Craig Topper 81ae9f18a4 [RISCV] Make scalable vector FMA commutable for register allocation. ... This adds support for commuting operands and converting between vfmadd and vfmacc to avoid register copies. To avoid messing up intrinsic behavior, I've added new pseudo instructions that have the isCommutable flag set. These pseudos also force a tail agnostic policy. The intrinsic version still use the tail undisturbed policy. For best results it looks like we need to start with fmadd and only pick fmacc if its beneficial. MachineCSE commutes without contraining the operands and then commutes back if it didn't help with CSE. So I've made sure that when the operand choice isn't constrained, we will keep fmadd for MachineCSE and when it does the second commute, we get back the original instruction. Reviewed By: frasercrmck Differential Revision: https://reviews.llvm.org/D95800		2021-02-08 10:05:33 -08:00
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CMakeLists.txt	[RISCV] Merge Utils library into MCTargetDesc	2021-01-14 11:47:30 -08:00
RISCVAsmBackend.cpp
RISCVAsmBackend.h	[RISCV] Merge Utils library into MCTargetDesc	2021-01-14 11:47:30 -08:00
RISCVBaseInfo.cpp	[RISCV] Move RISCVVPseudosTable from RISCVBaseInfo.h to RISCVInstrInfo.h. NFC	2021-01-27 13:38:26 -08:00
RISCVBaseInfo.h	[RISCV] Make scalable vector FMA commutable for register allocation.	2021-02-08 10:05:33 -08:00
RISCVELFObjectWriter.cpp
RISCVELFStreamer.cpp	[RISCV] Merge Utils library into MCTargetDesc	2021-01-14 11:47:30 -08:00
RISCVELFStreamer.h
RISCVFixupKinds.h
RISCVInstPrinter.cpp	[llvm] Remove redundant return and continue statements (NFC)	2021-01-14 20:30:34 -08:00
RISCVInstPrinter.h	[RISCV] Remove unused method RISCVInstPrinter::printSImm5Plus1. NFC	2021-01-04 12:21:35 -08:00
RISCVMatInt.cpp	[RISCV] Merge Utils library into MCTargetDesc	2021-01-14 11:47:30 -08:00
RISCVMatInt.h	[RISCV] Merge Utils library into MCTargetDesc	2021-01-14 11:47:30 -08:00
RISCVMCAsmInfo.cpp
RISCVMCAsmInfo.h
RISCVMCCodeEmitter.cpp	[RISCV] Merge Utils library into MCTargetDesc	2021-01-14 11:47:30 -08:00
RISCVMCExpr.cpp	[RISCV] Don't include CodeGen layer files in MC layer	2020-11-12 07:45:38 -08:00
RISCVMCExpr.h
RISCVMCTargetDesc.cpp	[RISCV] Merge Utils library into MCTargetDesc	2021-01-14 11:47:30 -08:00
RISCVMCTargetDesc.h
RISCVTargetStreamer.cpp	[RISCV] Update the version number to v0.10 for vector.	2021-01-30 07:20:05 +08:00
RISCVTargetStreamer.h	[llvm] Forward-declare formatted_raw_ostream (NFC)	2021-01-28 22:21:13 -08:00