From 96c8bc7956d95c7b39fac37382e6b2a99d9fc2f1 Mon Sep 17 00:00:00 2001 From: Sam Elliott Date: Fri, 21 Jun 2019 13:36:09 +0000 Subject: [RISCV] Add RISCV-specific TargetTransformInfo Summary: LLVM Allows Targets to provide information that guides optimisations made to LLVM IR. This is done with callbacks on a TargetTransformInfo object. This patch adds a TargetTransformInfo class for RISC-V. This will allow us to implement RISC-V specific callbacks as they become necessary. This commit also adds the getIntImmCost callbacks, and tests them with a simple constant hoisting test. Our immediate costs are on the conservative side, for the moment, but we prevent hoisting in most circumstances anyway. Previous review was on D63007 Reviewers: asb, luismarques Reviewed By: asb Subscribers: ributzka, MaskRay, llvm-commits, Jim, benna, psnobl, jocewei, PkmX, rkruppe, the_o, brucehoult, MartinMosbeck, rogfer01, edward-jones, zzheng, jrtc27, shiva0217, kito-cheng, niosHD, sabuasal, apazos, simoncook, johnrusso, rbar, hiraditya, mgorny Tags: #llvm Differential Revision: https://reviews.llvm.org/D63433 llvm-svn: 364046 --- llvm/lib/Target/RISCV/RISCVTargetMachine.cpp | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'llvm/lib/Target/RISCV/RISCVTargetMachine.cpp') diff --git a/llvm/lib/Target/RISCV/RISCVTargetMachine.cpp b/llvm/lib/Target/RISCV/RISCVTargetMachine.cpp index d539dbeef23..f4e6ed9f628 100644 --- a/llvm/lib/Target/RISCV/RISCVTargetMachine.cpp +++ b/llvm/lib/Target/RISCV/RISCVTargetMachine.cpp @@ -10,11 +10,13 @@ // //===----------------------------------------------------------------------===// -#include "RISCV.h" #include "RISCVTargetMachine.h" +#include "RISCV.h" #include "RISCVTargetObjectFile.h" +#include "RISCVTargetTransformInfo.h" #include "TargetInfo/RISCVTargetInfo.h" #include "llvm/ADT/STLExtras.h" +#include "llvm/Analysis/TargetTransformInfo.h" #include "llvm/CodeGen/Passes.h" #include "llvm/CodeGen/TargetLoweringObjectFileImpl.h" #include "llvm/CodeGen/TargetPassConfig.h" @@ -61,6 +63,11 @@ RISCVTargetMachine::RISCVTargetMachine(const Target &T, const Triple &TT, initAsmInfo(); } +TargetTransformInfo +RISCVTargetMachine::getTargetTransformInfo(const Function &F) { + return TargetTransformInfo(RISCVTTIImpl(this, F)); +} + namespace { class RISCVPassConfig : public TargetPassConfig { public: -- cgit v1.2.3