hohn/codeql
1
0
Fork 0
mirror of https://github.com/github/codeql.git synced 2025-12-17 01:03:14 +01:00
Code Issues Packages Projects Releases Wiki Activity

Merge from master and share value numbering

Browse Source
This commit is contained in:
Dave Bartolomeo
2019-09-27 17:40:43 -07:00
parent f76334c24a 387e21e12c
commit bcd987cdf1
32 changed files with 2676 additions and 272 deletions
Download Patch File Download Diff File Expand all files Collapse all files

61
cpp/ql/src/semmle/code/cpp/ir/implementation/aliased_ssa/gvn/ValueNumbering.qll
View File

@@ -1,5 +1,5 @@
private import internal.ValueNumberingInternal
private import cpp
private import internal.ValueNumberingImports
private import IR
/**
@@ -23,31 +23,31 @@ newtype TValueNumber =
initializeParameterValueNumber(_, irFunc, var)
} or
TInitializeThisValueNumber(IRFunction irFunc) { initializeThisValueNumber(_, irFunc) } or
TConstantValueNumber(IRFunction irFunc, Type type, string value) {
TConstantValueNumber(IRFunction irFunc, IRType type, string value) {
constantValueNumber(_, irFunc, type, value)
} or
TStringConstantValueNumber(IRFunction irFunc, Type type, string value) {
TStringConstantValueNumber(IRFunction irFunc, IRType type, string value) {
stringConstantValueNumber(_, irFunc, type, value)
} or
TFieldAddressValueNumber(IRFunction irFunc, Field field, ValueNumber objectAddress) {
TFieldAddressValueNumber(IRFunction irFunc, Language::Field field, ValueNumber objectAddress) {
fieldAddressValueNumber(_, irFunc, field, objectAddress)
} or
TBinaryValueNumber(
IRFunction irFunc, Opcode opcode, Type type, ValueNumber leftOperand, ValueNumber rightOperand
IRFunction irFunc, Opcode opcode, IRType type, ValueNumber leftOperand, ValueNumber rightOperand
) {
binaryValueNumber(_, irFunc, opcode, type, leftOperand, rightOperand)
} or
TPointerArithmeticValueNumber(
IRFunction irFunc, Opcode opcode, Type type, int elementSize, ValueNumber leftOperand,
IRFunction irFunc, Opcode opcode, IRType type, int elementSize, ValueNumber leftOperand,
ValueNumber rightOperand
) {
pointerArithmeticValueNumber(_, irFunc, opcode, type, elementSize, leftOperand, rightOperand)
} or
TUnaryValueNumber(IRFunction irFunc, Opcode opcode, Type type, ValueNumber operand) {
TUnaryValueNumber(IRFunction irFunc, Opcode opcode, IRType type, ValueNumber operand) {
unaryValueNumber(_, irFunc, opcode, type, operand)
} or
TInheritanceConversionValueNumber(
IRFunction irFunc, Opcode opcode, Class baseClass, Class derivedClass, ValueNumber operand
IRFunction irFunc, Opcode opcode, Language::Class baseClass, Language::Class derivedClass, ValueNumber operand
) {
inheritanceConversionValueNumber(_, irFunc, opcode, baseClass, derivedClass, operand)
} or
@@ -59,7 +59,7 @@ newtype TValueNumber =
class ValueNumber extends TValueNumber {
final string toString() { result = getExampleInstruction().getResultId() }
final Location getLocation() { result = getExampleInstruction().getLocation() }
final Language::Location getLocation() { result = getExampleInstruction().getLocation() }
/**
* Gets the instructions that have been assigned this value number. This will always produce at
@@ -150,23 +150,23 @@ private predicate initializeThisValueNumber(InitializeThisInstruction instr, IRF
}
private predicate constantValueNumber(
ConstantInstruction instr, IRFunction irFunc, Type type, string value
ConstantInstruction instr, IRFunction irFunc, IRType type, string value
) {
instr.getEnclosingIRFunction() = irFunc and
instr.getResultType() = type and
instr.getResultIRType() = type and
instr.getValue() = value
}
private predicate stringConstantValueNumber(
StringConstantInstruction instr, IRFunction irFunc, Type type, string value
StringConstantInstruction instr, IRFunction irFunc, IRType type, string value
) {
instr.getEnclosingIRFunction() = irFunc and
instr.getResultType() = type and
instr.getResultIRType() = type and
instr.getValue().getValue() = value
}
private predicate fieldAddressValueNumber(
FieldAddressInstruction instr, IRFunction irFunc, Field field, ValueNumber objectAddress
FieldAddressInstruction instr, IRFunction irFunc, Language::Field field, ValueNumber objectAddress
) {
instr.getEnclosingIRFunction() = irFunc and
instr.getField() = field and
@@ -174,43 +174,43 @@ private predicate fieldAddressValueNumber(
}
private predicate binaryValueNumber(
BinaryInstruction instr, IRFunction irFunc, Opcode opcode, Type type, ValueNumber leftOperand,
BinaryInstruction instr, IRFunction irFunc, Opcode opcode, IRType type, ValueNumber leftOperand,
ValueNumber rightOperand
) {
instr.getEnclosingIRFunction() = irFunc and
not instr instanceof PointerArithmeticInstruction and
instr.getOpcode() = opcode and
instr.getResultType() = type and
instr.getResultIRType() = type and
valueNumber(instr.getLeft()) = leftOperand and
valueNumber(instr.getRight()) = rightOperand
}
private predicate pointerArithmeticValueNumber(
PointerArithmeticInstruction instr, IRFunction irFunc, Opcode opcode, Type type, int elementSize,
PointerArithmeticInstruction instr, IRFunction irFunc, Opcode opcode, IRType type, int elementSize,
ValueNumber leftOperand, ValueNumber rightOperand
) {
instr.getEnclosingIRFunction() = irFunc and
instr.getOpcode() = opcode and
instr.getResultType() = type and
instr.getResultIRType() = type and
instr.getElementSize() = elementSize and
valueNumber(instr.getLeft()) = leftOperand and
valueNumber(instr.getRight()) = rightOperand
}
private predicate unaryValueNumber(
UnaryInstruction instr, IRFunction irFunc, Opcode opcode, Type type, ValueNumber operand
UnaryInstruction instr, IRFunction irFunc, Opcode opcode, IRType type, ValueNumber operand
) {
instr.getEnclosingIRFunction() = irFunc and
not instr instanceof InheritanceConversionInstruction and
not instr instanceof CopyInstruction and
instr.getOpcode() = opcode and
instr.getResultType() = type and
instr.getResultIRType() = type and
valueNumber(instr.getUnary()) = operand
}
private predicate inheritanceConversionValueNumber(
InheritanceConversionInstruction instr, IRFunction irFunc, Opcode opcode, Class baseClass,
Class derivedClass, ValueNumber operand
InheritanceConversionInstruction instr, IRFunction irFunc, Opcode opcode,
Language::Class baseClass, Language::Class derivedClass, ValueNumber operand
) {
instr.getEnclosingIRFunction() = irFunc and
instr.getOpcode() = opcode and
@@ -225,7 +225,7 @@ private predicate inheritanceConversionValueNumber(
*/
private predicate uniqueValueNumber(Instruction instr, IRFunction irFunc) {
instr.getEnclosingIRFunction() = irFunc and
not instr.getResultType() instanceof VoidType and
not instr.getResultIRType() instanceof IRVoidType and
not numberableInstruction(instr)
}
@@ -269,38 +269,39 @@ private ValueNumber nonUniqueValueNumber(Instruction instr) {
initializeThisValueNumber(instr, irFunc) and
result = TInitializeThisValueNumber(irFunc)
or
exists(Type type, string value |
exists(IRType type, string value |
constantValueNumber(instr, irFunc, type, value) and
result = TConstantValueNumber(irFunc, type, value)
)
or
exists(Type type, string value |
exists(IRType type, string value |
stringConstantValueNumber(instr, irFunc, type, value) and
result = TStringConstantValueNumber(irFunc, type, value)
)
or
exists(Field field, ValueNumber objectAddress |
exists(Language::Field field, ValueNumber objectAddress |
fieldAddressValueNumber(instr, irFunc, field, objectAddress) and
result = TFieldAddressValueNumber(irFunc, field, objectAddress)
)
or
exists(Opcode opcode, Type type, ValueNumber leftOperand, ValueNumber rightOperand |
exists(Opcode opcode, IRType type, ValueNumber leftOperand, ValueNumber rightOperand |
binaryValueNumber(instr, irFunc, opcode, type, leftOperand, rightOperand) and
result = TBinaryValueNumber(irFunc, opcode, type, leftOperand, rightOperand)
)
or
exists(Opcode opcode, Type type, ValueNumber operand |
exists(Opcode opcode, IRType type, ValueNumber operand |
unaryValueNumber(instr, irFunc, opcode, type, operand) and
result = TUnaryValueNumber(irFunc, opcode, type, operand)
)
or
exists(Opcode opcode, Class baseClass, Class derivedClass, ValueNumber operand |
exists(Opcode opcode, Language::Class baseClass, Language::Class derivedClass,
ValueNumber operand |
inheritanceConversionValueNumber(instr, irFunc, opcode, baseClass, derivedClass, operand) and
result = TInheritanceConversionValueNumber(irFunc, opcode, baseClass, derivedClass, operand)
)
or
exists(
Opcode opcode, Type type, int elementSize, ValueNumber leftOperand, ValueNumber rightOperand
Opcode opcode, IRType type, int elementSize, ValueNumber leftOperand, ValueNumber rightOperand
|
pointerArithmeticValueNumber(instr, irFunc, opcode, type, elementSize, leftOperand,
rightOperand) and

2
cpp/ql/src/semmle/code/cpp/ir/implementation/aliased_ssa/gvn/internal/ValueNumberingImports.qll Normal file
View File

@@ -0,0 +1,2 @@
import semmle.code.cpp.ir.internal.Overlap
import semmle.code.cpp.ir.internal.IRCppLanguage as Language

61
cpp/ql/src/semmle/code/cpp/ir/implementation/raw/gvn/ValueNumbering.qll
View File

@@ -1,5 +1,5 @@
private import internal.ValueNumberingInternal
private import cpp
private import internal.ValueNumberingImports
private import IR
/**
@@ -23,31 +23,31 @@ newtype TValueNumber =
initializeParameterValueNumber(_, irFunc, var)
} or
TInitializeThisValueNumber(IRFunction irFunc) { initializeThisValueNumber(_, irFunc) } or
TConstantValueNumber(IRFunction irFunc, Type type, string value) {
TConstantValueNumber(IRFunction irFunc, IRType type, string value) {
constantValueNumber(_, irFunc, type, value)
} or
TStringConstantValueNumber(IRFunction irFunc, Type type, string value) {
TStringConstantValueNumber(IRFunction irFunc, IRType type, string value) {
stringConstantValueNumber(_, irFunc, type, value)
} or
TFieldAddressValueNumber(IRFunction irFunc, Field field, ValueNumber objectAddress) {
TFieldAddressValueNumber(IRFunction irFunc, Language::Field field, ValueNumber objectAddress) {
fieldAddressValueNumber(_, irFunc, field, objectAddress)
} or
TBinaryValueNumber(
IRFunction irFunc, Opcode opcode, Type type, ValueNumber leftOperand, ValueNumber rightOperand
IRFunction irFunc, Opcode opcode, IRType type, ValueNumber leftOperand, ValueNumber rightOperand
) {
binaryValueNumber(_, irFunc, opcode, type, leftOperand, rightOperand)
} or
TPointerArithmeticValueNumber(
IRFunction irFunc, Opcode opcode, Type type, int elementSize, ValueNumber leftOperand,
IRFunction irFunc, Opcode opcode, IRType type, int elementSize, ValueNumber leftOperand,
ValueNumber rightOperand
) {
pointerArithmeticValueNumber(_, irFunc, opcode, type, elementSize, leftOperand, rightOperand)
} or
TUnaryValueNumber(IRFunction irFunc, Opcode opcode, Type type, ValueNumber operand) {
TUnaryValueNumber(IRFunction irFunc, Opcode opcode, IRType type, ValueNumber operand) {
unaryValueNumber(_, irFunc, opcode, type, operand)
} or
TInheritanceConversionValueNumber(
IRFunction irFunc, Opcode opcode, Class baseClass, Class derivedClass, ValueNumber operand
IRFunction irFunc, Opcode opcode, Language::Class baseClass, Language::Class derivedClass, ValueNumber operand
) {
inheritanceConversionValueNumber(_, irFunc, opcode, baseClass, derivedClass, operand)
} or
@@ -59,7 +59,7 @@ newtype TValueNumber =
class ValueNumber extends TValueNumber {
final string toString() { result = getExampleInstruction().getResultId() }
final Location getLocation() { result = getExampleInstruction().getLocation() }
final Language::Location getLocation() { result = getExampleInstruction().getLocation() }
/**
* Gets the instructions that have been assigned this value number. This will always produce at
@@ -150,23 +150,23 @@ private predicate initializeThisValueNumber(InitializeThisInstruction instr, IRF
}
private predicate constantValueNumber(
ConstantInstruction instr, IRFunction irFunc, Type type, string value
ConstantInstruction instr, IRFunction irFunc, IRType type, string value
) {
instr.getEnclosingIRFunction() = irFunc and
instr.getResultType() = type and
instr.getResultIRType() = type and
instr.getValue() = value
}
private predicate stringConstantValueNumber(
StringConstantInstruction instr, IRFunction irFunc, Type type, string value
StringConstantInstruction instr, IRFunction irFunc, IRType type, string value
) {
instr.getEnclosingIRFunction() = irFunc and
instr.getResultType() = type and
instr.getResultIRType() = type and
instr.getValue().getValue() = value
}
private predicate fieldAddressValueNumber(
FieldAddressInstruction instr, IRFunction irFunc, Field field, ValueNumber objectAddress
FieldAddressInstruction instr, IRFunction irFunc, Language::Field field, ValueNumber objectAddress
) {
instr.getEnclosingIRFunction() = irFunc and
instr.getField() = field and
@@ -174,43 +174,43 @@ private predicate fieldAddressValueNumber(
}
private predicate binaryValueNumber(
BinaryInstruction instr, IRFunction irFunc, Opcode opcode, Type type, ValueNumber leftOperand,
BinaryInstruction instr, IRFunction irFunc, Opcode opcode, IRType type, ValueNumber leftOperand,
ValueNumber rightOperand
) {
instr.getEnclosingIRFunction() = irFunc and
not instr instanceof PointerArithmeticInstruction and
instr.getOpcode() = opcode and
instr.getResultType() = type and
instr.getResultIRType() = type and
valueNumber(instr.getLeft()) = leftOperand and
valueNumber(instr.getRight()) = rightOperand
}
private predicate pointerArithmeticValueNumber(
PointerArithmeticInstruction instr, IRFunction irFunc, Opcode opcode, Type type, int elementSize,
PointerArithmeticInstruction instr, IRFunction irFunc, Opcode opcode, IRType type, int elementSize,
ValueNumber leftOperand, ValueNumber rightOperand
) {
instr.getEnclosingIRFunction() = irFunc and
instr.getOpcode() = opcode and
instr.getResultType() = type and
instr.getResultIRType() = type and
instr.getElementSize() = elementSize and
valueNumber(instr.getLeft()) = leftOperand and
valueNumber(instr.getRight()) = rightOperand
}
private predicate unaryValueNumber(
UnaryInstruction instr, IRFunction irFunc, Opcode opcode, Type type, ValueNumber operand
UnaryInstruction instr, IRFunction irFunc, Opcode opcode, IRType type, ValueNumber operand
) {
instr.getEnclosingIRFunction() = irFunc and
not instr instanceof InheritanceConversionInstruction and
not instr instanceof CopyInstruction and
instr.getOpcode() = opcode and
instr.getResultType() = type and
instr.getResultIRType() = type and
valueNumber(instr.getUnary()) = operand
}
private predicate inheritanceConversionValueNumber(
InheritanceConversionInstruction instr, IRFunction irFunc, Opcode opcode, Class baseClass,
Class derivedClass, ValueNumber operand
InheritanceConversionInstruction instr, IRFunction irFunc, Opcode opcode,
Language::Class baseClass, Language::Class derivedClass, ValueNumber operand
) {
instr.getEnclosingIRFunction() = irFunc and
instr.getOpcode() = opcode and
@@ -225,7 +225,7 @@ private predicate inheritanceConversionValueNumber(
*/
private predicate uniqueValueNumber(Instruction instr, IRFunction irFunc) {
instr.getEnclosingIRFunction() = irFunc and
not instr.getResultType() instanceof VoidType and
not instr.getResultIRType() instanceof IRVoidType and
not numberableInstruction(instr)
}
@@ -269,38 +269,39 @@ private ValueNumber nonUniqueValueNumber(Instruction instr) {
initializeThisValueNumber(instr, irFunc) and
result = TInitializeThisValueNumber(irFunc)
or
exists(Type type, string value |
exists(IRType type, string value |
constantValueNumber(instr, irFunc, type, value) and
result = TConstantValueNumber(irFunc, type, value)
)
or
exists(Type type, string value |
exists(IRType type, string value |
stringConstantValueNumber(instr, irFunc, type, value) and
result = TStringConstantValueNumber(irFunc, type, value)
)
or
exists(Field field, ValueNumber objectAddress |
exists(Language::Field field, ValueNumber objectAddress |
fieldAddressValueNumber(instr, irFunc, field, objectAddress) and
result = TFieldAddressValueNumber(irFunc, field, objectAddress)
)
or
exists(Opcode opcode, Type type, ValueNumber leftOperand, ValueNumber rightOperand |
exists(Opcode opcode, IRType type, ValueNumber leftOperand, ValueNumber rightOperand |
binaryValueNumber(instr, irFunc, opcode, type, leftOperand, rightOperand) and
result = TBinaryValueNumber(irFunc, opcode, type, leftOperand, rightOperand)
)
or
exists(Opcode opcode, Type type, ValueNumber operand |
exists(Opcode opcode, IRType type, ValueNumber operand |
unaryValueNumber(instr, irFunc, opcode, type, operand) and
result = TUnaryValueNumber(irFunc, opcode, type, operand)
)
or
exists(Opcode opcode, Class baseClass, Class derivedClass, ValueNumber operand |
exists(Opcode opcode, Language::Class baseClass, Language::Class derivedClass,
ValueNumber operand |
inheritanceConversionValueNumber(instr, irFunc, opcode, baseClass, derivedClass, operand) and
result = TInheritanceConversionValueNumber(irFunc, opcode, baseClass, derivedClass, operand)
)
or
exists(
Opcode opcode, Type type, int elementSize, ValueNumber leftOperand, ValueNumber rightOperand
Opcode opcode, IRType type, int elementSize, ValueNumber leftOperand, ValueNumber rightOperand
|
pointerArithmeticValueNumber(instr, irFunc, opcode, type, elementSize, leftOperand,
rightOperand) and

2
cpp/ql/src/semmle/code/cpp/ir/implementation/raw/gvn/internal/ValueNumberingImports.qll Normal file
View File

@@ -0,0 +1,2 @@
import semmle.code.cpp.ir.internal.Overlap
import semmle.code.cpp.ir.internal.IRCppLanguage as Language

61
cpp/ql/src/semmle/code/cpp/ir/implementation/unaliased_ssa/gvn/ValueNumbering.qll
View File

@@ -1,5 +1,5 @@
private import internal.ValueNumberingInternal
private import cpp
private import internal.ValueNumberingImports
private import IR
/**
@@ -23,31 +23,31 @@ newtype TValueNumber =
initializeParameterValueNumber(_, irFunc, var)
} or
TInitializeThisValueNumber(IRFunction irFunc) { initializeThisValueNumber(_, irFunc) } or
TConstantValueNumber(IRFunction irFunc, Type type, string value) {
TConstantValueNumber(IRFunction irFunc, IRType type, string value) {
constantValueNumber(_, irFunc, type, value)
} or
TStringConstantValueNumber(IRFunction irFunc, Type type, string value) {
TStringConstantValueNumber(IRFunction irFunc, IRType type, string value) {
stringConstantValueNumber(_, irFunc, type, value)
} or
TFieldAddressValueNumber(IRFunction irFunc, Field field, ValueNumber objectAddress) {
TFieldAddressValueNumber(IRFunction irFunc, Language::Field field, ValueNumber objectAddress) {
fieldAddressValueNumber(_, irFunc, field, objectAddress)
} or
TBinaryValueNumber(
IRFunction irFunc, Opcode opcode, Type type, ValueNumber leftOperand, ValueNumber rightOperand
IRFunction irFunc, Opcode opcode, IRType type, ValueNumber leftOperand, ValueNumber rightOperand
) {
binaryValueNumber(_, irFunc, opcode, type, leftOperand, rightOperand)
} or
TPointerArithmeticValueNumber(
IRFunction irFunc, Opcode opcode, Type type, int elementSize, ValueNumber leftOperand,
IRFunction irFunc, Opcode opcode, IRType type, int elementSize, ValueNumber leftOperand,
ValueNumber rightOperand
) {
pointerArithmeticValueNumber(_, irFunc, opcode, type, elementSize, leftOperand, rightOperand)
} or
TUnaryValueNumber(IRFunction irFunc, Opcode opcode, Type type, ValueNumber operand) {
TUnaryValueNumber(IRFunction irFunc, Opcode opcode, IRType type, ValueNumber operand) {
unaryValueNumber(_, irFunc, opcode, type, operand)
} or
TInheritanceConversionValueNumber(
IRFunction irFunc, Opcode opcode, Class baseClass, Class derivedClass, ValueNumber operand
IRFunction irFunc, Opcode opcode, Language::Class baseClass, Language::Class derivedClass, ValueNumber operand
) {
inheritanceConversionValueNumber(_, irFunc, opcode, baseClass, derivedClass, operand)
} or
@@ -59,7 +59,7 @@ newtype TValueNumber =
class ValueNumber extends TValueNumber {
final string toString() { result = getExampleInstruction().getResultId() }
final Location getLocation() { result = getExampleInstruction().getLocation() }
final Language::Location getLocation() { result = getExampleInstruction().getLocation() }
/**
* Gets the instructions that have been assigned this value number. This will always produce at
@@ -150,23 +150,23 @@ private predicate initializeThisValueNumber(InitializeThisInstruction instr, IRF
}
private predicate constantValueNumber(
ConstantInstruction instr, IRFunction irFunc, Type type, string value
ConstantInstruction instr, IRFunction irFunc, IRType type, string value
) {
instr.getEnclosingIRFunction() = irFunc and
instr.getResultType() = type and
instr.getResultIRType() = type and
instr.getValue() = value
}
private predicate stringConstantValueNumber(
StringConstantInstruction instr, IRFunction irFunc, Type type, string value
StringConstantInstruction instr, IRFunction irFunc, IRType type, string value
) {
instr.getEnclosingIRFunction() = irFunc and
instr.getResultType() = type and
instr.getResultIRType() = type and
instr.getValue().getValue() = value
}
private predicate fieldAddressValueNumber(
FieldAddressInstruction instr, IRFunction irFunc, Field field, ValueNumber objectAddress
FieldAddressInstruction instr, IRFunction irFunc, Language::Field field, ValueNumber objectAddress
) {
instr.getEnclosingIRFunction() = irFunc and
instr.getField() = field and
@@ -174,43 +174,43 @@ private predicate fieldAddressValueNumber(
}
private predicate binaryValueNumber(
BinaryInstruction instr, IRFunction irFunc, Opcode opcode, Type type, ValueNumber leftOperand,
BinaryInstruction instr, IRFunction irFunc, Opcode opcode, IRType type, ValueNumber leftOperand,
ValueNumber rightOperand
) {
instr.getEnclosingIRFunction() = irFunc and
not instr instanceof PointerArithmeticInstruction and
instr.getOpcode() = opcode and
instr.getResultType() = type and
instr.getResultIRType() = type and
valueNumber(instr.getLeft()) = leftOperand and
valueNumber(instr.getRight()) = rightOperand
}
private predicate pointerArithmeticValueNumber(
PointerArithmeticInstruction instr, IRFunction irFunc, Opcode opcode, Type type, int elementSize,
PointerArithmeticInstruction instr, IRFunction irFunc, Opcode opcode, IRType type, int elementSize,
ValueNumber leftOperand, ValueNumber rightOperand
) {
instr.getEnclosingIRFunction() = irFunc and
instr.getOpcode() = opcode and
instr.getResultType() = type and
instr.getResultIRType() = type and
instr.getElementSize() = elementSize and
valueNumber(instr.getLeft()) = leftOperand and
valueNumber(instr.getRight()) = rightOperand
}
private predicate unaryValueNumber(
UnaryInstruction instr, IRFunction irFunc, Opcode opcode, Type type, ValueNumber operand
UnaryInstruction instr, IRFunction irFunc, Opcode opcode, IRType type, ValueNumber operand
) {
instr.getEnclosingIRFunction() = irFunc and
not instr instanceof InheritanceConversionInstruction and
not instr instanceof CopyInstruction and
instr.getOpcode() = opcode and
instr.getResultType() = type and
instr.getResultIRType() = type and
valueNumber(instr.getUnary()) = operand
}
private predicate inheritanceConversionValueNumber(
InheritanceConversionInstruction instr, IRFunction irFunc, Opcode opcode, Class baseClass,
Class derivedClass, ValueNumber operand
InheritanceConversionInstruction instr, IRFunction irFunc, Opcode opcode,
Language::Class baseClass, Language::Class derivedClass, ValueNumber operand
) {
instr.getEnclosingIRFunction() = irFunc and
instr.getOpcode() = opcode and
@@ -225,7 +225,7 @@ private predicate inheritanceConversionValueNumber(
*/
private predicate uniqueValueNumber(Instruction instr, IRFunction irFunc) {
instr.getEnclosingIRFunction() = irFunc and
not instr.getResultType() instanceof VoidType and
not instr.getResultIRType() instanceof IRVoidType and
not numberableInstruction(instr)
}
@@ -269,38 +269,39 @@ private ValueNumber nonUniqueValueNumber(Instruction instr) {
initializeThisValueNumber(instr, irFunc) and
result = TInitializeThisValueNumber(irFunc)
or
exists(Type type, string value |
exists(IRType type, string value |
constantValueNumber(instr, irFunc, type, value) and
result = TConstantValueNumber(irFunc, type, value)
)
or
exists(Type type, string value |
exists(IRType type, string value |
stringConstantValueNumber(instr, irFunc, type, value) and
result = TStringConstantValueNumber(irFunc, type, value)
)
or
exists(Field field, ValueNumber objectAddress |
exists(Language::Field field, ValueNumber objectAddress |
fieldAddressValueNumber(instr, irFunc, field, objectAddress) and
result = TFieldAddressValueNumber(irFunc, field, objectAddress)
)
or
exists(Opcode opcode, Type type, ValueNumber leftOperand, ValueNumber rightOperand |
exists(Opcode opcode, IRType type, ValueNumber leftOperand, ValueNumber rightOperand |
binaryValueNumber(instr, irFunc, opcode, type, leftOperand, rightOperand) and
result = TBinaryValueNumber(irFunc, opcode, type, leftOperand, rightOperand)
)
or
exists(Opcode opcode, Type type, ValueNumber operand |
exists(Opcode opcode, IRType type, ValueNumber operand |
unaryValueNumber(instr, irFunc, opcode, type, operand) and
result = TUnaryValueNumber(irFunc, opcode, type, operand)
)
or
exists(Opcode opcode, Class baseClass, Class derivedClass, ValueNumber operand |
exists(Opcode opcode, Language::Class baseClass, Language::Class derivedClass,
ValueNumber operand |
inheritanceConversionValueNumber(instr, irFunc, opcode, baseClass, derivedClass, operand) and
result = TInheritanceConversionValueNumber(irFunc, opcode, baseClass, derivedClass, operand)
)
or
exists(
Opcode opcode, Type type, int elementSize, ValueNumber leftOperand, ValueNumber rightOperand
Opcode opcode, IRType type, int elementSize, ValueNumber leftOperand, ValueNumber rightOperand
|
pointerArithmeticValueNumber(instr, irFunc, opcode, type, elementSize, leftOperand,
rightOperand) and

2
cpp/ql/src/semmle/code/cpp/ir/implementation/unaliased_ssa/gvn/internal/ValueNumberingImports.qll Normal file
View File

@@ -0,0 +1,2 @@
import semmle.code.cpp.ir.internal.Overlap
import semmle.code.cpp.ir.internal.IRCppLanguage as Language