Dan Gohman c2695eba57 Revert 72493 and replace it with a more conservative fix, for now: don't ...

rewrite the comparison if there is any implicit extension or truncation
on the induction variable. I'm planning for IVUsers to eventually take
over some of the work of this code, and for it to be generalized.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72496 91177308-0d34-0410-b5e6-96231b3b80d8

2009-05-27 21:10:47 +00:00

..

2005-08-15-AddRecIV.ll

…

2005-08-17-OutOfLoopVariant.ll

…

2005-09-12-UsesOutOutsideOfLoop.ll

…

2007-04-23-UseIterator.ll

…

2008-08-06-CmpStride.ll

…

2008-08-13-CmpStride.ll

…

2008-08-14-ShadowIV.ll

…

2008-09-09-Overflow.ll

…

2009-01-13-nonconstant-stride-outside-loop.ll

…

2009-02-09-ivs-different-sizes.ll

…

2009-04-28-no-reduce-mul.ll

Teach SCEVExpander to expand arithmetic involving pointers into GEP

2009-05-19 02:15:55 +00:00

change-compare-stride-trickiness-0.ll

…

change-compare-stride-trickiness-1.ll

Teach getZeroExtendExpr and getSignExtendExpr to use trip-count

2009-04-27 20:16:15 +00:00

change-compare-stride-trickiness-2.ll

Revert 72493 and replace it with a more conservative fix, for now: don't

2009-05-27 21:10:47 +00:00

dead-phi.ll

…

dg.exp

…

different-type-ivs.ll

…

dont_insert_redundant_ops.ll

…

dont_reduce_bytes.ll

…

dont_reverse.ll

Suppress the IV reversal transformation in the case that the RHS

2009-05-20 00:34:08 +00:00

dont-hoist-simple-loop-constants.ll

…

exit_compare_live_range.ll

…

invariant_value_first_arg.ll

…

invariant_value_first.ll

…

nested-reduce.ll

…

ops_after_indvar.ll

…

phi_node_update_multiple_preds.ll

…

pr2537.ll

Testcase for PR2537.

2009-04-23 04:26:42 +00:00

pr2570.ll

Previously, RecursivelyDeleteDeadInstructions provided an option

2009-05-02 18:29:22 +00:00

pr3086.ll

Don't try to mix integers and pointers in an icmp instruction

2009-04-30 16:40:30 +00:00

pr3399.ll

Strengthen the "non-constant stride must dominate loop preheader" check.

2009-02-17 00:13:06 +00:00

pr3571.ll

Fix pr3571: If stride is a value defined by an instruction, make sure it dominates the loop preheader. When IV users are strength reduced, the stride is inserted into the preheader. It could create a use before def situation.

2009-02-15 06:06:15 +00:00

related_indvars.ll

…

remove_indvar.ll

…

share_code_in_preheader.ll

…

share_ivs.ll

…

use_postinc_value_outside_loop.ll

Implement "superhero" strength reduction, or full strength

2009-02-20 04:17:46 +00:00

var_stride_used_by_compare.ll

…

variable_stride.ll

…