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Extend the vcmp/fcmp LLVM IR instructions to take vectors as arguments

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and, if so, to return a vector of boolean as a result;

Extend the select LLVM IR instruction to allow you to specify a result
type which is a vector of boolean, in which case the result will be an
element-wise selection instead of choosing one vector or the other; and

Update LangRef.html to describe these changes.

This patch was contributed by Preston Gurd!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55969 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2008-09-09 01:02:47 +00:00
parent 3eb594013f
commit f72fb679ef
10 changed files with 181 additions and 47 deletions
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21
lib/VMCore/Verifier.cpp
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@@ -659,8 +659,21 @@ void Verifier::visitSwitchInst(SwitchInst &SI) {
}
void Verifier::visitSelectInst(SelectInst &SI) {
Assert1(SI.getCondition()->getType() == Type::Int1Ty,
"Select condition type must be bool!", &SI);
if (const VectorType* vt
= dyn_cast<VectorType>(SI.getCondition()->getType())) {
Assert1( vt->getElementType() == Type::Int1Ty,
"Select condition type must be vector of bool!", &SI);
if (const VectorType* val_vt
= dyn_cast<VectorType>(SI.getTrueValue()->getType())) {
Assert1( vt->getNumElements() == val_vt->getNumElements(),
"Select vector size != value vector size", &SI);
} else {
Assert1(0, "Vector select values must have vector types", &SI);
}
} else {
Assert1(SI.getCondition()->getType() == Type::Int1Ty,
"Select condition type must be bool!", &SI);
}
Assert1(SI.getTrueValue()->getType() == SI.getFalseValue()->getType(),
"Select values must have identical types!", &SI);
Assert1(SI.getTrueValue()->getType() == SI.getType(),
@@ -1028,7 +1041,7 @@ void Verifier::visitICmpInst(ICmpInst& IC) {
Assert1(Op0Ty == Op1Ty,
"Both operands to ICmp instruction are not of the same type!", &IC);
// Check that the operands are the right type
Assert1(Op0Ty->isInteger() || isa<PointerType>(Op0Ty),
Assert1(Op0Ty->isIntOrIntVector() || isa<PointerType>(Op0Ty),
"Invalid operand types for ICmp instruction", &IC);
visitInstruction(IC);
}
@@ -1040,7 +1053,7 @@ void Verifier::visitFCmpInst(FCmpInst& FC) {
Assert1(Op0Ty == Op1Ty,
"Both operands to FCmp instruction are not of the same type!", &FC);
// Check that the operands are the right type
Assert1(Op0Ty->isFloatingPoint(),
Assert1(Op0Ty->isFPOrFPVector(),
"Invalid operand types for FCmp instruction", &FC);
visitInstruction(FC);
}