Arnold Schwaighofer e02da03f09 BasicAA: Recognize cyclic NoAlias phis ... Enhances basic alias analysis to recognize phis whose first incoming values are NoAlias and whose other incoming values are just the phi node itself through some amount of recursion. Example: With this change basicaa reports that ptr_phi and ptr_phi2 do not alias each other. bb: ptr = ptr2 + 1 loop: ptr_phi = phi [bb, ptr], [loop, ptr_plus_one] ptr2_phi = phi [bb, ptr2], [loop, ptr2_plus_one] ... ptr_plus_one = gep ptr_phi, 1 ptr2_plus_one = gep ptr2_phi, 1 This enables the elimination of one load in code like the following: extern int foo; int test_noalias(int *ptr, int num, int* coeff) { int *ptr2 = ptr; int result = (*ptr++) * (*coeff--); while (num--) { *ptr2++ = *ptr; result += (*coeff--) * (*ptr++); } *ptr = foo; return result; } Part 2/2 of fix for PR13564. llvm-svn: 163319		2012-09-06 14:41:53 +00:00
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BasicAA	BasicAA: Recognize cyclic NoAlias phis	2012-09-06 14:41:53 +00:00
BlockFrequencyInfo
BranchProbabilityInfo	BranchProb: modify the definition of an edge in BranchProbabilityInfo to handle	2012-08-24 18:14:27 +00:00
CallGraph	Convert the uses of '|&' to use '2>&1 |' instead, which works on old	2012-07-02 18:37:59 +00:00
Dominators	FileCheck-ize tests.	2012-04-24 10:45:44 +00:00
GlobalsModRef	MemoryDependenceAnalysis attempts to find the first memory dependency for function calls.	2012-08-13 23:03:43 +00:00
LoopDependenceAnalysis
LoopInfo	Convert all tests using TCL-style quoting to use shell-style quoting.	2012-07-02 12:47:22 +00:00
PostDominators
Profiling	llvm/test/Analysis/Profiling: Mark 3 of them as REQUIRES: loadable_module.	2012-08-29 00:37:46 +00:00
RegionInfo	Convert the uses of '|&' to use '2>&1 |' instead, which works on old	2012-07-02 18:37:59 +00:00
ScalarEvolution	Fix broken check lines.	2012-08-17 12:28:26 +00:00
TypeBasedAliasAnalysis