[Mesa-dev] [PATCH v5 05/34] nvir: add lowering helper
Pierre Moreau
pierre.morrow at free.fr
Tue Feb 20 21:59:09 UTC 2018
With the variables “dt”, “st” and “std” renamed to match existing code, this
patch is
Reviewed-by: Pierre Moreau <pierre.morrow at free.fr>
On 2018-02-20 — 22:02, Karol Herbst wrote:
> this is mostly usefull for lazy IR converters not wanting to deal with 64 bit
> lowering and other illegal stuff
>
> v5: also handle SAT
>
> Signed-off-by: Karol Herbst <kherbst at redhat.com>
> ---
> src/gallium/drivers/nouveau/Makefile.sources | 2 +
> .../nouveau/codegen/nv50_ir_lowering_helper.cpp | 267 +++++++++++++++++++++
> .../nouveau/codegen/nv50_ir_lowering_helper.h | 53 ++++
> src/gallium/drivers/nouveau/meson.build | 2 +
> 4 files changed, 324 insertions(+)
> create mode 100644 src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_helper.cpp
> create mode 100644 src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_helper.h
>
> diff --git a/src/gallium/drivers/nouveau/Makefile.sources b/src/gallium/drivers/nouveau/Makefile.sources
> index fee5e59522..ec344c6316 100644
> --- a/src/gallium/drivers/nouveau/Makefile.sources
> +++ b/src/gallium/drivers/nouveau/Makefile.sources
> @@ -122,6 +122,8 @@ NV50_CODEGEN_SOURCES := \
> codegen/nv50_ir_graph.h \
> codegen/nv50_ir.h \
> codegen/nv50_ir_inlines.h \
> + codegen/nv50_ir_lowering_helper.cpp \
> + codegen/nv50_ir_lowering_helper.h \
> codegen/nv50_ir_lowering_nv50.cpp \
> codegen/nv50_ir_peephole.cpp \
> codegen/nv50_ir_print.cpp \
> diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_helper.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_helper.cpp
> new file mode 100644
> index 0000000000..680c6d4f38
> --- /dev/null
> +++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_helper.cpp
> @@ -0,0 +1,267 @@
> +/*
> + * Copyright 2018 Red Hat Inc.
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a
> + * copy of this software and associated documentation files (the "Software"),
> + * to deal in the Software without restriction, including without limitation
> + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> + * and/or sell copies of the Software, and to permit persons to whom the
> + * Software is furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice shall be included in
> + * all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
> + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> + * OTHER DEALINGS IN THE SOFTWARE.
> + *
> + * Authors: Karol Herbst <kherbst at redhat.com>
> + */
> +
> +#include "codegen/nv50_ir_lowering_helper.h"
> +
> +namespace nv50_ir {
> +
> +bool
> +LoweringHelper::visit(Instruction *insn)
> +{
> + switch (insn->op) {
> + case OP_ABS:
> + return handleABS(insn);
> + case OP_CVT:
> + return handleCVT(insn);
> + case OP_MAX:
> + case OP_MIN:
> + return handleMAXMIN(insn);
> + case OP_MOV:
> + return handleMOV(insn);
> + case OP_NEG:
> + return handleNEG(insn);
> + case OP_SAT:
> + return handleSAT(insn);
> + case OP_SLCT:
> + return handleSLCT(insn->asCmp());
> + case OP_AND:
> + case OP_OR:
> + case OP_XOR:
> + return handleLogOp(insn);
> + default:
> + return true;
> + }
> +}
> +
> +bool
> +LoweringHelper::handleABS(Instruction *insn)
> +{
> + DataType dt = insn->dType;
> + if (!(dt == TYPE_U64 || dt == TYPE_S64))
> + return true;
> +
> + bld.setPosition(insn, false);
> +
> + Value *neg = bld.getSSA(8);
> + Value *negComp[2], *srcComp[2];
> + Value *lo = bld.getSSA(), *hi = bld.getSSA();
> + bld.mkOp2(OP_SUB, dt, neg, bld.mkImm((uint64_t)0), insn->getSrc(0));
> + bld.mkSplit(negComp, 4, neg);
> + bld.mkSplit(srcComp, 4, insn->getSrc(0));
> + bld.mkCmp(OP_SLCT, CC_LT, TYPE_S32, lo, TYPE_S32, negComp[0], srcComp[0], srcComp[1]);
> + bld.mkCmp(OP_SLCT, CC_LT, TYPE_S32, hi, TYPE_S32, negComp[1], srcComp[1], srcComp[1]);
> + insn->op = OP_MERGE;
> + insn->setSrc(0, lo);
> + insn->setSrc(1, hi);
> +
> + return true;
> +}
> +
> +bool
> +LoweringHelper::handleCVT(Instruction *insn)
> +{
> + DataType dt = insn->dType;
> + DataType st = insn->sType;
> +
> + if (typeSizeof(dt) <= 4 && typeSizeof(st) <= 4)
> + return true;
> +
> + bld.setPosition(insn, false);
> +
> + if ((dt == TYPE_S32 && st == TYPE_S64) ||
> + (dt == TYPE_U32 && st == TYPE_U64)) {
> + Value *src[2];
> + bld.mkSplit(src, 4, insn->getSrc(0));
> + insn->op = OP_MOV;
> + insn->setSrc(0, src[0]);
> + } else if (dt == TYPE_S64 && st == TYPE_S32) {
> + Value *tmp = bld.getSSA();
> + bld.mkOp2(OP_SHR, TYPE_S32, tmp, insn->getSrc(0), bld.loadImm(bld.getSSA(), 31));
> + insn->op = OP_MERGE;
> + insn->setSrc(1, tmp);
> + } else if (dt == TYPE_U64 && st == TYPE_U32) {
> + insn->op = OP_MERGE;
> + insn->setSrc(1, bld.loadImm(bld.getSSA(), 0));
> + }
> +
> + return true;
> +}
> +
> +bool
> +LoweringHelper::handleMAXMIN(Instruction *insn)
> +{
> + DataType dt = insn->dType;
> + if (!(dt == TYPE_U64 || dt == TYPE_S64))
> + return true;
> +
> + DataType sdt = typeOfSize(4, false, isSignedIntType(dt));
> + bld.setPosition(insn, false);
> +
> + Value *flag = bld.getSSA(1, FILE_FLAGS);
> + Value *src0[2];
> + Value *src1[2];
> + Value *def[2];
> +
> + bld.mkSplit(src0, 4, insn->getSrc(0));
> + bld.mkSplit(src1, 4, insn->getSrc(1));
> +
> + def[0] = bld.getSSA();
> + def[1] = bld.getSSA();
> +
> + Instruction *hi = bld.mkOp2(insn->op, sdt, def[1], src0[1], src1[1]);
> + hi->subOp = NV50_IR_SUBOP_MINMAX_HIGH;
> + hi->setFlagsDef(1, flag);
> +
> + Instruction *lo = bld.mkOp2(insn->op, sdt, def[0], src0[0], src1[0]);
> + lo->subOp = NV50_IR_SUBOP_MINMAX_LOW;
> + lo->setFlagsSrc(2, flag);
> +
> + insn->op = OP_MERGE;
> + insn->setSrc(0, def[0]);
> + insn->setSrc(1, def[1]);
> +
> + return true;
> +}
> +
> +bool
> +LoweringHelper::handleMOV(Instruction *insn)
> +{
> + DataType dt = insn->dType;
> +
> + if (typeSizeof(dt) != 8)
> + return true;
> +
> + Storage ® = insn->getSrc(0)->reg;
> +
> + if (reg.file != FILE_IMMEDIATE)
> + return true;
> +
> + bld.setPosition(insn, false);
> +
> + Value *hi = bld.getSSA();
> + Value *lo = bld.getSSA();
> +
> + bld.loadImm(lo, (uint32_t)(reg.data.u64 & 0xffffffff));
> + bld.loadImm(hi, (uint32_t)(reg.data.u64 >> 32));
> +
> + insn->op = OP_MERGE;
> + insn->setSrc(0, lo);
> + insn->setSrc(1, hi);
> +
> + return true;
> +}
> +
> +bool
> +LoweringHelper::handleNEG(Instruction *insn)
> +{
> + if (typeSizeof(insn->dType) != 8 || isFloatType(insn->dType))
> + return true;
> +
> + bld.setPosition(insn, false);
> +
> + insn->op = OP_SUB;
> + insn->setSrc(1, insn->getSrc(0));
> + insn->setSrc(0, bld.loadImm(bld.getSSA(8), 0));
> + return true;
> +}
> +
> +bool
> +LoweringHelper::handleSAT(Instruction *insn)
> +{
> + DataType dt = insn->dType;
> +
> + if (typeSizeof(dt) != 8 || !isFloatType(dt))
> + return true;
> +
> + bld.setPosition(insn, false);
> +
> + Value *tmp = bld.mkOp2v(OP_MAX, dt, bld.getSSA(8), insn->getSrc(0), bld.loadImm(bld.getSSA(8), 0.0));
> + insn->op = OP_MIN;
> + insn->setSrc(0, tmp);
> + insn->setSrc(1, bld.loadImm(bld.getSSA(8), 1.0));
> + return true;
> +}
> +
> +bool
> +LoweringHelper::handleSLCT(CmpInstruction *insn)
> +{
> + DataType dt = insn->dType;
> + DataType st = insn->sType;
> +
> + if (typeSizeof(dt) != 8 || typeSizeof(st) == 8)
> + return true;
> +
> + CondCode cc = insn->getCondition();
> + DataType sdt = typeOfSize(4, isFloatType(dt), isSignedIntType(dt));
> + bld.setPosition(insn, false);
> +
> + Value *src0[2];
> + Value *src1[2];
> + Value *def[2];
> +
> + bld.mkSplit(src0, 4, insn->getSrc(0));
> + bld.mkSplit(src1, 4, insn->getSrc(1));
> +
> + def[0] = bld.getSSA();
> + def[1] = bld.getSSA();
> +
> + bld.mkCmp(OP_SLCT, cc, sdt, def[0], st, src0[0], src1[0], insn->getSrc(2));
> + bld.mkCmp(OP_SLCT, cc, sdt, def[1], st, src0[1], src1[1], insn->getSrc(2));
> +
> + insn->op = OP_MERGE;
> + insn->setSrc(0, def[0]);
> + insn->setSrc(1, def[1]);
> + insn->setSrc(2, nullptr);
> +
> + return true;
> +}
> +
> +bool
> +LoweringHelper::handleLogOp(Instruction *insn)
> +{
> + DataType dt = insn->dType;
> + DataType sdt = typeOfSize(4, isFloatType(dt), isSignedIntType(dt));
> +
> + if (typeSizeof(dt) != 8)
> + return true;
> +
> + bld.setPosition(insn, false);
> +
> + Value *src0[2];
> + Value *src1[2];
> + Value *def0 = bld.getSSA();
> + Value *def1 = bld.getSSA();
> +
> + bld.mkSplit(src0, 4, insn->getSrc(0));
> + bld.mkSplit(src1, 4, insn->getSrc(1));
> + bld.mkOp2(insn->op, sdt, def0, src0[0], src1[0]);
> + bld.mkOp2(insn->op, sdt, def1, src0[1], src1[1]);
> + insn->op = OP_MERGE;
> + insn->setSrc(0, def0);
> + insn->setSrc(1, def1);
> +
> + return true;
> +}
> +
> +} // namespace nv50_ir
> diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_helper.h b/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_helper.h
> new file mode 100644
> index 0000000000..c59e7cc6f3
> --- /dev/null
> +++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_helper.h
> @@ -0,0 +1,53 @@
> +/*
> + * Copyright 2018 Red Hat Inc.
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a
> + * copy of this software and associated documentation files (the "Software"),
> + * to deal in the Software without restriction, including without limitation
> + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> + * and/or sell copies of the Software, and to permit persons to whom the
> + * Software is furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice shall be included in
> + * all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
> + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> + * OTHER DEALINGS IN THE SOFTWARE.
> + *
> + * Authors: Karol Herbst <kherbst at redhat.com>
> + */
> +
> +#ifndef __NV50_IR_LOWERING_HELPER__
> +#define __NV50_IR_LOWERING_HELPER__
> +
> +#include "codegen/nv50_ir.h"
> +#include "codegen/nv50_ir_build_util.h"
> +
> +namespace nv50_ir {
> +
> +class LoweringHelper : public Pass
> +{
> +private:
> + virtual bool visit(Instruction *);
> +
> + BuildUtil bld;
> +public:
> + bool handleABS(Instruction *);
> + bool handleCVT(Instruction *);
> + bool handleMAXMIN(Instruction *);
> + bool handleMOV(Instruction *);
> + bool handleNEG(Instruction *);
> + bool handleSAT(Instruction *);
> + bool handleSLCT(CmpInstruction *);
> +
> + bool handleLogOp(Instruction *);
> +};
> +
> +} // namespace nv50_ir
> +
> +#endif // __NV50_IR_LOWERING_HELPER__
> diff --git a/src/gallium/drivers/nouveau/meson.build b/src/gallium/drivers/nouveau/meson.build
> index e4fa46aed6..0c41ff253b 100644
> --- a/src/gallium/drivers/nouveau/meson.build
> +++ b/src/gallium/drivers/nouveau/meson.build
> @@ -136,6 +136,8 @@ files_libnouveau = files(
> 'codegen/nv50_ir_graph.h',
> 'codegen/nv50_ir.h',
> 'codegen/nv50_ir_inlines.h',
> + 'codegen/nv50_ir_lowering_helper.cpp',
> + 'codegen/nv50_ir_lowering_helper.h',
> 'codegen/nv50_ir_lowering_nv50.cpp',
> 'codegen/nv50_ir_peephole.cpp',
> 'codegen/nv50_ir_print.cpp',
> --
> 2.14.3
>
> _______________________________________________
> mesa-dev mailing list
> mesa-dev at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/mesa-dev
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