Evan Cheng 8b944d39b3 Added optimization that narrow load / op / store and the 'op' is a bit twiddling instruction and its second operand is an immediate. If bits that are touched by 'op' can be done with a narrower instruction, reduce the width of the load and store as well. This happens a lot with bitfield manipulation code. ... e.g. orl $65536, 8(%rax) => orb $1, 10(%rax) Since narrowing is not always a win, e.g. i32 -> i16 is a loss on x86, dag combiner consults with the target before performing the optimization. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72507 91177308-0d34-0410-b5e6-96231b3b80d8		2009-05-28 00:35:15 +00:00
..
Analysis	Add braces around an array initializer.	2009-05-27 02:07:15 +00:00
Archive	Add the private linkage.	2009-01-15 20:18:42 +00:00
AsmParser	Use v.data() instead of &v[0] when SmallVector v might be empty.	2009-05-21 09:52:38 +00:00
Bitcode	Make MDNode use CallbackVH. Also change MDNode to store Value* instead of	2009-05-10 20:57:05 +00:00
CodeGen	Added optimization that narrow load / op / store and the 'op' is a bit twiddling instruction and its second operand is an immediate. If bits that are touched by 'op' can be done with a narrower instruction, reduce the width of the load and store as well. This happens a lot with bitfield manipulation code.	2009-05-28 00:35:15 +00:00
CompilerDriver	-write-graph now can be used with -o.	2009-03-27 12:57:14 +00:00
Debugger	Oops...I committed too much.	2009-03-13 04:39:26 +00:00
ExecutionEngine	stat64/open64/lseek64 for the interpreter	2009-05-23 16:23:59 +00:00
Linker	Add a new "available_externally" linkage type. This is intended	2009-04-13 05:44:34 +00:00
Support	Minor fix for CMake build system	2009-05-27 16:52:17 +00:00
System	Work around a page size issue on Cygwin.	2009-05-23 17:57:59 +00:00
Target	Added optimization that narrow load / op / store and the 'op' is a bit twiddling instruction and its second operand is an immediate. If bits that are touched by 'op' can be done with a narrower instruction, reduce the width of the load and store as well. This happens a lot with bitfield manipulation code.	2009-05-28 00:35:15 +00:00
Transforms	Revert 72493 and replace it with a more conservative fix, for now: don't	2009-05-27 21:10:47 +00:00
VMCore	Audit the type constructors. Previously it was possible to create [0 x void]	2009-05-25 21:28:11 +00:00
Makefile	Reorganize llvmc code.	2009-03-02 09:01:14 +00:00