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llvmutil.h File Reference

Header file with declarations for various LLVM utility stuff. More...

#include <llvm/LLVMContext.h>
#include <llvm/Type.h>
#include <llvm/DerivedTypes.h>
#include <llvm/Constants.h>
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Classes

struct  LLVMTypes

Namespaces

namespace  llvm

Functions

void InitLLVMUtil (llvm::LLVMContext *ctx, Target target)
llvm::ConstantInt * LLVMInt8 (int8_t i)
llvm::ConstantInt * LLVMUInt8 (uint8_t i)
llvm::ConstantInt * LLVMInt16 (int16_t i)
llvm::ConstantInt * LLVMUInt16 (uint16_t i)
llvm::ConstantInt * LLVMInt32 (int32_t i)
llvm::ConstantInt * LLVMUInt32 (uint32_t i)
llvm::ConstantInt * LLVMInt64 (int64_t i)
llvm::ConstantInt * LLVMUInt64 (uint64_t i)
llvm::Constant * LLVMFloat (float f)
llvm::Constant * LLVMDouble (double f)
llvm::Constant * LLVMBoolVector (bool v)
llvm::Constant * LLVMInt8Vector (int8_t i)
llvm::Constant * LLVMUInt8Vector (uint8_t i)
llvm::Constant * LLVMInt16Vector (int16_t i)
llvm::Constant * LLVMUInt16Vector (uint16_t i)
llvm::Constant * LLVMInt32Vector (int32_t i)
llvm::Constant * LLVMUInt32Vector (uint32_t i)
llvm::Constant * LLVMInt64Vector (int64_t i)
llvm::Constant * LLVMUInt64Vector (uint64_t i)
llvm::Constant * LLVMFloatVector (float f)
llvm::Constant * LLVMDoubleVector (double f)
llvm::Constant * LLVMIntAsType (int64_t, llvm::Type *t)
llvm::Constant * LLVMUIntAsType (uint64_t, llvm::Type *t)
llvm::Constant * LLVMBoolVector (const bool *v)
llvm::Constant * LLVMInt8Vector (const int8_t *i)
llvm::Constant * LLVMUInt8Vector (const uint8_t *i)
llvm::Constant * LLVMInt16Vector (const int16_t *i)
llvm::Constant * LLVMUInt16Vector (const uint16_t *i)
llvm::Constant * LLVMInt32Vector (const int32_t *i)
llvm::Constant * LLVMUInt32Vector (const uint32_t *i)
llvm::Constant * LLVMInt64Vector (const int64_t *i)
llvm::Constant * LLVMUInt64Vector (const uint64_t *i)
llvm::Constant * LLVMFloatVector (const float *f)
llvm::Constant * LLVMDoubleVector (const double *f)
bool LLVMVectorValuesAllEqual (llvm::Value *v)
bool LLVMVectorIsLinear (llvm::Value *v, int stride)
bool LLVMExtractVectorInts (llvm::Value *v, int64_t ret[], int *nElts)
void LLVMFlattenInsertChain (llvm::InsertElementInst *ie, int vectorWidth, llvm::Value **elements)
void LLVMDumpValue (llvm::Value *v)
llvm::Value * LLVMExtractFirstVectorElement (llvm::Value *v)
llvm::Value * LLVMConcatVectors (llvm::Value *v1, llvm::Value *v2, llvm::Instruction *insertBefore)
llvm::Value * LLVMShuffleVectors (llvm::Value *v1, llvm::Value *v2, int32_t shuf[], int shufSize, llvm::Instruction *insertBefore)
const char * LLVMGetName (llvm::Value *v, const char *)
const char * LLVMGetName (const char *op, llvm::Value *v1, llvm::Value *v2)

Variables

llvm::Constant * LLVMTrue
llvm::Constant * LLVMFalse
llvm::Constant * LLVMMaskAllOn
llvm::Constant * LLVMMaskAllOff

Detailed Description

Header file with declarations for various LLVM utility stuff.

Definition in file llvmutil.h.


Function Documentation

void InitLLVMUtil ( llvm::LLVMContext *  ctx,
Target  target 
)
llvm::Constant* LLVMBoolVector ( bool  v)

Returns an LLVM boolean vector constant of the given value smeared across all elements

Definition at line 437 of file llvmutil.cpp.

References Assert, LLVMTypes::BoolVectorType, Globals::ctx, g, LLVMTypes::Int32Type, LLVMTypes::Int32VectorType, LLVMFalse, LLVMTrue, Globals::target, and Target::vectorWidth.

Referenced by ForStmt::EmitCode(), ConstExpr::GetConstant(), ConstExpr::GetValue(), and lLLVMConstantValue().

llvm::Constant* LLVMBoolVector ( const bool *  v)

Returns an LLVM boolean vector based on the given array of values. The array should have g->target.vectorWidth elements.

Definition at line 456 of file llvmutil.cpp.

References Assert, LLVMTypes::BoolVectorType, Globals::ctx, g, LLVMTypes::Int32Type, LLVMTypes::Int32VectorType, LLVMFalse, LLVMTrue, Globals::target, and Target::vectorWidth.

llvm::Value* LLVMConcatVectors ( llvm::Value *  v1,
llvm::Value *  v2,
llvm::Instruction *  insertBefore 
)

This function takes two vectors, expected to be the same length, and returns a new vector of twice the length that represents concatenating the two of them.

Given two vectors of the same type, concatenate them into a vector that has twice as many elements, where the first half has the elements from the first vector and the second half has the elements from the second vector.

Definition at line 1517 of file llvmutil.cpp.

References Assert, int32_t, ISPC_MAX_NVEC, LLVMShuffleVectors(), and NULL.

Referenced by lAssembleResultVectors().

llvm::Constant* LLVMDouble ( double  f)

Returns an LLVM double constant of the given value

Definition at line 241 of file llvmutil.cpp.

References Globals::ctx, and g.

Referenced by ConstExpr::GetConstant(), ConstExpr::GetValue(), lLLVMConstantValue(), LLVMDoubleVector(), and lTypeConvAtomic().

llvm::Constant* LLVMDoubleVector ( double  f)

Returns an LLVM double vector constant of the given value smeared across all elements

Definition at line 380 of file llvmutil.cpp.

References g, LLVMDouble(), Globals::target, and Target::vectorWidth.

Referenced by ConstExpr::GetConstant(), ConstExpr::GetValue(), lLLVMConstantValue(), and lTypeConvAtomic().

llvm::Constant* LLVMDoubleVector ( const double *  f)

Returns an LLVM double vector based on the given array of values. The array should have g->target.vectorWidth elements.

Definition at line 390 of file llvmutil.cpp.

References g, LLVMDouble(), Globals::target, and Target::vectorWidth.

void LLVMDumpValue ( llvm::Value *  v)

This is a utility routine for debugging that dumps out the given LLVM value as well as (recursively) all of the other values that it depends on.

Definition at line 1385 of file llvmutil.cpp.

References lDumpValue(), and stderr.

Referenced by lGetBasePtrAndOffsets(), LLVMVectorIsLinear(), LLVMVectorValuesAllEqual(), lVectorShiftRightAllEqual(), and GatherCoalescePass::runOnBasicBlock().

llvm::Value* LLVMExtractFirstVectorElement ( llvm::Value *  v)

Given a vector-typed value, this function returns the value of its first element. Rather than just doing the straightforward thing of using a single extractelement instruction to do this, this function tries to rewrite the computation for the first element in scalar form; this is generally more efficient than computing the entire vector's worth of values just to extract the first element, in cases where only the first element's value is needed.

Definition at line 1504 of file llvmutil.cpp.

References lExtractFirstVectorElement().

Referenced by lComputeBasePtr(), and lComputeCommonPointer().

bool LLVMExtractVectorInts ( llvm::Value *  v,
int64_t  ret[],
int *  nElts 
)

Given a vector-typed value v, if the vector is a vector with constant element values, this function extracts those element values into the ret[] array and returns the number of elements (i.e. the vector type's width) in *nElts. It returns true if successful and false if the given vector is not in fact a vector of constants.

Definition at line 643 of file llvmutil.cpp.

References Assert, and NULL.

Referenced by lAllDivBaseEqual(), lCheckAndForLinear(), lExtractConstOffsets(), lVectorIs32BitInts(), and lVectorShiftRightAllEqual().

void LLVMFlattenInsertChain ( llvm::InsertElementInst *  ie,
int  vectorWidth,
llvm::Value **  elements 
)

This function takes chains of InsertElement instructions along the lines of:

v0 = insertelement undef, value_0, i32 index_0 v1 = insertelement v1, value_1, i32 index_1 ... vn = insertelement vn-1, value_n-1, i32 index_n-1

and initializes the provided elements array such that the i'th llvm::Value * in the array is the element that was inserted into the i'th element of the vector.

When the chain of insertelement instruction comes to an end, the only base case that this function handles is the initial value being a constant vector. For anything more complex (e.g. some other arbitrary value, it doesn't try to extract element values into the returned array.

Definition at line 599 of file llvmutil.cpp.

References Assert, int32_t, lGetIntValue(), and NULL.

Referenced by lExtractFirstVectorElement(), lGetBasePointer(), lIsExactMultiple(), and lVectorValuesAllEqual().

llvm::Constant* LLVMFloat ( float  f)

Returns an LLVM float constant of the given value

Definition at line 235 of file llvmutil.cpp.

References Globals::ctx, and g.

Referenced by ConstExpr::GetConstant(), ConstExpr::GetValue(), lLLVMConstantValue(), LLVMFloatVector(), and lTypeConvAtomic().

llvm::Constant* LLVMFloatVector ( float  f)

Returns an LLVM float vector constant of the given value smeared across all elements

Definition at line 361 of file llvmutil.cpp.

References g, LLVMFloat(), Globals::target, and Target::vectorWidth.

Referenced by ConstExpr::GetConstant(), ConstExpr::GetValue(), lLLVMConstantValue(), and lTypeConvAtomic().

llvm::Constant* LLVMFloatVector ( const float *  f)

Returns an LLVM float vector based on the given array of values. The array should have g->target.vectorWidth elements.

Definition at line 371 of file llvmutil.cpp.

References g, LLVMFloat(), Globals::target, and Target::vectorWidth.

const char* LLVMGetName ( llvm::Value *  v,
const char *   
)
const char* LLVMGetName ( const char *  op,
llvm::Value *  v1,
llvm::Value *  v2 
)

Definition at line 1567 of file llvmutil.cpp.

llvm::ConstantInt* LLVMInt16 ( int16_t  i)

Returns an LLVM i16 constant of the given value

Definition at line 193 of file llvmutil.cpp.

References Globals::ctx, and g.

Referenced by ConstExpr::GetConstant(), ConstExpr::GetValue(), lLLVMConstantValue(), LLVMInt16Vector(), and lTypeConvAtomic().

llvm::Constant* LLVMInt16Vector ( int16_t  i)

Returns an LLVM i16 vector constant of the given value smeared across all elements

Definition at line 285 of file llvmutil.cpp.

References g, LLVMInt16(), Globals::target, and Target::vectorWidth.

Referenced by ConstExpr::GetConstant(), ConstExpr::GetValue(), lLLVMConstantValue(), and lTypeConvAtomic().

llvm::Constant* LLVMInt16Vector ( const int16_t *  i)

Returns an LLVM i16 vector based on the given array of values. The array should have g->target.vectorWidth elements.

Definition at line 295 of file llvmutil.cpp.

References g, LLVMInt16(), Globals::target, and Target::vectorWidth.

llvm::ConstantInt* LLVMInt32 ( int32_t  i)
llvm::Constant* LLVMInt32Vector ( int32_t  i)
llvm::Constant* LLVMInt32Vector ( const int32_t i)

Returns an LLVM i32 vector based on the given array of values. The array should have g->target.vectorWidth elements.

Definition at line 333 of file llvmutil.cpp.

References g, LLVMInt32(), Globals::target, and Target::vectorWidth.

llvm::ConstantInt* LLVMInt64 ( int64_t  i)
llvm::Constant* LLVMInt64Vector ( int64_t  i)
llvm::Constant* LLVMInt64Vector ( const int64_t *  i)

Returns an LLVM i64 vector based on the given array of values. The array should have g->target.vectorWidth elements.

Definition at line 409 of file llvmutil.cpp.

References g, LLVMInt64(), Globals::target, and Target::vectorWidth.

llvm::ConstantInt* LLVMInt8 ( int8_t  i)

Returns an LLVM i8 constant of the given value

Definition at line 179 of file llvmutil.cpp.

References Globals::ctx, and g.

Referenced by ConstExpr::GetConstant(), ConstExpr::GetValue(), lLLVMConstantValue(), LLVMInt8Vector(), and lTypeConvAtomic().

llvm::Constant* LLVMInt8Vector ( int8_t  i)

Returns an LLVM i8 vector constant of the given value smeared across all elements

Definition at line 247 of file llvmutil.cpp.

References g, LLVMInt8(), Globals::target, and Target::vectorWidth.

Referenced by ConstExpr::GetConstant(), ConstExpr::GetValue(), lLLVMConstantValue(), and lTypeConvAtomic().

llvm::Constant* LLVMInt8Vector ( const int8_t *  i)

Returns an LLVM i8 vector based on the given array of values. The array should have g->target.vectorWidth elements.

Definition at line 257 of file llvmutil.cpp.

References g, LLVMInt8(), Globals::target, and Target::vectorWidth.

llvm::Constant* LLVMIntAsType ( int64_t  ,
llvm::Type *  t 
)

Returns a constant integer or vector (according to the given type) of the given signed integer value.

Definition at line 476 of file llvmutil.cpp.

References NULL.

Referenced by lComputeSliceIndex(), lEmitBinaryPointerArith(), lGSBaseOffsetsGetMoreConst(), and lGSToGSBaseOffsets().

llvm::Value* LLVMShuffleVectors ( llvm::Value *  v1,
llvm::Value *  v2,
int32_t  shuf[],
int  shufSize,
llvm::Instruction *  insertBefore 
)

This is a utility function for vector shuffling; it takes two vectors v1 and v2, and a compile-time constant set of integer permutations in shuf[] and returns a new vector of length shufSize that represents the corresponding shufflevector operation.

Shuffle two vectors together with a ShuffleVectorInst, returning a vector with shufSize elements, where the shuf[] array offsets are used to determine which element from the two given vectors is used for each result element.

Definition at line 1540 of file llvmutil.cpp.

References LLVMTypes::Int32Type, and LLVMInt32().

Referenced by lApplyLoad4(), LLVMConcatVectors(), and lSplit8WideLoads().

llvm::ConstantInt* LLVMUInt16 ( uint16_t  i)

Returns an LLVM i16 constant of the given value

Definition at line 200 of file llvmutil.cpp.

References Globals::ctx, and g.

Referenced by ConstExpr::GetConstant(), ConstExpr::GetValue(), lLLVMConstantValue(), and LLVMUInt16Vector().

llvm::Constant* LLVMUInt16Vector ( uint16_t  i)

Returns an LLVM i16 vector constant of the given value smeared across all elements

Definition at line 304 of file llvmutil.cpp.

References g, LLVMUInt16(), Globals::target, and Target::vectorWidth.

Referenced by ConstExpr::GetConstant(), ConstExpr::GetValue(), and lLLVMConstantValue().

llvm::Constant* LLVMUInt16Vector ( const uint16_t *  i)

Returns an LLVM i16 vector based on the given array of values. The array should have g->target.vectorWidth elements.

Definition at line 314 of file llvmutil.cpp.

References g, LLVMUInt16(), Globals::target, and Target::vectorWidth.

llvm::ConstantInt* LLVMUInt32 ( uint32_t  i)

Returns an LLVM i32 constant of the given value

Definition at line 214 of file llvmutil.cpp.

References Globals::ctx, and g.

Referenced by ConstExpr::GetConstant(), ConstExpr::GetValue(), lLLVMConstantValue(), and LLVMUInt32Vector().

llvm::Constant* LLVMUInt32Vector ( uint32_t  i)

Returns an LLVM i32 vector constant of the given value smeared across all elements

Definition at line 342 of file llvmutil.cpp.

References g, LLVMUInt32(), Globals::target, and Target::vectorWidth.

Referenced by ConstExpr::GetConstant(), ConstExpr::GetValue(), and lLLVMConstantValue().

llvm::Constant* LLVMUInt32Vector ( const uint32_t *  i)

Returns an LLVM i32 vector based on the given array of values. The array should have g->target.vectorWidth elements.

Definition at line 352 of file llvmutil.cpp.

References g, LLVMUInt32(), Globals::target, and Target::vectorWidth.

llvm::ConstantInt* LLVMUInt64 ( uint64_t  i)

Returns an LLVM i64 constant of the given value

Definition at line 228 of file llvmutil.cpp.

References Globals::ctx, and g.

Referenced by ConstExpr::GetConstant(), ConstExpr::GetValue(), lLLVMConstantValue(), and LLVMUInt64Vector().

llvm::Constant* LLVMUInt64Vector ( uint64_t  i)

Returns an LLVM i64 vector constant of the given value smeared across all elements

Definition at line 418 of file llvmutil.cpp.

References g, LLVMUInt64(), Globals::target, and Target::vectorWidth.

Referenced by ConstExpr::GetConstant(), ConstExpr::GetValue(), and lLLVMConstantValue().

llvm::Constant* LLVMUInt64Vector ( const uint64_t *  i)

Returns an LLVM i64 vector based on the given array of values. The array should have g->target.vectorWidth elements.

Definition at line 428 of file llvmutil.cpp.

References g, LLVMUInt64(), Globals::target, and Target::vectorWidth.

llvm::ConstantInt* LLVMUInt8 ( uint8_t  i)

Returns an LLVM i8 constant of the given value

Definition at line 186 of file llvmutil.cpp.

References Globals::ctx, and g.

Referenced by ConstExpr::GetConstant(), ConstExpr::GetValue(), lLLVMConstantValue(), and LLVMUInt8Vector().

llvm::Constant* LLVMUInt8Vector ( uint8_t  i)

Returns an LLVM i8 vector constant of the given value smeared across all elements

Definition at line 266 of file llvmutil.cpp.

References g, LLVMUInt8(), Globals::target, and Target::vectorWidth.

Referenced by ConstExpr::GetConstant(), ConstExpr::GetValue(), and lLLVMConstantValue().

llvm::Constant* LLVMUInt8Vector ( const uint8_t *  i)

Returns an LLVM i8 vector based on the given array of values. The array should have g->target.vectorWidth elements.

Definition at line 276 of file llvmutil.cpp.

References g, LLVMUInt8(), Globals::target, and Target::vectorWidth.

llvm::Constant* LLVMUIntAsType ( uint64_t  ,
llvm::Type *  t 
)

Returns a constant integer or vector (according to the given type) of the given unsigned integer value.

Definition at line 494 of file llvmutil.cpp.

References NULL.

bool LLVMVectorIsLinear ( llvm::Value *  v,
int  stride 
)

Given vector of integer-typed values, this function returns true if it can determine that the elements of the vector have a step of 'stride' between their values and false otherwise. This function tries to handle as many possibilities as possible, including things like all elements equal to some non-constant value plus an integer offset, etc. Needless to say (the halting problem and all that), it may return false for some vectors that are in fact linear.

Given vector of integer-typed values, see if the elements of the array have a step of 'stride' between their values. This function tries to handle as many possibilities as possible, including things like all elements equal to some non-constant value plus an integer offset, etc.

Definition at line 1346 of file llvmutil.cpp.

References Assert, Debug(), Globals::debugPrint, g, LLVMDumpValue(), lVectorIsLinear(), and NULL.

Referenced by lGSToLoadStore().

bool LLVMVectorValuesAllEqual ( llvm::Value *  v)

Tests to see if all of the elements of the vector in the 'v' parameter are equal. Like lValuesAreEqual(), this is a conservative test and may return false for arrays where the values are actually all equal.

Tests to see if all of the elements of the vector in the 'v' parameter are equal. This is a conservative test and may return false for arrays where the values are actually all equal.

Definition at line 1076 of file llvmutil.cpp.

References Assert, Debug(), Globals::debugPrint, g, LLVMDumpValue(), lVectorValuesAllEqual(), and NULL.

Referenced by lGSToLoadStore(), lIsExactMultiple(), and GatherCoalescePass::runOnBasicBlock().


Variable Documentation

llvm::Constant * LLVMFalse
llvm::Constant* LLVMMaskAllOff
llvm::Constant* LLVMMaskAllOn
llvm::Constant* LLVMTrue

These variables hold the corresponding LLVM constant values as a convenience to code elsewhere in the system.

Definition at line 85 of file llvmutil.cpp.

Referenced by ForStmt::EmitCode(), ForeachStmt::EmitCode(), ConstExpr::GetConstant(), ConstExpr::GetValue(), InitLLVMUtil(), lEmitLogicalOp(), lLLVMConstantValue(), LLVMBoolVector(), and IsCompileTimeConstantPass::runOnBasicBlock().