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nir: Add atomic operations on variables

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This allows us to first generate atomic operations for shared
variables using these opcodes, and then later we can lower those to
the shared atomics intrinsics with nir_lower_io.

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Jordan Justen 2016-01-18 09:53:44 -08:00
parent 3c807607df
commit 683c359c54
1 changed files with 27 additions and 0 deletions
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27
src/compiler/nir/nir_intrinsics.h
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@ -175,6 +175,33 @@ INTRINSIC(image_size, 0, ARR(), true, 4, 1, 0, xx, xx, xx,
INTRINSIC(image_samples, 0, ARR(), true, 1, 1, 0, xx, xx, xx,
NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER)
/*
* variable atomic intrinsics
*
* All of these variable atomic memory operations read a value from memory,
* compute a new value using one of the operations below, write the new value
* to memory, and return the original value read.
*
* All operations take 1 source except CompSwap that takes 2. These sources
* represent:
*
* 0: The data parameter to the atomic function (i.e. the value to add
* in shared_atomic_add, etc).
* 1: For CompSwap only: the second data parameter.
*
* All operations take 1 variable deref.
*/
INTRINSIC(var_atomic_add, 1, ARR(1), true, 1, 1, 0, xx, xx, xx, 0)
INTRINSIC(var_atomic_imin, 1, ARR(1), true, 1, 1, 0, xx, xx, xx, 0)
INTRINSIC(var_atomic_umin, 1, ARR(1), true, 1, 1, 0, xx, xx, xx, 0)
INTRINSIC(var_atomic_imax, 1, ARR(1), true, 1, 1, 0, xx, xx, xx, 0)
INTRINSIC(var_atomic_umax, 1, ARR(1), true, 1, 1, 0, xx, xx, xx, 0)
INTRINSIC(var_atomic_and, 1, ARR(1), true, 1, 1, 0, xx, xx, xx, 0)
INTRINSIC(var_atomic_or, 1, ARR(1), true, 1, 1, 0, xx, xx, xx, 0)
INTRINSIC(var_atomic_xor, 1, ARR(1), true, 1, 1, 0, xx, xx, xx, 0)
INTRINSIC(var_atomic_exchange, 1, ARR(1), true, 1, 1, 0, xx, xx, xx, 0)
INTRINSIC(var_atomic_comp_swap, 2, ARR(1, 1), true, 1, 1, 0, xx, xx, xx, 0)
/*
* SSBO atomic intrinsics
*