Chris Lattner 934520a747 Recursively scan scev expressions for common subexpressions. This allows us ... to handle nested loops much better, for example, by being able to tell that these two expressions: {( 8 + ( 16 * ( 1 + %Tmp11 + %Tmp12)) + %c_),+,( 16 * %Tmp 12)}<loopentry.1> {(( 16 * ( 1 + %Tmp11 + %Tmp12)) + %c_),+,( 16 * %Tmp12)}<loopentry.1> Have the following common part that can be shared: {(( 16 * ( 1 + %Tmp11 + %Tmp12)) + %c_),+,( 16 * %Tmp12)}<loopentry.1> This allows us to codegen an important inner loop in 168.wupwise as: .LBB_foo_4: ; no_exit.1 lfd f2, 16(r9) fmul f3, f0, f2 fmul f2, f1, f2 fadd f4, f3, f2 stfd f4, 8(r9) fsub f2, f3, f2 stfd f2, 16(r9) addi r8, r8, 1 addi r9, r9, 16 cmpw cr0, r8, r4 ble .LBB_foo_4 ; no_exit.1 instead of: .LBB_foo_3: ; no_exit.1 lfdx f2, r6, r9 add r10, r6, r9 lfd f3, 8(r10) fmul f4, f1, f2 fmadd f4, f0, f3, f4 stfd f4, 8(r10) fmul f3, f1, f3 fmsub f2, f0, f2, f3 stfdx f2, r6, r9 addi r9, r9, 16 addi r8, r8, 1 cmpw cr0, r8, r4 ble .LBB_foo_3 ; no_exit.1 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22781 91177308-0d34-0410-b5e6-96231b3b80d8		2005-08-13 07:27:18 +00:00
..
Hello	Remove trailing whitespace	2005-04-21 23:48:37 +00:00
Instrumentation	Eliminate tabs and trailing spaces	2005-04-23 21:38:35 +00:00
IPO	All stats are "Number of ..."	2005-08-07 20:02:04 +00:00
Scalar	Recursively scan scev expressions for common subexpressions. This allows us	2005-08-13 07:27:18 +00:00
Utils	Teach SplitCriticalEdge to update LoopInfo if it is alive. This fixes	2005-08-13 01:38:43 +00:00
ExprTypeConvert.cpp	ConvertibleToGEP always returns 0, remove some old crufty code which	2005-07-26 16:38:28 +00:00
LevelRaise.cpp	ConvertibleToGEP always returns 0, remove some old crufty code which	2005-07-26 16:38:28 +00:00
Makefile	Change Library Names Not To Conflict With Others When Installed	2004-10-27 23:18:45 +00:00
TransformInternals.cpp	ConvertibleToGEP always returns 0, remove some old crufty code which	2005-07-26 16:38:28 +00:00
TransformInternals.h	ConvertibleToGEP always returns 0, remove some old crufty code which	2005-07-26 16:38:28 +00:00