1 //===- AMDGPULegalizerInfo.cpp -----------------------------------*- C++ -*-==//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 /// This file implements the targeting of the Machinelegalizer class for
12 /// \todo This should be generated by TableGen.
13 //===----------------------------------------------------------------------===//
15 #include "AMDGPULegalizerInfo.h"
16 #include "llvm/CodeGen/ValueTypes.h"
17 #include "llvm/IR/Type.h"
18 #include "llvm/IR/DerivedTypes.h"
19 #include "llvm/Target/TargetOpcodes.h"
20 #include "llvm/Support/Debug.h"
24 #ifndef LLVM_BUILD_GLOBAL_ISEL
25 #error "You shouldn't build this"
28 AMDGPULegalizerInfo::AMDGPULegalizerInfo() {
29 using namespace TargetOpcode;
31 const LLT S1= LLT::scalar(1);
32 const LLT S32 = LLT::scalar(32);
33 const LLT S64 = LLT::scalar(64);
34 const LLT P1 = LLT::pointer(1, 64);
35 const LLT P2 = LLT::pointer(2, 64);
37 // FIXME: i1 operands to intrinsics should always be legal, but other i1
38 // values may not be legal. We need to figure out how to distinguish
39 // between these two scenarios.
40 setAction({G_CONSTANT, S1}, Legal);
41 setAction({G_CONSTANT, S32}, Legal);
42 setAction({G_CONSTANT, S64}, Legal);
44 setAction({G_FCONSTANT, S32}, Legal);
46 setAction({G_GEP, P1}, Legal);
47 setAction({G_GEP, P2}, Legal);
48 setAction({G_GEP, 1, S64}, Legal);
50 setAction({G_LOAD, P1}, Legal);
51 setAction({G_LOAD, P2}, Legal);
52 setAction({G_LOAD, S32}, Legal);
53 setAction({G_LOAD, 1, P1}, Legal);
54 setAction({G_LOAD, 1, P2}, Legal);
56 setAction({G_STORE, S32}, Legal);
57 setAction({G_STORE, 1, P1}, Legal);
59 // FIXME: When RegBankSelect inserts copies, it will only create new
60 // registers with scalar types. This means we can end up with
61 // G_LOAD/G_STORE/G_GEP instruction with scalar types for their pointer
62 // operands. In assert builds, the instruction selector will assert
63 // if it sees a generic instruction which isn't legal, so we need to
64 // tell it that scalar types are legal for pointer operands
65 setAction({G_GEP, S64}, Legal);
66 setAction({G_LOAD, 1, S64}, Legal);
67 setAction({G_STORE, 1, S64}, Legal);