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IADD.X Rd.CC requires some extra logic that is not currently
implemented. Abort when this is hit.
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Signed integer addition overflow might be undefined behavior. It's free
to change operations to UAdd and use unsigned integers to avoid
potential bugs.
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IADD.X takes the carry flag and adds it to the result. This is generally
used to emulate 64-bit operations with 32-bit registers.
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P2R CC takes the state of condition codes and puts them into a register.
We already have this implemented for PR (predicates). This commit
implements CC over that.
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Avoid atomic counters used by shared pointers.
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decode/arithmetic_half: Fix HADD2 and HMUL2 absolute and negation bits
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shader/arithmetic_integer: Fix LEA_IMM encoding
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The encoding for negation and absolute value was wrong.
Extracting is now done manually. Similar instructions having different
encodings is the rule, not the exception. To keep sanity and readability
I preferred to extract the desired bit manually.
This is implemented against nxas:
https://github.com/ReinUsesLisp/nxas/blob/8dbc38995711cc12206aa370145a3a02665fd989/table.h#L68
That is itself tested against nvdisasm (Nvidia's official disassembler).
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The operand order in LEA_IMM was flipped compared to nvdisasm. Fix that
using nxas as reference:
https://github.com/ReinUsesLisp/nxas/blob/8dbc38995711cc12206aa370145a3a02665fd989/table.h#L122
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Only the first element of the returned pair is ever used.
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Some variables aren't used, so we can remove these.
Unfortunately, diagnostics are still reported on structured bindings
even when annotated with [[maybe_unused]], so we need to unpack the
elements that we want to use manually.
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Same behavior, less code.
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We can just specify the initializers.
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CMakeLists: Specify -Wextra on linux builds
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Removes a redundant variable that is already satisfied by the IsFull()
utility function.
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Allows reporting more cases where logic errors may exist, such as
implicit fallthrough cases, etc.
We currently ignore unused parameters, since we currently have many
cases where this is intentional (virtual interfaces).
While we're at it, we can also tidy up any existing code that causes
warnings. This also uncovered a few bugs as well.
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shader/memory: Implement RED.E.ADD and minor changes to ATOM
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Adds another variant of FCMP.
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shader/conversion: Implement I2I sign extension, saturation and selection
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shader/texture: Remove type mismatches management from shader decoder
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shader/video: Partially implement VMNMX
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Implements the common usages for VMNMX. Inputs with a different size
than 32 bits are not supported and sign mismatches aren't supported
either.
VMNMX works as follows:
It grabs Ra and Rb and applies a maximum/minimum on them (this is
defined by .MX), having in mind the input sign. This result can then be
saturated. After the intermediate result is calculated, it applies
another operation on it using Rc. These operations are merges,
accumulations or another min/max pass.
This instruction allows to implement with a more flexible approach GCN's
min3 and max3 instructions (for instance).
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Since commit e22816a5bb we handle type mismatches from the CPU.
We don't need to hack our shader decoder due to game bugs anymore.
Removed in this commit.
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video_core/shader: Add some instruction and S2R encodings
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shader: implement SULD.D bits32/64
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Reimplements I2I adding sign extension, saturation (clamp source value
to the destination), selection and destination sizes that are not 32
bits wide.
It doesn't implement CC yet.
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Co-Authored-By: Rodrigo Locatti <reinuseslisp@airmail.cc>
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removed shader stage.
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Implements a reduction operation. It's an atomic operation that doesn't
return a value.
This commit introduces another primitive because some shading languages
might have a primitive for reduction operations.
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shader_decompiler: Remove FragCoord.w hack and change IPA implementation
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