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Merge pull request #15969 from MathiasVP/disable-some-constant-folding

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C++: Disable _some_ constant folding in IR
This commit is contained in:
Mathias Vorreiter Pedersen
2024-03-20 09:25:06 +00:00
committed by GitHub
parent 1d956e1039 6bf1611f10
commit 9179f0bda6
10 changed files with 931 additions and 1 deletions
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6
cpp/ql/lib/semmle/code/cpp/ir/implementation/aliased_ssa/constant/ConstantAnalysis.qll
View File

@@ -38,6 +38,12 @@ private int getBinaryInstructionValue(BinaryInstruction instr) {
or
instr instanceof DivInstruction and result = div(left, right)
or
instr instanceof BitOrInstruction and result = bitOr(left, right)
or
instr instanceof BitAndInstruction and result = bitAnd(left, right)
or
instr instanceof BitXorInstruction and result = bitXor(left, right)
or
instr instanceof CompareEQInstruction and result = compareEQ(left, right)
or
instr instanceof CompareNEInstruction and result = compareNE(left, right)

6
cpp/ql/lib/semmle/code/cpp/ir/implementation/raw/constant/ConstantAnalysis.qll
View File

@@ -38,6 +38,12 @@ private int getBinaryInstructionValue(BinaryInstruction instr) {
or
instr instanceof DivInstruction and result = div(left, right)
or
instr instanceof BitOrInstruction and result = bitOr(left, right)
or
instr instanceof BitAndInstruction and result = bitAnd(left, right)
or
instr instanceof BitXorInstruction and result = bitXor(left, right)
or
instr instanceof CompareEQInstruction and result = compareEQ(left, right)
or
instr instanceof CompareNEInstruction and result = compareNE(left, right)

33
cpp/ql/lib/semmle/code/cpp/ir/implementation/raw/internal/TranslatedElement.qll
View File

@@ -40,12 +40,43 @@ IRTempVariable getIRTempVariable(Locatable ast, TempVariableTag tag) {
result.getTag() = tag
}
/** Gets an operand of `op`. */
private Expr getAnOperand(Operation op) { result = op.getAnOperand() }
/**
* Gets the number of nested operands of `op`. For example,
* `getNumberOfNestedBinaryOperands((1 + 2) + 3))` is `3`.
*/
private int getNumberOfNestedBinaryOperands(Operation op) { result = count(getAnOperand*(op)) }
/**
* Holds if `op` should not be translated to a `ConstantInstruction` as part of
* IR generation, even if the value of `op` is constant.
*/
private predicate ignoreConstantValue(Operation op) {
op instanceof BitwiseAndExpr
or
op instanceof BitwiseOrExpr
or
op instanceof BitwiseXorExpr
}
/**
* Holds if `expr` is a constant of a type that can be replaced directly with
* its value in the IR. This does not include address constants as we have no
* means to express those as QL values.
*/
predicate isIRConstant(Expr expr) { exists(expr.getValue()) }
predicate isIRConstant(Expr expr) {
exists(expr.getValue()) and
// We avoid constant folding certain operations since it's often useful to
// mark one of those as a source in dataflow, and if the operation is
// constant folded it's not possible to mark its operands as a source (or
// sink).
// But to avoid creating an outrageous amount of IR from very large
// constant expressions we fall back to constant folding if the operation
// has more than 50 operands (i.e., 1 + 2 + 3 + 4 + ... + 50)
if ignoreConstantValue(expr) then getNumberOfNestedBinaryOperands(expr) > 50 else any()
}
// Pulled out for performance. See
// https://github.com/github/codeql-coreql-team/issues/1044.

6
cpp/ql/lib/semmle/code/cpp/ir/implementation/unaliased_ssa/constant/ConstantAnalysis.qll
View File

@@ -38,6 +38,12 @@ private int getBinaryInstructionValue(BinaryInstruction instr) {
or
instr instanceof DivInstruction and result = div(left, right)
or
instr instanceof BitOrInstruction and result = bitOr(left, right)
or
instr instanceof BitAndInstruction and result = bitAnd(left, right)
or
instr instanceof BitXorInstruction and result = bitXor(left, right)
or
instr instanceof CompareEQInstruction and result = compareEQ(left, right)
or
instr instanceof CompareNEInstruction and result = compareNE(left, right)

12
cpp/ql/lib/semmle/code/cpp/ir/internal/IntegerPartial.qll
View File

@@ -89,6 +89,18 @@ int compareLE(int a, int b) { if a <= b then result = 1 else result = 0 }
bindingset[a, b]
int compareGE(int a, int b) { if a >= b then result = 1 else result = 0 }
/** Returns `a | b`. */
bindingset[a, b]
int bitOr(int a, int b) { result = a.bitOr(b) }
/** Returns `a & b`. */
bindingset[a, b]
int bitAnd(int a, int b) { result = a.bitAnd(b) }
/** Returns `a ^ b`. */
bindingset[a, b]
int bitXor(int a, int b) { result = a.bitXor(b) }
/**
* Returns `-a`. If the negation would overflow, there is no result.
*/

780
cpp/ql/test/library-tests/ir/ir/PrintAST.expected
View File

@@ -18688,6 +18688,786 @@ ir.cpp:
# 2376| getExpr(): [FunctionAccess] VoidToInt
# 2376| Type = [RoutineType] ..()(..)
# 2376| ValueCategory = prvalue
# 2381| [TopLevelFunction] int small_operation_should_not_be_constant_folded()
# 2381| <params>:
# 2381| getEntryPoint(): [BlockStmt] { ... }
# 2382| getStmt(0): [ReturnStmt] return ...
# 2382| getExpr(): [BitwiseXorExpr] ... ^ ...
# 2382| Type = [IntType] int
# 2382| Value = [BitwiseXorExpr] 3
# 2382| ValueCategory = prvalue
# 2382| getLeftOperand(): [Literal] 1
# 2382| Type = [IntType] int
# 2382| Value = [Literal] 1
# 2382| ValueCategory = prvalue
# 2382| getRightOperand(): [Literal] 2
# 2382| Type = [IntType] int
# 2382| Value = [Literal] 2
# 2382| ValueCategory = prvalue
# 2392| [TopLevelFunction] int large_operation_should_be_constant_folded()
# 2392| <params>:
# 2392| getEntryPoint(): [BlockStmt] { ... }
# 2393| getStmt(0): [ReturnStmt] return ...
# 2393| getExpr(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [BitwiseXorExpr] ... ^ ...
# 2393| Type = [IntType] int
# 2393| Value = [BitwiseXorExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getRightOperand(): [Literal] 1
# 2393| Type = [IntType] int
# 2393| Value = [Literal] 1
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getLeftOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getRightOperand().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
# 2393| getExpr().getFullyConverted(): [ParenthesisExpr] (...)
# 2393| Type = [IntType] int
# 2393| Value = [ParenthesisExpr] 0
# 2393| ValueCategory = prvalue
perf-regression.cpp:
# 4| [CopyAssignmentOperator] Big& Big::operator=(Big const&)
# 4| <params>:

30
cpp/ql/test/library-tests/ir/ir/aliased_ir.expected
View File

@@ -15135,6 +15135,36 @@ ir.cpp:
# 2374| v2374_7(void) = AliasedUse : m2374_3
# 2374| v2374_8(void) = ExitFunction :
# 2381| int small_operation_should_not_be_constant_folded()
# 2381| Block 0
# 2381| v2381_1(void) = EnterFunction :
# 2381| m2381_2(unknown) = AliasedDefinition :
# 2381| m2381_3(unknown) = InitializeNonLocal :
# 2381| m2381_4(unknown) = Chi : total:m2381_2, partial:m2381_3
# 2382| r2382_1(glval<int>) = VariableAddress[#return] :
# 2382| r2382_2(int) = Constant[1] :
# 2382| r2382_3(int) = Constant[2] :
# 2382| r2382_4(int) = BitXor : r2382_2, r2382_3
# 2382| m2382_5(int) = Store[#return] : &:r2382_1, r2382_4
# 2381| r2381_5(glval<int>) = VariableAddress[#return] :
# 2381| v2381_6(void) = ReturnValue : &:r2381_5, m2382_5
# 2381| v2381_7(void) = AliasedUse : m2381_3
# 2381| v2381_8(void) = ExitFunction :
# 2392| int large_operation_should_be_constant_folded()
# 2392| Block 0
# 2392| v2392_1(void) = EnterFunction :
# 2392| m2392_2(unknown) = AliasedDefinition :
# 2392| m2392_3(unknown) = InitializeNonLocal :
# 2392| m2392_4(unknown) = Chi : total:m2392_2, partial:m2392_3
# 2393| r2393_1(glval<int>) = VariableAddress[#return] :
# 2393| r2393_2(int) = Constant[0] :
# 2393| m2393_3(int) = Store[#return] : &:r2393_1, r2393_2
# 2392| r2392_5(glval<int>) = VariableAddress[#return] :
# 2392| v2392_6(void) = ReturnValue : &:r2392_5, m2393_3
# 2392| v2392_7(void) = AliasedUse : m2392_3
# 2392| v2392_8(void) = ExitFunction :
perf-regression.cpp:
# 6| void Big::Big()
# 6| Block 0

15
cpp/ql/test/library-tests/ir/ir/ir.cpp
View File

@@ -2378,4 +2378,19 @@ namespace return_routine_type {
}
int small_operation_should_not_be_constant_folded() {
return 1 ^ 2;
}
#define BINOP2(x) (x ^ x)
#define BINOP4(x) (BINOP2(x) ^ BINOP2(x))
#define BINOP8(x) (BINOP4(x) ^ BINOP4(x))
#define BINOP16(x) (BINOP8(x) ^ BINOP8(x))
#define BINOP32(x) (BINOP16(x) ^ BINOP16(x))
#define BINOP64(x) (BINOP32(x) ^ BINOP32(x))
int large_operation_should_be_constant_folded() {
return BINOP64(1);
}
// semmle-extractor-options: -std=c++20 --clang

16
cpp/ql/test/library-tests/ir/ir/operand_locations.expected
View File

@@ -12530,6 +12530,22 @@
| ir.cpp:2374:32:2374:47 | SideEffect | m2374_3 |
| ir.cpp:2376:9:2376:44 | Address | &:r2376_1 |
| ir.cpp:2376:16:2376:43 | StoreValue | r2376_2 |
| ir.cpp:2381:5:2381:49 | Address | &:r2381_5 |
| ir.cpp:2381:5:2381:49 | ChiPartial | partial:m2381_3 |
| ir.cpp:2381:5:2381:49 | ChiTotal | total:m2381_2 |
| ir.cpp:2381:5:2381:49 | Load | m2382_5 |
| ir.cpp:2381:5:2381:49 | SideEffect | m2381_3 |
| ir.cpp:2382:5:2382:17 | Address | &:r2382_1 |
| ir.cpp:2382:12:2382:12 | Left | r2382_2 |
| ir.cpp:2382:12:2382:16 | StoreValue | r2382_4 |
| ir.cpp:2382:16:2382:16 | Right | r2382_3 |
| ir.cpp:2392:5:2392:45 | Address | &:r2392_5 |
| ir.cpp:2392:5:2392:45 | ChiPartial | partial:m2392_3 |
| ir.cpp:2392:5:2392:45 | ChiTotal | total:m2392_2 |
| ir.cpp:2392:5:2392:45 | Load | m2393_3 |
| ir.cpp:2392:5:2392:45 | SideEffect | m2392_3 |
| ir.cpp:2393:5:2393:22 | Address | &:r2393_1 |
| ir.cpp:2393:12:2393:21 | StoreValue | r2393_2 |
| perf-regression.cpp:6:3:6:5 | Address | &:r6_5 |
| perf-regression.cpp:6:3:6:5 | Address | &:r6_5 |
| perf-regression.cpp:6:3:6:5 | Address | &:r6_7 |

28
cpp/ql/test/library-tests/ir/ir/raw_ir.expected
View File

@@ -13977,6 +13977,34 @@ ir.cpp:
# 2374| v2374_6(void) = AliasedUse : ~m?
# 2374| v2374_7(void) = ExitFunction :
# 2381| int small_operation_should_not_be_constant_folded()
# 2381| Block 0
# 2381| v2381_1(void) = EnterFunction :
# 2381| mu2381_2(unknown) = AliasedDefinition :
# 2381| mu2381_3(unknown) = InitializeNonLocal :
# 2382| r2382_1(glval<int>) = VariableAddress[#return] :
# 2382| r2382_2(int) = Constant[1] :
# 2382| r2382_3(int) = Constant[2] :
# 2382| r2382_4(int) = BitXor : r2382_2, r2382_3
# 2382| mu2382_5(int) = Store[#return] : &:r2382_1, r2382_4
# 2381| r2381_4(glval<int>) = VariableAddress[#return] :
# 2381| v2381_5(void) = ReturnValue : &:r2381_4, ~m?
# 2381| v2381_6(void) = AliasedUse : ~m?
# 2381| v2381_7(void) = ExitFunction :
# 2392| int large_operation_should_be_constant_folded()
# 2392| Block 0
# 2392| v2392_1(void) = EnterFunction :
# 2392| mu2392_2(unknown) = AliasedDefinition :
# 2392| mu2392_3(unknown) = InitializeNonLocal :
# 2393| r2393_1(glval<int>) = VariableAddress[#return] :
# 2393| r2393_2(int) = Constant[0] :
# 2393| mu2393_3(int) = Store[#return] : &:r2393_1, r2393_2
# 2392| r2392_4(glval<int>) = VariableAddress[#return] :
# 2392| v2392_5(void) = ReturnValue : &:r2392_4, ~m?
# 2392| v2392_6(void) = AliasedUse : ~m?
# 2392| v2392_7(void) = ExitFunction :
perf-regression.cpp:
# 6| void Big::Big()
# 6| Block 0