FunctionComparator - Compares two functions to determine whether or not.
Declared in <llvm/Transforms/Utils/FunctionComparator.h>
class FunctionComparator;they will generate machine code with the same behaviour. DataLayout is used if available. The comparator always fails conservatively (erring on the side of claiming that two functions are different).
| Name | Description |
|---|---|
FunctionComparator [constructor] | Construct a comparator for two functions using shared global numbering. |
compare | Test whether the two functions have equivalent behaviour. |
| Name | Description |
|---|---|
beginCompare | Start the comparison. |
cmpAPFloats | Compare two arbitrary-precision floating-point values for ordering. |
cmpAPInts | Compare two arbitrary-precision integers for ordering. |
cmpAligns | Compare two alignments for ordering. |
cmpBasicBlocks | Test whether two basic blocks have equivalent behaviour. |
cmpConstantRanges | Compare two constant ranges for ordering. |
cmpConstants | Constants comparison. Its analog to lexicographical comparison between hypothetical numbers of next format: <bitcastability-trait><raw-bit-contents> |
cmpGlobalValues | Compares two global values by number. Uses the GlobalNumbersState to identify the same gobals across function calls. |
cmpMem | Compare two memory regions as string contents for ordering. |
cmpNumbers | Compare two unsigned integers for ordering. |
cmpOperations | Compare two Instructions for equivalence, similar to Instruction::isSameOperationAs. |
cmpTypes | cmpType - compares two types, defines total ordering among the types set. |
cmpValues | Compare two values by serial numbers or constant/InlineAsm rules. |
cmpValuesAllowingSelfRef | Compare values, treating self-refs to the compared functions as equal. |
compareSignature | Compares the signature and other general attributes of the two functions. |
| Name | Description |
|---|---|
FnL | Left-hand function undergoing comparison. |
FnR | Right-hand function undergoing comparison. |