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2537f3c659
llvm/lib
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Arnold Schwaighofer 2537f3c659 X86 cost model: Differentiate cost for vector shifts of constants 
SSE2 has efficient support for shifts by a scalar. My previous change of making
shifts expensive did not take this into account marking all shifts as expensive.
This would prevent vectorization from happening where it is actually beneficial.

With this change we differentiate between shifts of constants and other shifts.

radar://13576547

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178808 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-04 23:26:24 +00:00
..
Analysis CostModel: Add parameter to instruction cost to further classify operand values 2013-04-04 23:26:21 +00:00
Archive Fix auto_ptr is deprecated warnings 2013-02-26 21:20:35 +00:00
AsmParser Unify clang/llvm attributes for asan/tsan/msan (LLVM part) 2013-02-26 06:58:09 +00:00
Bitcode Whitespace cleanup 2013-04-01 02:28:07 +00:00
CodeGen CostModel: Add parameter to instruction cost to further classify operand values 2013-04-04 23:26:21 +00:00
DebugInfo Fix missing std::. Not sure how this compiles for anyone else. 2013-03-21 00:57:21 +00:00
ExecutionEngine Add support for vector data types in the LLVM interpreter. 2013-04-01 15:53:30 +00:00
IR Measure time that IR parsing took as part of the -time-passes measurement. 2013-04-03 15:33:45 +00:00
IRReader Measure time that IR parsing took as part of the -time-passes measurement. 2013-04-03 15:33:45 +00:00
Linker Specutively revert r178130. 2013-03-27 17:54:41 +00:00
MC Fix the fde encoding used by mips to match gas. 2013-04-03 03:13:19 +00:00
Object Move an assert earlier in a file and check that the result of 2013-02-28 20:26:17 +00:00
Option Resort the #include lines in include/... and lib/... with the 2013-01-02 10:22:59 +00:00
Support Ensuring that both bits are set, and not just a combination of one or the other. 2013-04-03 18:00:22 +00:00
TableGen Allow TableGen DAG arguments to be just a name. 2013-03-24 19:36:51 +00:00
Target X86 cost model: Differentiate cost for vector shifts of constants 2013-04-04 23:26:24 +00:00
Transforms Reassociate: Avoid iterator invalidation. 2013-04-04 21:15:42 +00:00
CMakeLists.txt Split out the IRReader header and the utility functions it provides into 2013-03-26 02:25:37 +00:00
LLVMBuild.txt Split out the IRReader header and the utility functions it provides into 2013-03-26 02:25:37 +00:00
Makefile Split out the IRReader header and the utility functions it provides into 2013-03-26 02:25:37 +00:00