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
..
Analysis	Fix an obvious oops	2005-08-10 00:59:40 +00:00
Archive	Final Changes For PR495:	2005-07-08 03:08:58 +00:00
AsmParser	Fix grammar	2005-06-24 18:00:40 +00:00
Bytecode	Eliminate all remaining tabs and trailing spaces.	2005-07-27 06:12:32 +00:00
CodeGen	Fix spelling, fix some broken canonicalizations by my last patch	2005-08-09 23:09:05 +00:00
Debugger	For PR495:	2005-07-07 23:21:43 +00:00
ExecutionEngine	one cannot allocate a global, until one is done initializing the global pointers	2005-08-01 17:35:40 +00:00
Linker	For PR495:	2005-07-07 23:21:43 +00:00
Support	Allow tools with "consume after" options (like lli) to take more positional	2005-08-08 21:57:27 +00:00
System	Fix grammar: it's == "it is".	2005-08-02 16:04:59 +00:00
Target	1. Refactored handling of integer immediate values for add, or, xor and sub.	2005-08-10 16:34:52 +00:00
Transforms	Make loop-simplify produce better loops by turning PHI nodes like X = phi [X, Y]	2005-08-10 02:07:32 +00:00
VMCore	add new helper function	2005-08-08 05:21:50 +00:00
Makefile	Add the Linker library	2004-11-14 21:54:41 +00:00