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0f76c6afe8
llvm-mirror/test/Transforms
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Andrew Trick 0f76c6afe8 indvars -disable-iv-rewrite: Adds support for eliminating identity 
ops.

This is a rewrite of the IV simplification algorithm used by
-disable-iv-rewrite. To avoid perturbing the default mode, I
temporarily split the driver and created SimplifyIVUsersNoRewrite. The
idea is to avoid doing opcode/pattern matching inside
IndVarSimplify. SCEV already does it. We want to optimize with the
full generality of SCEV, but optimize def-use chains top down on-demand rather
than rewriting the entire expression bottom-up. This was easy to do
for operations that SCEV can prove are identity function. So we're now
eliminating bitmasks and zero extends this way.

A result of this rewrite is that indvars -disable-iv-rewrite no longer
requires IVUsers.

llvm-svn: 133502
2011-06-21 03:22:38 +00:00
..
ADCE stop accepting begin/end around function bodies in the .ll parser, this isn't pascal anymore. 2011-06-17 06:42:57 +00:00
ArgumentPromotion fix PR8932, a case where arg promotion could infinitely promote. 2011-01-16 08:09:24 +00:00
BlockPlacement Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
BranchFolding Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
CodeExtractor manually upgrade a bunch of tests to modern syntax, and remove some that 2011-06-17 03:14:27 +00:00
CodeGenPrepare Roll r127459 back in: 2011-03-11 21:52:04 +00:00
ConstantMerge Don't merge two constants if we care about the address of both. 2011-01-16 17:05:09 +00:00
ConstProp implement PR9315, constant folding exp2 in terms of pow (since hosts without 2011-05-22 22:22:35 +00:00
CorrelatedValuePropagation Test for lazy value info's ability to prove the absense of NULLs in pointers. 2011-01-16 21:57:20 +00:00
DeadArgElim manually upgrade a bunch of tests to modern syntax, and remove some that 2011-06-17 03:14:27 +00:00
DeadStoreElimination rip out a ton of intrinsic modernization logic from AutoUpgrade.cpp, which is 2011-06-18 06:05:24 +00:00
EarlyCSE Duncan deftly points out that readnone functions aren't 2011-01-03 23:38:13 +00:00
FunctionAttrs rip out a ton of intrinsic modernization logic from AutoUpgrade.cpp, which is 2011-06-18 06:05:24 +00:00
GlobalDCE Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
GlobalOpt rip out a ton of intrinsic modernization logic from AutoUpgrade.cpp, which is 2011-06-18 06:05:24 +00:00
GVN This is an automatically reduced test case that crashed in GVN, at some 2011-06-20 14:46:47 +00:00
IndVarSimplify indvars -disable-iv-rewrite: Adds support for eliminating identity 2011-06-21 03:22:38 +00:00
Inline rip out a ton of intrinsic modernization logic from AutoUpgrade.cpp, which is 2011-06-18 06:05:24 +00:00
InstCombine rip out a ton of intrinsic modernization logic from AutoUpgrade.cpp, which is 2011-06-18 06:05:24 +00:00
InstSimplify The comparision "max(x,y)==x" is equivalent to "x>=y". Since the max is 2011-05-07 16:56:49 +00:00
Internalize Add test for r127138. 2011-03-07 21:28:14 +00:00
IPConstantProp remove parser support for the obsolete "multiple return values" syntax, which 2011-06-17 06:49:41 +00:00
JumpThreading remove asmparser support for the old getresult instruction, which has been subsumed by extractvalue. 2011-06-17 06:57:15 +00:00
LCSSA Do not add PHIs with no users when creating LCSSA form. Patch by Andrew Clinton. 2011-03-15 07:41:25 +00:00
LICM manually upgrade a bunch of tests to modern syntax, and remove some that 2011-06-17 03:14:27 +00:00
LoopDeletion Make LoopDeletion work on loops with multiple edges, as long as the incoming 2011-02-22 22:25:39 +00:00
LoopIdiom Fix PR9815: I was trying to get out of "generating code and then 2011-05-22 17:39:56 +00:00
LoopRotate remove asmparser support for the old getresult instruction, which has been subsumed by extractvalue. 2011-06-17 06:57:15 +00:00
LoopSimplify manually upgrade a bunch of tests to modern syntax, and remove some that 2011-06-17 03:14:27 +00:00
LoopStrengthReduce When forming an ICmpZero LSRUse, normalize the non-IV operand 2011-05-18 21:02:18 +00:00
LoopUnroll add a testcase for r125827 2011-02-18 05:05:01 +00:00
LoopUnswitch Bail on unswitching a switch statement for a case with a critical edge. We name 2011-06-03 06:27:15 +00:00
LowerAtomic Add an atomic lowering pass 2010-08-03 16:19:16 +00:00
LowerInvoke Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
LowerSetJmp Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
LowerSwitch Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
Mem2Reg Add test for r133251. 2011-06-18 07:23:25 +00:00
MemCpyOpt rip out a ton of intrinsic modernization logic from AutoUpgrade.cpp, which is 2011-06-18 06:05:24 +00:00
MergeFunc When removing a function from the function set and adding it to deferred, we 2011-02-09 06:32:02 +00:00
ObjCARC Fix ARCOpt to insert releases on both successors of an invoke rather 2011-06-16 20:57:14 +00:00
PhaseOrdering This directory was missing the dg.exp to cause the tests to run. Some time since 2011-06-06 20:23:00 +00:00
PruneEH manually upgrade a bunch of tests to modern syntax, and remove some that 2011-06-17 03:14:27 +00:00
Reassociate Fix reassociate to use a worklist instead of recursing when new 2011-04-12 00:11:56 +00:00
ScalarRepl Remove support for parsing the "type i32" syntax for defining a numbered 2011-06-19 00:03:46 +00:00
SCCP remove asmparser support for the old getresult instruction, which has been subsumed by extractvalue. 2011-06-17 06:57:15 +00:00
SimplifyCFG Fix PR10103: Less code for enum type translation. 2011-06-18 10:28:47 +00:00
SimplifyLibCalls rip out a ton of intrinsic modernization logic from AutoUpgrade.cpp, which is 2011-06-18 06:05:24 +00:00
Sink Make BasicAliasAnalysis a normal AliasAnalysis implementation which 2010-10-18 18:04:47 +00:00
StripSymbols DIGlobalVariable can be used to encode debug info for globals that are directly folded into a constant by FE. 2010-08-25 18:52:02 +00:00
TailCallElim make the asmparser reject function and type redefinitions. 'Merging' hasn't been 2011-06-17 07:06:44 +00:00
TailDup Move few target-dependant tests to appropriate directories. 2011-05-06 18:24:46 +00:00