From 683c359c543f4152150fcc52c7a75b9f6a71d1e4 Mon Sep 17 00:00:00 2001 From: Jordan Justen Date: Mon, 18 Jan 2016 09:53:44 -0800 Subject: [PATCH] nir: Add atomic operations on variables 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 Reviewed-by: Jason Ekstrand --- src/compiler/nir/nir_intrinsics.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/src/compiler/nir/nir_intrinsics.h b/src/compiler/nir/nir_intrinsics.h index 00725562874..3ba1563a59c 100644 --- a/src/compiler/nir/nir_intrinsics.h +++ b/src/compiler/nir/nir_intrinsics.h @@ -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 * -- 2.30.2