Chris Lattner 610f1e2785 Codegen signed divides by 2 and -2 more efficiently. In particular ... instead of: s: ;; X / 2 movl 4(%esp), %eax movl %eax, %ecx shrl $31, %ecx movl %eax, %edx addl %ecx, %edx sarl $1, %eax ret t: ;; X / -2 movl 4(%esp), %eax movl %eax, %ecx shrl $31, %ecx movl %eax, %edx addl %ecx, %edx sarl $1, %eax negl %eax ret Emit: s: movl 4(%esp), %eax cmpl $-2147483648, %eax sbbl $-1, %eax sarl $1, %eax ret t: movl 4(%esp), %eax cmpl $-2147483648, %eax sbbl $-1, %eax sarl $1, %eax negl %eax ret git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16760 91177308-0d34-0410-b5e6-96231b3b80d8		2004-10-06 04:02:39 +00:00
..
CBackend	FreeBSD uses GCC. Patch contributed by Jeff Cohen!	2004-10-06 03:15:44 +00:00
PowerPC	Generate better code by being far less clever when it comes to the select instruction. Don't create overlapping register lifetimes	2004-09-29 05:00:31 +00:00
Skeleton	Make sure to set the operand list	2004-09-21 17:30:54 +00:00
Sparc	I think this will handle double args.	2004-09-30 19:44:32 +00:00
SparcV8	I think this will handle double args.	2004-09-30 19:44:32 +00:00
SparcV9	Make EmitMappingInfo into an "external location" option, so that it can be set	2004-09-30 20:20:01 +00:00
X86	Codegen signed divides by 2 and -2 more efficiently. In particular	2004-10-06 04:02:39 +00:00
Makefile	Targets are independent of each other, so compile them in parallel	2004-09-15 01:34:25 +00:00
MRegisterInfo.cpp	Add getAllocatableSet() function.	2004-08-26 22:21:04 +00:00
Target.td	Add initial support for variants	2004-10-03 19:34:18 +00:00
TargetData.cpp	Changes For Bug 352	2004-09-01 22:55:40 +00:00
TargetFrameInfo.cpp
TargetInstrInfo.cpp
TargetMachine.cpp	Changes For Bug 352	2004-09-01 22:55:40 +00:00
TargetMachineRegistry.cpp
TargetSchedInfo.cpp	Since we use alloca now make sure we include the proper headers for it.	2004-09-28 02:53:15 +00:00