Chris Lattner 780ffd9c1f _test: ... li r2, 0 LBB_test_1: ; no_exit.2 li r5, 0 stw r5, 0(r3) addi r2, r2, 1 addi r3, r3, 4 cmpwi cr0, r2, 701 blt cr0, LBB_test_1 ; no_exit.2 LBB_test_2: ; loopexit.2.loopexit addi r2, r2, 1 stw r2, 0(r4) blr [zion ~/llvm]$ cat > ~/xx Uses of IV's outside of the loop should use hte post-incremented version of the IV, not the preincremented version. This helps many loops (e.g. in sixtrack) which used to generate code like this (this is the code from the dont-hoist-simple-loop-constants.ll testcase): _test: li r2, 0 **** IV starts at 0 LBB_test_1: ; no_exit.2 or r5, r2, r2 **** Copy for loop exit li r2, 0 stw r2, 0(r3) addi r3, r3, 4 addi r2, r5, 1 addi r6, r5, 2 **** IV+2 cmpwi cr0, r6, 701 blt cr0, LBB_test_1 ; no_exit.2 LBB_test_2: ; loopexit.2.loopexit addi r2, r5, 2 **** IV+2 stw r2, 0(r4) blr And now generated code like this: _test: li r2, 1 *** IV starts at 1 LBB_test_1: ; no_exit.2 li r5, 0 stw r5, 0(r3) addi r2, r2, 1 addi r3, r3, 4 cmpwi cr0, r2, 701 *** IV.postinc + 0 blt cr0, LBB_test_1 LBB_test_2: ; loopexit.2.loopexit stw r2, 0(r4) *** IV.postinc + 0 blr llvm-svn: 23313		2005-09-12 06:04:47 +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	Transform floor((double)FLT) -> (double)floorf(FLT), implementing	2005-08-24 17:22:17 +00:00
Scalar	_test:	2005-09-12 06:04:47 +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