llvm-6502/test/Analysis
Arnold Schwaighofer b6f4872d29 ARM cost model: Increase the cost for vector casts that use the stack
Increase the cost of v8/v16-i8 to v8/v16-i32 casts and truncates as the backend
currently lowers those using stack accesses.

This was responsible for a significant degradation on
MultiSource/Benchmarks/Trimaran/enc-pc1/enc-pc1
where we vectorize one loop to a vector factor of 16. After this patch we select
a vector factor of 4 which will generate reasonable code.

unsigned char cle[32];

void test(short c) {
  unsigned short compte;
  for (compte = 0; compte <= 31; compte++) {
    cle[compte] = cle[compte] ^ c;
  }
}

radar://13220512

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176898 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12 21:19:22 +00:00
..
BasicAA Memory Dependence Analysis (not mem-dep test) take advantage of "invariant.load" metadata. 2013-03-06 17:48:48 +00:00
BlockFrequencyInfo
BranchProbabilityInfo
CallGraph
CostModel ARM cost model: Increase the cost for vector casts that use the stack 2013-03-12 21:19:22 +00:00
DependenceAnalysis
Dominators
GlobalsModRef
LoopInfo
PostDominators
Profiling
RegionInfo Revert the test moves from 176733. Use "REQUIRES: asserts" instead. 2013-03-12 16:27:52 +00:00
ScalarEvolution
TypeBasedAliasAnalysis