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Merge commit 069ecd0c6e2c from llvm-project (by Fangrui Song): [ARM] Check target feature support for __builtin_arm_crc* `__builtin_arm_crc*` requires the target feature crc which is available on armv8 and above. Calling the fuctions for armv7 leads to a SelectionDAG crash. ``` % clang -c --target=armv7-unknown-linux-gnueabi -c a.c fatal error: error in backend: Cannot select: intrinsic %llvm.arm.crc32b PLEASE submit a bug report to ... ``` Add `TARGET_BUILTIN` and define required features for these builtins to report an error in `CodeGenFunction::checkTargetFeatures`. The problem is quite widespread. I will add `TARGET_BUILTIN` for more builtins later. Fix https://github.com/llvm/llvm-project/issues/57802 Differential Revision: https://reviews.llvm.org/D134127 Merge commit b2d7a0dcf1ff from llvm-project (by Fangrui Song): [AArch64] Check target feature support for __builtin_arm_crc* This is the AArch64 counterpart of D134127. Daniel Kiss will change more `BUILTIN` to `TARGET_BUILTIN`. Fix #57802 Note that programs attempting to use ARM/AArch64 CRC intrinsics, when they are not supported by the targeted CPU, will still receive a regular compilation error (instead of a fatal backend error) similar to: 7zCrc.c:4:10: error: '__builtin_arm_crc32b' needs target feature crc return __builtin_arm_crc32b(a, b); ^ Reported by: Alastair Hogge <agh@riseup.net> PR: 271624 MFC after: 3 days |
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