-10-11 16:48:02 +00:00
.arcconfig
.clang-format
.gitignore
CMakeLists.txt
CODE_OWNERS.TXT
configure Revert "Revert "Windows: Add support for unicode command lines"" 2013-10-07 01:00:07 +00:00
CREDITS.TXT
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in
Makefile.rules
README.txt

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