5bcc611409
This checkin provides the standard set of atomic operations and a memory barrier in the ispc standard library. Both signed and unsigned 32- and 64-bit integer types are supported.
59 lines
2.6 KiB
Plaintext
59 lines
2.6 KiB
Plaintext
=== v1.0.3 === (4 July 2011)
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ispc now has a bulit-in pre-processor (from LLVM's clang compiler).
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(Thanks to Pete Couperus for this patch!) It is therefore no longer
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necessary to use cl.exe for preprocessing on Windows; the MSVC proejct
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files for the examples have been updated accordingly.
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There is another variant of the shuffle() function int the standard
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library: "<type> shuffle(<type> v0, <type> v1, int permute)", where the
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permutation vector indexes over the concatenation of the two vectors
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(e.g. the value 0 corresponds to the first element of v0, the value
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2*programCount-1 corresponds to the last element of v1, etc.)
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ispc now supports the usual range of atomic operations (add, subtract, min,
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max, and, or, and xor) as well as atomic swap and atomic compare and
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exchange. There is also a facility for inserting memory fences. See the
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"Atomic Operations and Memory Fences" section of the user's guide
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(http://ispc.github.com/ispc.html#atomic-operations-and-memory-fences) for
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more information.
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There are now both 'signed' and 'unsigned' variants of the standard library
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functions like packed_load_active() that take references to arrays of
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signed int32s and unsigned int32s respectively. (The
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{load_from,store_to}_{int8,int16}() functions have similarly been augmented
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to have both 'signed' and 'unsigned' variants.)
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In initializer expressions with variable declarations, it is no longer
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legal to initialize arrays and structs with single scalar values that then
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initialize their members; they now must be initialized with initializer
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lists in braces (or initialized after of the initializer with a loop over
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array elements, etc.)
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=== v1.0.2 === (1 July 2011)
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Floating-point hexidecimal constants are now parsed correctly on Windows
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(fixes issue #16).
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SSE2 is now the default target if --cpu=atom is given in the command line
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arguments and another target isn't explicitly specified.
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The standard library now provides broadcast(), rotate(), and shuffle()
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routines for efficient communication between program instances.
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The MSVC solution files to build the examples on Windows now use
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/fpmath:fast when building.
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=== v1.0.1 === (24 June 2011)
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ispc no longer requires that pointers to memory that are passed in to ispc
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have alignment equal to the targets vector width; now alignment just has to
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be the regular element alignment (e.g. 4 bytes for floats, etc.) This
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change also fixed a number of cases where it previously incorrectly
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generated aligned load/store instructions in cases where the address wasn't
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actually aligned (even if the base address passed into ispc code was).
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=== v1.0 === (21 June 2011)
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Initial Release
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