Implement selp instruction

ptx/src/ast.rs

@@ -201,6 +201,20 @@ sub_enum!(LdStScalarType {
     F64,
 });
 
+sub_enum!(SelpType {
+    B16,
+    B32,
+    B64,
+    U16,
+    U32,
+    U64,
+    S16,
+    S32,
+    S64,
+    F32,
+    F64,
+});
+
 pub trait UnwrapWithVec<E, To> {
     fn unwrap_with(self, errs: &mut Vec<E>) -> To;
 }
@@ -512,6 +526,7 @@ pub enum Instruction<P: ArgParams> {
     Max(MinMaxDetails, Arg3<P>),
     Rcp(RcpDetails, Arg2<P>),
     And(OrAndType, Arg3<P>),
+    Selp(SelpType, Arg4<P>),
 }
 
 #[derive(Copy, Clone)]

ptx/src/ptx.lalrpop

@@ -142,6 +142,7 @@ match {
     "or",
     "rcp",
     "ret",
+    "selp",
     "setp",
     "shl",
     "shr",
@@ -176,6 +177,7 @@ ExtendedID : &'input str = {
     "or",
     "rcp",
     "ret",
+    "selp",
     "setp",
     "shl",
     "shr",
@@ -614,7 +616,8 @@ Instruction: ast::Instruction<ast::ParsedArgParams<'input>> = {
     InstSub,
     InstMin,
     InstMax,
-    InstRcp
+    InstRcp,
+    InstSelp
 };
 
 // https://docs.nvidia.com/cuda/parallel-thread-execution/index.html#data-movement-and-conversion-instructions-ld
@@ -1271,6 +1274,25 @@ MinMaxDetails: ast::MinMaxDetails = {
     )
 }
 
+// https://docs.nvidia.com/cuda/parallel-thread-execution/index.html#comparison-and-selection-instructions-selp
+InstSelp: ast::Instruction<ast::ParsedArgParams<'input>> = {
+    "selp" <t:SelpType> <a:Arg4> => ast::Instruction::Selp(t, a),
+};
+
+SelpType: ast::SelpType = {
+    ".b16" => ast::SelpType::B16,
+    ".b32" => ast::SelpType::B32,
+    ".b64" => ast::SelpType::B64,
+    ".u16" => ast::SelpType::U16,
+    ".u32" => ast::SelpType::U32,
+    ".u64" => ast::SelpType::U64,
+    ".s16" => ast::SelpType::S16,
+    ".s32" => ast::SelpType::S32,
+    ".s64" => ast::SelpType::S64,
+    ".f32" => ast::SelpType::F32,
+    ".f64" => ast::SelpType::F64,
+};
+
 ArithDetails: ast::ArithDetails = {
     <t:UIntType> => ast::ArithDetails::Unsigned(t),
     <t:SIntType> => ast::ArithDetails::Signed(ast::ArithSInt {

ptx/src/test/spirv_run/mod.rs

@@ -90,6 +90,7 @@ test_ptx!(mul_non_ftz, [0b1_00000000_10000000000000000000000u32, 0x3f000000u32],
 test_ptx!(constant_f32, [10f32], [5f32]);
 test_ptx!(constant_negative, [-101i32], [101i32]);
 test_ptx!(and, [6u32, 3u32], [2u32]);
+test_ptx!(selp, [100u16, 200u16], [200u16]);
 
 struct DisplayError<T: Debug> {
     err: T,

ptx/src/test/spirv_run/selp.ptx

@@ -0,0 +1,23 @@
+.version 6.5
+.target sm_30
+.address_size 64
+
+.visible .entry selp(
+	.param .u64 input,
+	.param .u64 output
+)
+{
+	.reg .u64 	    in_addr;
+    .reg .u64 	    out_addr;
+    .reg .u16 	    temp1;
+    .reg .u16 	    temp2;
+
+	ld.param.u64 	in_addr, [input];
+    ld.param.u64 	out_addr, [output];
+
+    ld.u16          temp1, [in_addr];
+    ld.u16          temp2, [in_addr + 2];
+    selp.u16   		temp1, temp1, temp2, 0;
+    st.u16          [out_addr], temp1;
+	ret;
+}

ptx/src/test/spirv_run/selp.spvtxt

@@ -0,0 +1,65 @@
+; SPIR-V
+; Version: 1.3
+; Generator: rspirv
+; Bound: 40
+OpCapability GenericPointer
+OpCapability Linkage
+OpCapability Addresses
+OpCapability Kernel
+OpCapability Int8
+OpCapability Int16
+OpCapability Int64
+OpCapability Float16
+OpCapability Float64
+OpCapability FunctionFloatControlINTEL
+OpExtension "SPV_INTEL_float_controls2"
+%31 = OpExtInstImport "OpenCL.std"
+OpMemoryModel Physical64 OpenCL
+OpEntryPoint Kernel %1 "selp"
+%32 = OpTypeVoid
+%33 = OpTypeInt 64 0
+%34 = OpTypeFunction %32 %33 %33
+%35 = OpTypePointer Function %33
+%36 = OpTypeInt 16 0
+%37 = OpTypePointer Function %36
+%38 = OpTypePointer Generic %36
+%23 = OpConstant  %33  2
+%39 = OpTypeBool
+%25 = OpConstantFalse  %39 
+%1 = OpFunction  %32  None %34
+%8 = OpFunctionParameter  %33 
+%9 = OpFunctionParameter  %33 
+%29 = OpLabel
+%2 = OpVariable  %35  Function
+%3 = OpVariable  %35  Function
+%4 = OpVariable  %35  Function
+%5 = OpVariable  %35  Function
+%6 = OpVariable  %37  Function
+%7 = OpVariable  %37  Function
+OpStore %2 %8
+OpStore %3 %9
+%11 = OpLoad  %33  %2
+%10 = OpCopyObject  %33  %11
+OpStore %4 %10
+%13 = OpLoad  %33  %3
+%12 = OpCopyObject  %33  %13
+OpStore %5 %12
+%15 = OpLoad  %33  %4
+%26 = OpConvertUToPtr  %38  %15
+%14 = OpLoad  %36  %26
+OpStore %6 %14
+%17 = OpLoad  %33  %4
+%24 = OpIAdd  %33  %17 %23
+%27 = OpConvertUToPtr  %38  %24
+%16 = OpLoad  %36  %27
+OpStore %7 %16
+%19 = OpLoad  %36  %6
+%20 = OpLoad  %36  %7
+%18 = OpSelect  %36  %25 %20 %20
+OpStore %6 %18
+%21 = OpLoad  %33  %5
+%22 = OpLoad  %36  %6
+%28 = OpConvertUToPtr  %38  %21
+OpStore %28 %22
+OpReturn
+OpFunctionEnd

ptx/src/translate.rs

@@ -1266,6 +1266,9 @@ fn convert_to_typed_statements(
                 ast::Instruction::And(d, a) => {
                     result.push(Statement::Instruction(ast::Instruction::And(d, a.cast())))
                 }
+                ast::Instruction::Selp(d, a) => {
+                    result.push(Statement::Instruction(ast::Instruction::Selp(d, a.cast())))
+                }
             },
             Statement::Label(i) => result.push(Statement::Label(i)),
             Statement::Variable(v) => result.push(Statement::Variable(v)),
@@ -2159,6 +2162,22 @@ fn emit_function_body_ops(
                     (ast::ScalarType::F64, ast::ImmediateValue::F64(value)) => {
                         builder.constant_f64(typ_id, Some(cnst.dst), value);
                     }
+                    (ast::ScalarType::Pred, ast::ImmediateValue::U64(value)) => {
+                        let bool_type = map.get_or_add_scalar(builder, ast::ScalarType::Pred);
+                        if value == 0 {
+                            builder.constant_false(bool_type, Some(cnst.dst));
+                        } else {
+                            builder.constant_true(bool_type, Some(cnst.dst));
+                        }
+                    }
+                    (ast::ScalarType::Pred, ast::ImmediateValue::S64(value)) => {
+                        let bool_type = map.get_or_add_scalar(builder, ast::ScalarType::Pred);
+                        if value == 0 {
+                            builder.constant_false(bool_type, Some(cnst.dst));
+                        } else {
+                            builder.constant_true(bool_type, Some(cnst.dst));
+                        }
+                    }
                     _ => return Err(TranslateError::MismatchedType),
                 }
             }
@@ -2362,6 +2381,10 @@ fn emit_function_body_ops(
                         builder.bitwise_and(result_type, Some(a.dst), a.src1, a.src2)?;
                     }
                 }
+                ast::Instruction::Selp(t, a) => {
+                    let result_type = map.get_or_add_scalar(builder, ast::ScalarType::from(*t));
+                    builder.select(result_type, Some(a.dst), a.src3, a.src2, a.src2)?;
+                }
             },
             Statement::LoadVar(arg, typ) => {
                 let type_id = map.get_or_add(builder, SpirvType::from(typ.clone()));
@@ -4056,6 +4079,7 @@ impl<T: ArgParamsEx> ast::Instruction<T> {
                 t,
                 a.map_non_shift(visitor, &ast::Type::Scalar(t.into()), false)?,
             ),
+            ast::Instruction::Selp(t, a) => ast::Instruction::Selp(t, a.map_selp(visitor, t)?),
         })
     }
 }
@@ -4301,6 +4325,7 @@ impl ast::Instruction<ExpandedArgParams> {
             | ast::Instruction::Max(_, _)
             | ast::Instruction::Rcp(_, _)
             | ast::Instruction::And(_, _)
+            | ast::Instruction::Selp(_, _)
             | ast::Instruction::Mad(_, _) => None,
         }
     }
@@ -4321,6 +4346,7 @@ impl ast::Instruction<ExpandedArgParams> {
             ast::Instruction::Or(_, _) => None,
             ast::Instruction::And(_, _) => None,
             ast::Instruction::Cvta(_, _) => None,
+            ast::Instruction::Selp(_, _) => None,
             ast::Instruction::Sub(ast::ArithDetails::Signed(_), _) => None,
             ast::Instruction::Sub(ast::ArithDetails::Unsigned(_), _) => None,
             ast::Instruction::Add(ast::ArithDetails::Signed(_), _) => None,
@@ -5047,6 +5073,51 @@ impl<T: ArgParamsEx> ast::Arg4<T> {
             src3,
         })
     }
+
+    fn map_selp<U: ArgParamsEx, V: ArgumentMapVisitor<T, U>>(
+        self,
+        visitor: &mut V,
+        t: ast::SelpType,
+    ) -> Result<ast::Arg4<U>, TranslateError> {
+        let dst = visitor.id(
+            ArgumentDescriptor {
+                op: self.dst,
+                is_dst: true,
+                sema: ArgumentSemantics::Default,
+            },
+            Some(&ast::Type::Scalar(t.into())),
+        )?;
+        let src1 = visitor.operand(
+            ArgumentDescriptor {
+                op: self.src1,
+                is_dst: false,
+                sema: ArgumentSemantics::Default,
+            },
+            &ast::Type::Scalar(t.into()),
+        )?;
+        let src2 = visitor.operand(
+            ArgumentDescriptor {
+                op: self.src2,
+                is_dst: false,
+                sema: ArgumentSemantics::Default,
+            },
+            &ast::Type::Scalar(t.into()),
+        )?;
+        let src3 = visitor.operand(
+            ArgumentDescriptor {
+                op: self.src3,
+                is_dst: false,
+                sema: ArgumentSemantics::Default,
+            },
+            &ast::Type::Scalar(ast::ScalarType::Pred),
+        )?;
+        Ok(ast::Arg4 {
+            dst,
+            src1,
+            src2,
+            src3,
+        })
+    }
 }
 
 impl<T: ArgParamsEx> ast::Arg4Setp<T> {