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* [RISCV] Hard float ABI supportAlex Bradbury2019-07-181-0/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The RISC-V hard float calling convention requires the frontend to: * Detect cases where, once "flattened", a struct can be passed using int+fp or fp+fp registers under the hard float ABI and coerce to the appropriate type(s) * Track usage of GPRs and FPRs in order to gate the above, and to determine when signext/zeroext attributes must be added to integer scalars This patch attempts to do this in compliance with the documented ABI, and uses ABIArgInfo::CoerceAndExpand in order to do this. @rjmccall, as author of that code I've tagged you as reviewer for initial feedback on my usage. Note that a previous version of the ABI indicated that when passing an int+fp struct using a GPR+FPR, the int would need to be sign or zero-extended appropriately. GCC never did this and the ABI was changed, which makes life easier as ABIArgInfo::CoerceAndExpand can't currently handle sign/zero-extension attributes. Re-landed after backing out 366450 due to missed hunks. Differential Revision: https://reviews.llvm.org/D60456 llvm-svn: 366480
* Revert "[RISCV] Hard float ABI support" r366450Alex Bradbury2019-07-181-24/+0
| | | | | | The commit was missing a few hunks. Will fix and recommit. llvm-svn: 366454
* [RISCV] Hard float ABI supportAlex Bradbury2019-07-181-0/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | The RISC-V hard float calling convention requires the frontend to: * Detect cases where, once "flattened", a struct can be passed using int+fp or fp+fp registers under the hard float ABI and coerce to the appropriate type(s) * Track usage of GPRs and FPRs in order to gate the above, and to determine when signext/zeroext attributes must be added to integer scalars This patch attempts to do this in compliance with the documented ABI, and uses ABIArgInfo::CoerceAndExpand in order to do this. @rjmccall, as author of that code I've tagged you as reviewer for initial feedback on my usage. Note that a previous version of the ABI indicated that when passing an int+fp struct using a GPR+FPR, the int would need to be sign or zero-extended appropriately. GCC never did this and the ABI was changed, which makes life easier as ABIArgInfo::CoerceAndExpand can't currently handle sign/zero-extension attributes. Differential Revision: https://reviews.llvm.org/D60456 llvm-svn: 366450
* [PATCH] [RISCV] Extend getTargetDefines for RISCVTargetInfoShiva Chen2018-04-051-0/+49
Summary: This patch extend getTargetDefines and implement handleTargetFeatures and hasFeature. and define corresponding marco for those features. Reviewers: asb, apazos, eli.friedman Differential Revision: https://reviews.llvm.org/D44727 Patch by Kito Cheng. llvm-svn: 329278
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