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Add LLVM{U}IntAsType() utility routine

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This commit is contained in:
Matt Pharr
2012-03-05 06:22:40 -08:00
parent ff48dd7bfb
commit e482d29951
2 changed files with 44 additions and 0 deletions
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36
llvmutil.cpp
View File

@@ -469,6 +469,42 @@ LLVMBoolVector(const bool *bvec) {
}
llvm::Constant *
LLVMIntAsType(int64_t val, LLVM_TYPE_CONST llvm::Type *type) {
LLVM_TYPE_CONST llvm::VectorType *vecType =
llvm::dyn_cast<LLVM_TYPE_CONST llvm::VectorType>(type);
if (vecType != NULL) {
llvm::Constant *v = llvm::ConstantInt::get(vecType->getElementType(),
val, true /* signed */);
std::vector<llvm::Constant *> vals;
for (int i = 0; i < (int)vecType->getNumElements(); ++i)
vals.push_back(v);
return llvm::ConstantVector::get(vals);
}
else
return llvm::ConstantInt::get(type, val, true /* signed */);
}
llvm::Constant *
LLVMUIntAsType(uint64_t val, LLVM_TYPE_CONST llvm::Type *type) {
LLVM_TYPE_CONST llvm::VectorType *vecType =
llvm::dyn_cast<LLVM_TYPE_CONST llvm::VectorType>(type);
if (vecType != NULL) {
llvm::Constant *v = llvm::ConstantInt::get(vecType->getElementType(),
val, false /* unsigned */);
std::vector<llvm::Constant *> vals;
for (int i = 0; i < (int)vecType->getNumElements(); ++i)
vals.push_back(v);
return llvm::ConstantVector::get(vals);
}
else
return llvm::ConstantInt::get(type, val, false /* unsigned */);
}
/** Conservative test to see if two llvm::Values are equal. There are
(potentially many) cases where the two values actually are equal but
this will return false. However, if it does return true, the two

8
llvmutil.h
View File

@@ -173,6 +173,14 @@ extern llvm::Constant *LLVMFloatVector(float f);
across all elements */
extern llvm::Constant *LLVMDoubleVector(double f);
/** Returns a constant integer or vector (according to the given type) of
the given signed integer value. */
extern llvm::Constant *LLVMIntAsType(int64_t, LLVM_TYPE_CONST llvm::Type *t);
/** Returns a constant integer or vector (according to the given type) of
the given unsigned integer value. */
extern llvm::Constant *LLVMUIntAsType(uint64_t, LLVM_TYPE_CONST llvm::Type *t);
/** Returns an LLVM boolean vector based on the given array of values.
The array should have g->target.vectorWidth elements. */
extern llvm::Constant *LLVMBoolVector(const bool *v);