OSchip
/
llvm-project
mirror of https://github.com/THU-DSP-LAB/llvm-project.git
13
0
Fork 6
Code Issues Packages Projects Releases Wiki Activity

[BasicTTI] Add missing scalable vector handling 

BasicTTI needs to return an invalid cost for scalable vectors instead of crash.  Without this, it is impossible to write tests for missing functionality in a target.
This commit is contained in:
Philip Reames 2022-06-06 14:20:27 -07:00 committed by Philip Reames
parent 47039a1a4b
commit c1fb8bd777
1 changed files with 10 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
llvm/include/llvm/CodeGen/BasicTTIImpl.h
View File

@ -2130,6 +2130,11 @@ public:
/// vector is reduced on each iteration.
InstructionCost getTreeReductionCost(unsigned Opcode, VectorType *Ty,
TTI::TargetCostKind CostKind) {
// Targets must implement a default value for the scalable case, since
// we don't know how many lanes the vector has.
if (isa<ScalableVectorType>(Ty))
return InstructionCost::getInvalid();
Type *ScalarTy = Ty->getElementType();
unsigned NumVecElts = cast<FixedVectorType>(Ty)->getNumElements();
if ((Opcode == Instruction::Or || Opcode == Instruction::And) &&
@ -2228,6 +2233,11 @@ public:
InstructionCost getMinMaxReductionCost(VectorType *Ty, VectorType *CondTy,
bool IsUnsigned,
TTI::TargetCostKind CostKind) {
// Targets must implement a default value for the scalable case, since
// we don't know how many lanes the vector has.
if (isa<ScalableVectorType>(Ty))
return InstructionCost::getInvalid();
Type *ScalarTy = Ty->getElementType();
Type *ScalarCondTy = CondTy->getElementType();
unsigned NumVecElts = cast<FixedVectorType>(Ty)->getNumElements();