Chris Lattner c8af02c403 Improve signed division by power of 2 *dramatically* from this: ... div: mov %EDX, DWORD PTR [%ESP + 4] mov %ECX, 64 mov %EAX, %EDX sar %EDX, 31 idiv %ECX ret to this: div: mov %EAX, DWORD PTR [%ESP + 4] mov %ECX, %EAX sar %ECX, 5 shr %ECX, 26 mov %EDX, %EAX add %EDX, %ECX sar %EAX, 6 ret Note that the intel compiler is currently making this: div: movl 4(%esp), %edx #3.5 movl %edx, %eax #4.14 sarl $5, %eax #4.14 shrl $26, %eax #4.14 addl %edx, %eax #4.14 sarl $6, %eax #4.14 ret #4.14 Which has one less register->register copy. (hint hint alkis :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13354 91177308-0d34-0410-b5e6-96231b3b80d8		2004-05-04 19:33:58 +00:00
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Analysis	Add stub support for reading BBTraces.	2004-05-04 17:11:14 +00:00
Archive	Use the true, decoded name of the archive member in getObjectType.	2004-03-31 19:51:00 +00:00
AsmParser	Fix a memory leak. We leaked the vector holding the entries in switch tables.	2004-04-17 23:49:15 +00:00
Bytecode	Squelch compile-time warning (profile build).	2004-04-28 15:32:09 +00:00
CodeGen	Operate on the Machine CFG instead of on the LLVM CFG	2004-05-01 21:24:39 +00:00
Debugger	"fix" a nasty race condition	2004-01-14 21:18:03 +00:00
ExecutionEngine	Generalize the strlen size_t hack, for the benefit of the other external	2004-05-01 06:42:15 +00:00
Linker	Don't use invalid HTML in a doxygen comment.	2004-04-15 15:23:45 +00:00
Support	Bugpoint was not correctly capturing stderr! This caused it to "find" bugs	2004-04-16 05:35:58 +00:00
Target	Improve signed division by power of 2 *dramatically* from this:	2004-05-04 19:33:58 +00:00
Transforms	Do not mark instructions in unreachable sections of the function as live.	2004-05-04 17:00:46 +00:00
VMCore	class AssemblyWriter:	2004-04-28 19:24:28 +00:00
Makefile	CBackend is no longer here	2004-02-13 23:29:37 +00:00