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Parallel Thread Execution ISA v5.0|iii
5.1.7.Shared State Space................................................................................ 27
5.1.8.Texture State Space (deprecated).............................................................. 27
5.2. Types.......................................................................................................28
5.2.1.Fundamental Types................................................................................ 28
5.2.2.Restricted Use of Sub-Word Sizes............................................................... 29
5.3.Texture Sampler and Surface Types..................................................................29
5.3.1.Texture and Surface Properties..................................................................30
5.3.2.Sampler Properties.................................................................................31
5.3.3.Channel Data Type and Channel Order Fields.................................................33
5.4. Variables.................................................................................................. 34
5.4.1.Variable Declarations..............................................................................34
5.4.2. Vectors............................................................................................... 34
5.4.3.Array Declarations................................................................................. 35
5.4.4. Initializers........................................................................................... 35
5.4.5. Alignment............................................................................................37
5.4.6.Parameterized Variable Names.................................................................. 37
5.4.7.Variable Attributes.................................................................................37
5.4.8.Variable Attribute Directive: .attribute........................................................ 38
Chapter6.Instruction Operands............................................................................ 39
6.1.Operand Type Information............................................................................. 39
6.2.Source Operands.........................................................................................39
6.3.Destination Operands................................................................................... 40
6.4.Using Addresses, Arrays, and Vectors................................................................40
6.4.1.Addresses as Operands............................................................................40
6.4.2.Arrays as Operands................................................................................ 40
6.4.3.Vectors as Operands...............................................................................41
6.4.4.Labels and Function Names as Operands...................................................... 41
6.5.Type Conversion......................................................................................... 41
6.5.1.Scalar Conversions................................................................................. 42
6.5.2.Rounding Modifiers.................................................................................42
6.6. Operand Costs........................................................................................... 43
Chapter7.Abstracting the ABI.............................................................................. 44
7.1.Function Declarations and Definitions............................................................... 44
7.1.1.Changes from PTX ISA Version 1.x.............................................................. 47
7.2.Variadic Functions.......................................................................................47
7.3. Alloca...................................................................................................... 48
Chapter8.Instruction Set.................................................................................... 50
8.1.Format and Semantics of Instruction Descriptions.................................................50
8.2.PTX Instructions......................................................................................... 50
8.3.Predicated Execution................................................................................... 51
8.3.1. Comparisons.........................................................................................51
8.3.1.1.Integer and Bit-Size Comparisons.......................................................... 51
8.3.1.2.Floating Point Comparisons................................................................. 52
