6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-02 07:32:52 +00:00
Code Issues Projects Releases Wiki Activity

LoopVectorize: For scalars and void types there is no need to compute vector insert/extract costs.

Browse Source 
Fixes an assert during the build of oggenc in the test suite.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171000 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2012-12-23 13:19:18 +00:00
parent f85ec865f0
commit 417872ed08
1 changed files with 9 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
lib/Transforms/Vectorize/LoopVectorize.cpp
View File

@ -2181,18 +2181,16 @@ LoopVectorizationCostModel::getInstructionCost(Instruction *I, unsigned VF) {
// elements, times the vector width.
unsigned Cost = 0;
bool IsVoid = RetTy->isVoidTy();
if (RetTy->isVoidTy() || VF != 1) {
unsigned InsCost = VTTI->getVectorInstrCost(Instruction::InsertElement,
VectorTy);
unsigned ExtCost = VTTI->getVectorInstrCost(Instruction::ExtractElement,
VectorTy);
unsigned InsCost = (IsVoid ? 0 :
VTTI->getVectorInstrCost(Instruction::InsertElement,
VectorTy));
unsigned ExtCost = VTTI->getVectorInstrCost(Instruction::ExtractElement,
VectorTy);
// The cost of inserting the results plus extracting each one of the
// operands.
Cost += VF * (InsCost + ExtCost * I->getNumOperands());
// The cost of inserting the results plus extracting each one of the
// operands.
Cost += VF * (InsCost + ExtCost * I->getNumOperands());
}
// The cost of executing VF copies of the scalar instruction. This opcode
// is unknown. Assume that it is the same as 'mul'.