Chris Lattner 0d7d99fd44 1. Refactored handling of integer immediate values for add, or, xor and sub. ... New routine: ISel::SelectIntImmediateExpr 2. Now checking use counts of large constants. If use count is > 2 then drop thru so that the constant gets loaded into a register. Source: int %test1(int %a) { entry: %tmp.1 = add int %a, 123456789 ; <int> [#uses=1] %tmp.2 = or int %tmp.1, 123456789 ; <int> [#uses=1] %tmp.3 = xor int %tmp.2, 123456789 ; <int> [#uses=1] %tmp.4 = sub int %tmp.3, -123456789 ; <int> [#uses=1] ret int %tmp.4 } Did Emit: .machine ppc970 .text .align 2 .globl _test1 _test1: .LBB_test1_0: ; entry addi r2, r3, -13035 addis r2, r2, 1884 ori r2, r2, 52501 oris r2, r2, 1883 xori r2, r2, 52501 xoris r2, r2, 1883 addi r2, r2, 52501 addis r3, r2, 1883 blr Now Emits: .machine ppc970 .text .align 2 .globl _test1 _test1: .LBB_test1_0: ; entry lis r2, 1883 ori r2, r2, 52501 add r3, r3, r2 or r3, r3, r2 xor r3, r3, r2 add r3, r3, r2 blr Patch by Jim Laskey! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22749 91177308-0d34-0410-b5e6-96231b3b80d8		2005-08-10 16:34:52 +00:00
..
Alpha	Update the targets to the new SETCC/CondCodeSDNode interfaces.	2005-08-09 20:21:10 +00:00
CBackend	Fixed PR#596:	2005-07-14 19:41:16 +00:00
IA64	sorry!! this is temporary; for some reason the nasty constmul code seems to	2005-08-10 12:38:57 +00:00
PowerPC	1. Refactored handling of integer immediate values for add, or, xor and sub.	2005-08-10 16:34:52 +00:00
Skeleton	Refactor the addPassesToEmitAssembly interface into a addPassesToEmitFile	2005-06-25 02:48:37 +00:00
Sparc	Eliminate all remaining tabs and trailing spaces.	2005-07-27 06:12:32 +00:00
SparcV8	Eliminate all remaining tabs and trailing spaces.	2005-07-27 06:12:32 +00:00
SparcV9	Update to use the new MathExtras.h support for log2 computation.	2005-08-02 19:26:06 +00:00
X86	Update the targets to the new SETCC/CondCodeSDNode interfaces.	2005-08-09 20:21:10 +00:00
Makefile	Implement the --enable-targets= feature of the configure script. The make	2005-04-22 17:20:11 +00:00
MRegisterInfo.cpp	Convert tabs to spaces	2005-04-22 17:54:37 +00:00
Target.td	Add some bits that can be set for instructions.	2005-01-02 02:27:48 +00:00
TargetData.cpp	Update to use the new MathExtras.h support for log2 computation.	2005-08-02 19:26:06 +00:00
TargetFrameInfo.cpp	Eliminate all remaining tabs and trailing spaces.	2005-07-27 06:12:32 +00:00
TargetInstrInfo.cpp	Convert tabs to spaces	2005-04-22 17:54:37 +00:00
TargetMachine.cpp	First round of support for doing scalar FP using the SSE2 ISA extension and	2005-07-06 18:59:04 +00:00
TargetMachineRegistry.cpp	Remove trailing whitespace	2005-04-21 22:55:34 +00:00
TargetSchedInfo.cpp	Convert tabs to spaces	2005-04-22 17:54:37 +00:00
TargetSubtarget.cpp	Eliminate all remaining tabs and trailing spaces.	2005-07-27 06:12:32 +00:00