llvm-6502/test/Transforms/LoopStrengthReduce
Chandler Carruth e4ba75f43e Switch the SCEV expander and LoopStrengthReduce to use
TargetTransformInfo rather than TargetLowering, removing one of the
primary instances of the layering violation of Transforms depending
directly on Target.

This is a really big deal because LSR used to be a "special" pass that
could only be tested fully using llc and by looking at the full output
of it. It also couldn't run with any other loop passes because it had to
be created by the backend. No longer is this true. LSR is now just
a normal pass and we should probably lift the creation of LSR out of
lib/CodeGen/Passes.cpp and into the PassManagerBuilder. =] I've not done
this, or updated all of the tests to use opt and a triple, because
I suspect someone more familiar with LSR would do a better job. This
change should be essentially without functional impact for normal
compilations, and only change behvaior of targetless compilations.

The conversion required changing all of the LSR code to refer to the TTI
interfaces, which fortunately are very similar to TargetLowering's
interfaces. However, it also allowed us to *always* expect to have some
implementation around. I've pushed that simplification through the pass,
and leveraged it to simplify code somewhat. It required some test
updates for one of two things: either we used to skip some checks
altogether but now we get the default "no" answer for them, or we used
to have no information about the target and now we do have some.

I've also started the process of removing AddrMode, as the TTI interface
doesn't use it any longer. In some cases this simplifies code, and in
others it adds some complexity, but I think it's not a bad tradeoff even
there. Subsequent patches will try to clean this up even further and use
other (more appropriate) abstractions.

Yet again, almost all of the formatting changes brought to you by
clang-format. =]

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171735 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-07 14:41:08 +00:00
..
ARM During the CodeGenPrepare we often lower intrinsics (such as objsize) 2012-08-14 05:19:07 +00:00
X86 Switch the SCEV expander and LoopStrengthReduce to use 2013-01-07 14:41:08 +00:00
2005-08-15-AddRecIV.ll
2005-08-17-OutOfLoopVariant.ll
2005-09-12-UsesOutOutsideOfLoop.ll
2007-04-23-UseIterator.ll
2008-08-13-CmpStride.ll
2008-09-09-Overflow.ll
2009-01-13-nonconstant-stride-outside-loop.ll
2009-04-28-no-reduce-mul.ll
2011-07-19-CritEdgeBreakCrash.ll
2011-10-03-CritEdgeMerge.ll LSR critical edge splitting fix for PR13756. 2012-09-18 17:51:33 +00:00
2011-10-06-ReusePhi.ll
2011-10-13-SCEVChain.ll
2011-10-14-IntPtr.ll
2011-12-19-PostincQuadratic.ll
2012-01-02-nopreheader.ll Test case rename 2012-01-17 22:27:45 +00:00
2012-01-16-nopreheader.ll LSR fix: broaden the check for loop preheaders. 2012-01-17 06:45:52 +00:00
2012-03-15-nopreheader.ll LSR: teach isSimplifiedLoopNest to handle PHI IVUsers. 2012-03-20 21:24:44 +00:00
2012-03-26-constexpr.ll Unit test for PR11950: LSR crash. 2012-03-26 21:45:37 +00:00
2012-07-13-ExpandUDiv.ll LSR Fix: check SCEV expression safety before expansion. 2012-07-13 23:33:10 +00:00
2012-07-18-LimitReassociate.ll Switch the SCEV expander and LoopStrengthReduce to use 2013-01-07 14:41:08 +00:00
2013-01-05-IndBr.ll Fix a crash in LSR replaceCongruentIVs. 2013-01-06 05:59:39 +00:00
addrec-gep.ll Convert -indvars tests that rely on SCEV expansion to -loop-reduce tests. 2012-03-22 17:10:07 +00:00
count-to-zero.ll
dead-phi.ll
different-type-ivs.ll
dominate-assert.ll Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2012-12-30 02:33:22 +00:00
dont_insert_redundant_ops.ll
dont_reduce_bytes.ll
dont_reverse.ll Convert all tests using TCL-style quoting to use shell-style quoting. 2012-07-02 12:47:22 +00:00
dont-hoist-simple-loop-constants.ll Fix the remaining TCL-style quotes found in the testsuite. This is 2012-07-02 19:09:46 +00:00
exit_compare_live_range.ll Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2012-12-30 01:28:40 +00:00
hoist-parent-preheader.ll
invariant_value_first_arg.ll Fix the remaining TCL-style quotes found in the testsuite. This is 2012-07-02 19:09:46 +00:00
invariant_value_first.ll Fix the remaining TCL-style quotes found in the testsuite. This is 2012-07-02 19:09:46 +00:00
ivchain.ll Handle a corner case with IV chain collection with bailout instead of assert. 2012-01-20 21:23:40 +00:00
lit.local.cfg Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed. 2012-02-16 06:28:33 +00:00
nested-reduce.ll
nonlinear-postinc.ll
ops_after_indvar.ll
phi_node_update_multiple_preds.ll
post-inc-icmpzero.ll Switch the SCEV expander and LoopStrengthReduce to use 2013-01-07 14:41:08 +00:00
pr2537.ll
pr2570.ll Convert all tests using TCL-style quoting to use shell-style quoting. 2012-07-02 12:47:22 +00:00
pr3086.ll
pr3399.ll
pr3571.ll
pr12018.ll Don't skip debug instructions when looking for the insertion point of 2012-02-18 17:22:58 +00:00
pr12048.ll Semantically revert 151015. Add a comment on why we should be able to assert 2012-02-22 03:21:39 +00:00
pr12691.ll Make sure HoistInsertPosition finds a position that is dominated by all 2012-04-30 03:53:06 +00:00
preserve-gep-loop-variant.ll Convert -indvars tests that rely on SCEV expansion to -loop-reduce tests. 2012-03-22 17:10:07 +00:00
quadradic-exit-value.ll Convert all tests using TCL-style quoting to use shell-style quoting. 2012-07-02 12:47:22 +00:00
related_indvars.ll
remove_indvar.ll
share_code_in_preheader.ll
share_ivs.ll
uglygep.ll
use_postinc_value_outside_loop.ll Convert all tests using TCL-style quoting to use shell-style quoting. 2012-07-02 12:47:22 +00:00
var_stride_used_by_compare.ll Fix the remaining TCL-style quotes found in the testsuite. This is 2012-07-02 19:09:46 +00:00
variable_stride.ll