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

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BranchProbabilityInfo

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CallGraph

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CostModel

ARM cost model: Increase the cost for vector casts that use the stack

2013-03-12 21:19:22 +00:00

DependenceAnalysis

Modified dump() to provide a little

2012-11-30 00:44:47 +00:00

Dominators

Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID

2012-12-30 02:33:22 +00:00

GlobalsModRef

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LoopInfo

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PostDominators

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Profiling

AArch64: adjust tests which rely on a default JIT

2013-02-18 11:08:37 +00:00

RegionInfo

Revert the test moves from 176733. Use "REQUIRES: asserts" instead.

2013-03-12 16:27:52 +00:00

ScalarEvolution

Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID

2012-12-30 02:33:22 +00:00

TypeBasedAliasAnalysis

Use references to attribute groups on the call/invoke instructions.

2013-02-22 09:09:42 +00:00