3 Commits

Author	SHA1	Message	Date
luxufan	a9b9c64fd4	change rvv frame layout ... This patch change the rvv frame layout that proposed in D94465. In patch D94465, In the eliminateFrameIndex function, to eliminate the rvv frame index, create temp virtual register is needed. This virtual register should be scavenged by class RegsiterScavenger. If the machine function has other unused registers, there is no problem. But if there isn't unused registers, we need a emergency spill slot. Because of the emergency spill slot belongs to the scalar local variables field, to access emergency spill slot, we need a temp virtual register again. This makes the compiler report the "Incomplete scavenging after 2nd pass" error. So I change the rvv frame layout as follows: ``` |--------------------------------------| | arguments passed on the stack | |--------------------------------------|<--- fp | callee saved registers | |--------------------------------------| | rvv vector objects(local variables | | and outgoing arguments | |--------------------------------------| | realignment field | |--------------------------------------| | scalar local variable(also contains| | emergency spill slot) | |--------------------------------------|<--- bp | variable-sized local variables | |--------------------------------------|<--- sp ``` Differential Revision: https://reviews.llvm.org/D97111	2021-03-13 16:05:55 +08:00
luxufan	5ddbd1fdbb	[RISCV] Remove redundancy -mattr=+d in test file ... Differential Revision: https://reviews.llvm.org/D97177	2021-03-13 15:17:51 +08:00
Hsiangkai Wang	a3c783dbf2	[RISCV] Spilling for RISC-V V extension. (2nd version) ... Differential Revision: https://reviews.llvm.org/D95148	2021-02-17 14:05:19 +08:00