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98dd66445e
llvm-mirror/lib
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Andrea Di Biagio 98dd66445e [X86] Improve the lowering of BITCAST from MVT::f64 to MVT::v4i16/MVT::v8i8. 
This patch teaches the x86 backend how to efficiently lower ISD::BITCAST dag
nodes from MVT::f64 to MVT::v4i16 (and vice versa), and from MVT::f64 to
MVT::v8i8 (and vice versa).

This patch extends the logic from revision 208107 to also handle MVT::v4i16
and MVT::v8i8. Also, this patch correctly propagates Undef values when
performing the widening of a vector (example: when widening from v2i32 to
v4i32, the upper 64bits of the resulting vector are 'undef').

llvm-svn: 209451
2014-05-22 16:21:39 +00:00
..
Analysis Fix a bug in SCEV's backedge taken count computation from my prior fix in Jan. 2014-05-22 00:37:03 +00:00
AsmParser [modules] Add module maps for LLVM. These are not quite ready for prime-time 2014-05-21 02:46:14 +00:00
Bitcode [modules] Add module maps for LLVM. These are not quite ready for prime-time 2014-05-21 02:46:14 +00:00
CodeGen Remove unused variable. 2014-05-22 05:33:03 +00:00
DebugInfo [modules] Add module maps for LLVM. These are not quite ready for prime-time 2014-05-21 02:46:14 +00:00
ExecutionEngine [RuntimeDyld] Fix x86-64 MachO GOT relocation handling. 2014-05-19 19:21:25 +00:00
IR Add support for missed and analysis optimization remarks. 2014-05-22 14:19:46 +00:00
IRReader [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 2014-04-15 06:32:26 +00:00
LineEditor [CMake] Use LINK_LIBS instead of target_link_libraries(). 2014-02-26 06:41:29 +00:00
Linker Use create methods since msvc doesn't handle delegating constructors. 2014-05-17 21:29:57 +00:00
LTO Delete getAliasedGlobal. 2014-05-16 22:37:03 +00:00
MC MC: initialise MCAsmParser variable 2014-05-22 06:02:59 +00:00
Object Update MachOObjectFile::getSymbolAddress so it returns UnknownAddressOrSize 2014-05-20 23:04:47 +00:00
Option Options: Use erase_if to remove Args from the list. 2014-05-18 15:14:13 +00:00
ProfileData ProfileData: Allow multiple profiles in RawInstrProfReader 2014-05-16 00:38:00 +00:00
Support Extend sys::getHostCPUFeatures to work on AArch64 platforms 2014-05-22 11:44:34 +00:00
TableGen [modules] Add module maps for LLVM. These are not quite ready for prime-time 2014-05-21 02:46:14 +00:00
Target [X86] Improve the lowering of BITCAST from MVT::f64 to MVT::v4i16/MVT::v8i8. 2014-05-22 16:21:39 +00:00
Transforms Add support for missed and analysis optimization remarks. 2014-05-22 14:19:46 +00:00
CMakeLists.txt ProfileData: Introduce the InstrProfReader interface and a text reader 2014-03-21 17:24:48 +00:00
LLVMBuild.txt ProfileData: Introduce the InstrProfReader interface and a text reader 2014-03-21 17:24:48 +00:00
Makefile ProfileData: Introduce the InstrProfReader interface and a text reader 2014-03-21 17:24:48 +00:00