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GlobalISel: Add LLT helper to multiply vector sizes

This commit is contained in:
Matt Arsenault 2022-04-09 10:45:31 -04:00
parent e38c5fded6
commit 12d79b1514
3 changed files with 62 additions and 0 deletions
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12
llvm/include/llvm/Support/LowLevelTypeImpl.h
View File

@ -207,6 +207,18 @@ public:
return scalar(getScalarSizeInBits() / Factor);
}
/// Produce a vector type that is \p Factor times bigger, preserving the
/// element type. For a scalar or pointer, this will produce a new vector with
/// \p Factor elements.
LLT multiplyElements(int Factor) const {
if (isVector()) {
return scalarOrVector(getElementCount().multiplyCoefficientBy(Factor),
getElementType());
}
return fixed_vector(Factor, *this);
}
bool isByteSized() const { return getSizeInBits().isKnownMultipleOf(8); }
unsigned getScalarSizeInBits() const {

5
llvm/include/llvm/Support/TypeSize.h
View File

@ -362,6 +362,11 @@ public:
LinearPolySize::get(getKnownMinValue() / RHS, isScalable()));
}
LeafTy multiplyCoefficientBy(ScalarTy RHS) const {
return static_cast<LeafTy>(
LinearPolySize::get(getKnownMinValue() * RHS, isScalable()));
}
LeafTy coefficientNextPowerOf2() const {
return static_cast<LeafTy>(LinearPolySize::get(
static_cast<ScalarTy>(llvm::NextPowerOf2(getKnownMinValue())),

45
llvm/unittests/CodeGen/LowLevelTypeTest.cpp
View File

@ -319,4 +319,49 @@ TEST(LowLevelTypeTest, Divide) {
LLT::fixed_vector(4, LLT::pointer(1, 64)).divide(2));
}
TEST(LowLevelTypeTest, MultiplyElements) {
// Basic scalar->vector cases
EXPECT_EQ(LLT::fixed_vector(2, 16), LLT::scalar(16).multiplyElements(2));
EXPECT_EQ(LLT::fixed_vector(3, 16), LLT::scalar(16).multiplyElements(3));
EXPECT_EQ(LLT::fixed_vector(4, 32), LLT::scalar(32).multiplyElements(4));
EXPECT_EQ(LLT::fixed_vector(4, 7), LLT::scalar(7).multiplyElements(4));
// Basic vector to vector cases
EXPECT_EQ(LLT::fixed_vector(4, 32),
LLT::fixed_vector(2, 32).multiplyElements(2));
EXPECT_EQ(LLT::fixed_vector(9, 32),
LLT::fixed_vector(3, 32).multiplyElements(3));
// Pointer to vector of pointers
EXPECT_EQ(LLT::fixed_vector(2, LLT::pointer(0, 32)),
LLT::pointer(0, 32).multiplyElements(2));
EXPECT_EQ(LLT::fixed_vector(3, LLT::pointer(1, 32)),
LLT::pointer(1, 32).multiplyElements(3));
EXPECT_EQ(LLT::fixed_vector(4, LLT::pointer(1, 64)),
LLT::pointer(1, 64).multiplyElements(4));
// Vector of pointers to vector of pointers
EXPECT_EQ(LLT::fixed_vector(8, LLT::pointer(1, 64)),
LLT::fixed_vector(2, LLT::pointer(1, 64)).multiplyElements(4));
EXPECT_EQ(LLT::fixed_vector(9, LLT::pointer(1, 32)),
LLT::fixed_vector(3, LLT::pointer(1, 32)).multiplyElements(3));
// Scalable vectors
EXPECT_EQ(LLT::scalable_vector(4, 16),
LLT::scalable_vector(2, 16).multiplyElements(2));
EXPECT_EQ(LLT::scalable_vector(6, 16),
LLT::scalable_vector(2, 16).multiplyElements(3));
EXPECT_EQ(LLT::scalable_vector(9, 16),
LLT::scalable_vector(3, 16).multiplyElements(3));
EXPECT_EQ(LLT::scalable_vector(4, 32),
LLT::scalable_vector(2, 32).multiplyElements(2));
EXPECT_EQ(LLT::scalable_vector(256, 32),
LLT::scalable_vector(8, 32).multiplyElements(32));
// Scalable vectors of pointers
EXPECT_EQ(LLT::scalable_vector(4, LLT::pointer(0, 32)),
LLT::scalable_vector(2, LLT::pointer(0, 32)).multiplyElements(2));
EXPECT_EQ(LLT::scalable_vector(32, LLT::pointer(1, 64)),
LLT::scalable_vector(8, LLT::pointer(1, 64)).multiplyElements(4));
}
}