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Rules: 1. SCEVUnknown is a pointer if and only if the LLVM IR value is a pointer. 2. SCEVPtrToInt is never a pointer. 3. If any other SCEV expression has no pointer operands, the result is an integer. 4. If a SCEVAddExpr has exactly one pointer operand, the result is a pointer. 5. If a SCEVAddRecExpr's first operand is a pointer, and it has no other pointer operands, the result is a pointer. 6. If every operand of a SCEVMinMaxExpr is a pointer, the result is a pointer. 7. Otherwise, the SCEV expression is invalid. I'm not sure how useful rule 6 is in practice. If we exclude it, we can guarantee that ScalarEvolution::getPointerBase always returns a SCEVUnknown, which might be a helpful property. Anyway, I'll leave that for a followup. This is basically mop-up at this point; all the changes with significant functional effects have landed. Some of the remaining changes could be split off, but I don't see much point. Differential Revision: https://reviews.llvm.org/D105510 |
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| ADT | ||
| Analysis | ||
| AsmParser | ||
| BinaryFormat | ||
| Bitcode | ||
| Bitstream | ||
| CodeGen | ||
| DebugInfo | ||
| Demangle | ||
| ExecutionEngine | ||
| FileCheck | ||
| Frontend | ||
| FuzzMutate | ||
| InterfaceStub | ||
| IR | ||
| LineEditor | ||
| Linker | ||
| MC | ||
| MI | ||
| MIR | ||
| Object | ||
| ObjectYAML | ||
| Option | ||
| Passes | ||
| ProfileData | ||
| Remarks | ||
| Support | ||
| TableGen | ||
| Target | ||
| TextAPI | ||
| tools | ||
| Transforms | ||
| XRay | ||
| CMakeLists.txt | ||
| unittest.cfg.in | ||