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agx: Describe whether instructions may be reordered

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As per NIR, for the benefit of CSE. It is assumed that instructions that
cannot be eliminated also cannot be reordered.

Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19590>
This commit is contained in:
Alyssa Rosenzweig
2022-11-04 23:26:34 -04:00
committed by Marge Bot
parent 27869f6966
commit 4387d0886d
3 changed files with 8 additions and 5 deletions
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11
src/asahi/compiler/agx_opcodes.py
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@@ -29,7 +29,7 @@ VARIABLE = ~0
class Opcode(object):
def __init__(self, name, dests, srcs, imms, is_float, can_eliminate,
encoding_16, encoding_32):
can_reorder, encoding_16, encoding_32):
self.name = name
self.dests = dests if dests != VARIABLE else 0
self.srcs = srcs if srcs != VARIABLE else 0
@@ -38,6 +38,7 @@ class Opcode(object):
self.imms = imms
self.is_float = is_float
self.can_eliminate = can_eliminate
self.can_reorder = can_reorder
self.encoding_16 = encoding_16
self.encoding_32 = encoding_32
@@ -63,11 +64,11 @@ class Encoding(object):
assert(length_long == length_short + (4 if length_short > 8 else 2))
def op(name, encoding_32, dests = 1, srcs = 0, imms = [], is_float = False,
can_eliminate = True, encoding_16 = None):
can_eliminate = True, can_reorder = True, encoding_16 = None):
encoding_16 = Encoding(encoding_16) if encoding_16 is not None else None
encoding_32 = Encoding(encoding_32) if encoding_32 is not None else None
opcodes[name] = Opcode(name, dests, srcs, imms, is_float, can_eliminate, encoding_16, encoding_32)
opcodes[name] = Opcode(name, dests, srcs, imms, is_float, can_eliminate, can_reorder, encoding_16, encoding_32)
def immediate(name, ctype = "uint32_t"):
imm = Immediate(name, ctype)
@@ -222,7 +223,7 @@ op("texture_load",
# sources are base, index
op("device_load",
encoding_32 = (0x05, 0x7F, 6, 8),
srcs = 2, imms = [FORMAT, MASK, SCOREBOARD])
srcs = 2, imms = [FORMAT, MASK, SCOREBOARD], can_reorder = False)
# sources are value, index
# TODO: Consider permitting the short form
@@ -238,7 +239,7 @@ op("get_sr", (0x72, 0x7F | L, 4, _), dests = 1, imms = [SR])
op("sample_mask", (0x7fc1, 0xffff, 6, _), dests = 0, srcs = 1, can_eliminate = False)
# Essentially same encoding
op("ld_tile", (0x49, 0x7F, 8, _), dests = 1, srcs = 0, imms = [FORMAT, MASK])
op("ld_tile", (0x49, 0x7F, 8, _), dests = 1, srcs = 0, imms = [FORMAT, MASK], can_reorder = False)
op("st_tile", (0x09, 0x7F, 8, _), dests = 0, srcs = 1,
can_eliminate = False, imms = [FORMAT, MASK])