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b48c8c49d5
SGPRs are written by instructions that sometimes will ignore control flow,
which means if you have code like:
if (VGPR0) {
SGPR0 = S_MOV_B32 0
} else {
SGPR0 = S_MOV_B32 1
}
The value of SGPR0 will 1 no matter what the condition is.
In order to deal with this situation correctly, we need to view the
program as if it were a single basic block when we calculate the
live ranges for the SGPRs. They way we actually update the live
range is by iterating over all of the segments in each LiveRange
object and setting the end of each segment equal to the start of
the next segment. So a live range like:
[3888r,9312r:0)[10032B,10384B:0) 0@3888r
will become:
[3888r,10032B:0)[10032B,10384B:0) 0@3888r
This change will allow us to use SALU instructions within branches.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212215 91177308-0d34-0410-b5e6-96231b3b80d8
122 lines
3.8 KiB
C++
122 lines
3.8 KiB
C++
//===-- AMDGPU.h - MachineFunction passes hw codegen --------------*- C++ -*-=//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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/// \file
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//===----------------------------------------------------------------------===//
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#ifndef AMDGPU_H
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#define AMDGPU_H
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#include "llvm/Support/TargetRegistry.h"
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#include "llvm/Target/TargetMachine.h"
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namespace llvm {
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class AMDGPUInstrPrinter;
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class AMDGPUSubtarget;
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class AMDGPUTargetMachine;
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class FunctionPass;
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class MCAsmInfo;
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class raw_ostream;
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class Target;
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class TargetMachine;
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// R600 Passes
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FunctionPass *createR600VectorRegMerger(TargetMachine &tm);
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FunctionPass *createR600TextureIntrinsicsReplacer();
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FunctionPass *createR600ExpandSpecialInstrsPass(TargetMachine &tm);
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FunctionPass *createR600EmitClauseMarkers();
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FunctionPass *createR600ClauseMergePass(TargetMachine &tm);
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FunctionPass *createR600Packetizer(TargetMachine &tm);
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FunctionPass *createR600ControlFlowFinalizer(TargetMachine &tm);
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FunctionPass *createAMDGPUCFGStructurizerPass();
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// SI Passes
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FunctionPass *createSITypeRewriter();
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FunctionPass *createSIAnnotateControlFlowPass();
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FunctionPass *createSILowerI1CopiesPass();
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FunctionPass *createSILowerControlFlowPass(TargetMachine &tm);
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FunctionPass *createSIFixSGPRCopiesPass(TargetMachine &tm);
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FunctionPass *createSIFixSGPRLiveRangesPass();
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FunctionPass *createSICodeEmitterPass(formatted_raw_ostream &OS);
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FunctionPass *createSIInsertWaits(TargetMachine &tm);
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void initializeSILowerI1CopiesPass(PassRegistry &);
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extern char &SILowerI1CopiesID;
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// Passes common to R600 and SI
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FunctionPass *createAMDGPUPromoteAlloca(const AMDGPUSubtarget &ST);
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Pass *createAMDGPUStructurizeCFGPass();
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FunctionPass *createAMDGPUISelDag(TargetMachine &tm);
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/// \brief Creates an AMDGPU-specific Target Transformation Info pass.
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ImmutablePass *
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createAMDGPUTargetTransformInfoPass(const AMDGPUTargetMachine *TM);
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void initializeSIFixSGPRLiveRangesPass(PassRegistry&);
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extern char &SIFixSGPRLiveRangesID;
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extern Target TheAMDGPUTarget;
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} // End namespace llvm
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namespace ShaderType {
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enum Type {
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PIXEL = 0,
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VERTEX = 1,
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GEOMETRY = 2,
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COMPUTE = 3
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};
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}
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/// OpenCL uses address spaces to differentiate between
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/// various memory regions on the hardware. On the CPU
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/// all of the address spaces point to the same memory,
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/// however on the GPU, each address space points to
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/// a separate piece of memory that is unique from other
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/// memory locations.
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namespace AMDGPUAS {
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enum AddressSpaces {
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PRIVATE_ADDRESS = 0, ///< Address space for private memory.
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GLOBAL_ADDRESS = 1, ///< Address space for global memory (RAT0, VTX0).
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CONSTANT_ADDRESS = 2, ///< Address space for constant memory
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LOCAL_ADDRESS = 3, ///< Address space for local memory.
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FLAT_ADDRESS = 4, ///< Address space for flat memory.
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REGION_ADDRESS = 5, ///< Address space for region memory.
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PARAM_D_ADDRESS = 6, ///< Address space for direct addressible parameter memory (CONST0)
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PARAM_I_ADDRESS = 7, ///< Address space for indirect addressible parameter memory (VTX1)
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// Do not re-order the CONSTANT_BUFFER_* enums. Several places depend on this
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// order to be able to dynamically index a constant buffer, for example:
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//
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// ConstantBufferAS = CONSTANT_BUFFER_0 + CBIdx
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CONSTANT_BUFFER_0 = 8,
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CONSTANT_BUFFER_1 = 9,
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CONSTANT_BUFFER_2 = 10,
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CONSTANT_BUFFER_3 = 11,
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CONSTANT_BUFFER_4 = 12,
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CONSTANT_BUFFER_5 = 13,
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CONSTANT_BUFFER_6 = 14,
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CONSTANT_BUFFER_7 = 15,
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CONSTANT_BUFFER_8 = 16,
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CONSTANT_BUFFER_9 = 17,
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CONSTANT_BUFFER_10 = 18,
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CONSTANT_BUFFER_11 = 19,
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CONSTANT_BUFFER_12 = 20,
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CONSTANT_BUFFER_13 = 21,
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CONSTANT_BUFFER_14 = 22,
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CONSTANT_BUFFER_15 = 23,
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ADDRESS_NONE = 24, ///< Address space for unknown memory.
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LAST_ADDRESS = ADDRESS_NONE
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};
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} // namespace AMDGPUAS
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#endif // AMDGPU_H
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