According to Vulkan spec, the new execution modes affect only
correctly rounded SPIR-V instructions, which includes fadd,
fsub and fmul.
Signed-off-by: Samuel Iglesias Gonsálvez <sigles...@igalia.com>
---
src/compiler/nir/nir_opcodes.py | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/src/compiler/nir/nir_opcodes.py b/src/compiler/nir/nir_opcodes.py
index f8997444c28..7b45d38f460 100644
--- a/src/compiler/nir/nir_opcodes.py
+++ b/src/compiler/nir/nir_opcodes.py
@@ -453,9 +453,15 @@ def binop_convert(name, out_type, in_type, alg_props,
const_expr):
opcode(name, 0, out_type, [0, 0], [in_type, in_type],
False, alg_props, const_expr, "")
+def binop_convert_rounding_mode(name, out_type, in_type, alg_props,
const_expr, rounding_mode):
+ opcode(name, 0, out_type, [0, 0], [in_type, in_type], False, alg_props,
const_expr, rounding_mode)
+
def binop(name, ty, alg_props, const_expr):
binop_convert(name, ty, ty, alg_props, const_expr)
+def binop_rounding_mode(name, ty, alg_props, const_expr, rounding_mode):
+ binop_convert_rounding_mode(name, ty, ty, alg_props, const_expr,
rounding_mode)
+
def binop_compare(name, ty, alg_props, const_expr):
binop_convert(name, tbool1, ty, alg_props, const_expr)
@@ -490,13 +496,24 @@ def binop_reduce(name, output_size, output_type,
src_type, prereduce_expr,
final(reduce_(reduce_(src0, src1), reduce_(src2, src3))), "")
binop("fadd", tfloat, commutative + associative, "src0 + src1")
+binop_rounding_mode("fadd_rtne", tfloat, commutative + associative,
+ "_mesa_roundeven(src0 + src1)", "_rtne")
+binop_rounding_mode("fadd_rtz", tfloat, commutative + associative, "src0 +
src1", "_rtz")
+
binop("iadd", tint, commutative + associative, "src0 + src1")
binop("uadd_sat", tuint, commutative,
"(src0 + src1) < src0 ? UINT64_MAX : (src0 + src1)")
binop("fsub", tfloat, "", "src0 - src1")
+binop_rounding_mode("fsub_rtne", tfloat, "",
+ "_mesa_roundeven(src0 - src1)", "_rtne")
+binop_rounding_mode("fsub_rtz", tfloat, "", "src0 - src1", "_rtz")
binop("isub", tint, "", "src0 - src1")
binop("fmul", tfloat, commutative + associative, "src0 * src1")
+binop_rounding_mode("fmul_rtne", tfloat, commutative + associative,
+ "_mesa_roundeven(src0 * src1)", "_rtne")
+binop_rounding_mode("fmul_rtz", tfloat, commutative + associative, "src0 *
src1", "_rtz")
+
# low 32-bits of signed/unsigned integer multiply
binop("imul", tint, commutative + associative, "src0 * src1")
--
2.19.1
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