llvm-6502/lib
Chandler Carruth b859d528f3 Make '-mtune=x86_64' assume fast unaligned memory accesses.
Summary:
Not all chips targeted by x86_64 have this feature, but a dramatically
increasing number do. Specifying a chip-specific tuning parameter will
continue to turn the feature on or off as appropriate for that
particular chip, but the generic flag should try to achieve the best
performance on the most widely available hardware. Today, the number of
chips with fast UA access dwarfs those without in the x86-64 space.

Note that this also brings LLVM's code generation for this '-march' flag
more in line with that of modern GCCs.

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D195

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169740 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-10 18:22:42 +00:00
..
Analysis Add a new visitor for walking the uses of a pointer value. 2012-12-10 08:28:39 +00:00
Archive Sort includes for all of the .h files under the 'lib' tree. These were 2012-12-04 07:12:27 +00:00
AsmParser Reorganize FastMathFlags to be a wrapper around unsigned, and streamline some interfaces. 2012-12-09 21:12:04 +00:00
Bitcode Reorganize FastMathFlags to be a wrapper around unsigned, and streamline some interfaces. 2012-12-09 21:12:04 +00:00
CodeGen Teach DAG combine to handle vector add/sub with vectors of all 0s. 2012-12-10 08:12:29 +00:00
DebugInfo Sort includes for all of the .h files under the 'lib' tree. These were 2012-12-04 07:12:27 +00:00
ExecutionEngine Adjust JIT target triple on OS X to match the current architecture. 2012-12-05 19:09:13 +00:00
Linker Use the new script to sort the includes of every file under lib. 2012-12-03 16:50:05 +00:00
MC Add C API for specifying CPU to the disassembler. 2012-12-07 23:53:27 +00:00
Object Use the new script to sort the includes of every file under lib. 2012-12-03 16:50:05 +00:00
Option Copy clang/Driver/<Option parsing stuff> to llvm. 2012-12-05 00:29:32 +00:00
Support Make NaCl naming consistent. The triple OSType is called NaCl and is represented 2012-12-04 18:37:26 +00:00
TableGen Sort includes for all of the .h files under the 'lib' tree. These were 2012-12-04 07:12:27 +00:00
Target Make '-mtune=x86_64' assume fast unaligned memory accesses. 2012-12-10 18:22:42 +00:00
Transforms Add a new visitor for walking the uses of a pointer value. 2012-12-10 08:28:39 +00:00
VMCore s/AttrListPtr/AttributeSet/g to better label what this class is going to be in the near future. 2012-12-07 23:16:57 +00:00
CMakeLists.txt Copy clang/Driver/<Option parsing stuff> to llvm. 2012-12-05 00:29:32 +00:00
LLVMBuild.txt Copy clang/Driver/<Option parsing stuff> to llvm. 2012-12-05 00:29:32 +00:00
Makefile Copy clang/Driver/<Option parsing stuff> to llvm. 2012-12-05 00:29:32 +00:00