Commit Graph

14 Commits

Author SHA1 Message Date
Lei Zhang
f8dbed0455 Change BuildModule() to accept pointer-size pair for binary. 2016-09-20 16:44:24 -04:00
Lei Zhang
2cbb2cce3e Change interface of Pass::Process() to return possible failures. 2016-09-20 16:40:17 -04:00
Lei Zhang
b54686d017 Move functions for building modules outside of the C++ interface. 2016-09-16 14:02:47 -04:00
Lei Zhang
114af21994 Add MessageConsumer to PassManager, Pass, and analysis interfaces.
Also convert some uses of assert() in optimization code to use
SPIRV_ASSERT(), SPIRV_UNIMPLEMENTED(), or SPIRV_UNREACHABLE()
accordingly.
2016-09-16 13:14:57 -04:00
David Neto
9fc8658ef3 Relicense SPIRV-Tools under Apache 2.0
Fixes https://github.com/KhronosGroup/SPIRV-Tools/issues/383

Finalize v2016.4
2016-09-02 10:00:29 -04:00
qining
eb60e2945a Unify constants pass
De-duplicate constants and unifies the uses of constants for a SPIR-V
module. If two constants are defined exactly the same, only one of them
will be kept and all the uses of the removed constant will be redirected
to the kept one.

This pass handles normal constants (defined with
OpConstant{|True|False|Composite}), some spec constants (those defined
with OpSpecConstant{Op|Composite}) and null constants (defined with
OpConstantNull).

There are several cases not handled by this pass:

  1) If there are decorations for the result id of a constant defining
  instruction, that instruction will not be processed. This means the
  instruction won't be used to replace other instructions and other
  instructions won't be used to replace it either.

  2) This pass does not unify null constants (defined with
  OpConstantNull instruction) with their equivalent zero-valued normal
  constants (defined with OpConstant{|False|Composite} with zero as the
  operand values or component values).
2016-09-01 11:46:05 -04:00
qining
380f36eae1 Fold spec constants to normal constants (values fixed)
For the spec constants defined by OpSpecConstantOp and
OpSpecContantComposite, if all of their operands are constants with
determined values (normal constants whose values are fixed), calculate
the correct values of the spec constants and re-define them as normal
constants.

In short, this pass replaces all the spec constants defined by
OpSpecContantOp and OpSpecConstantComposite with normal constants when
possible. So far not all valid operations of OpSpecConstantOp are
supported, we have several constriction here:

1) Only 32-bit integer and boolean (both scalar and vector) are
supported for any arithmetic operations. Integers in other width (like
64-bit) are not supported.
2) OpSConvert, OpFConvert, OpQuantizeToF16, and all the
operations under Kernel capability, are not supported.
3) OpCompositeInsert is not supported.

Note that this pass does not unify normal constants. This means it is
possible to have new generatd constants defining the same values.
2016-08-29 08:58:53 -04:00
David Neto
923a4596b4 Fix typo in spirv-opt help 2016-08-26 16:27:54 -04:00
qining
23266c9b56 Add back the missing msg about --eliminate-dead-const 2016-08-10 19:44:18 -04:00
qining
51a2484b36 Dead constant elimination
A pass to remove dead constants, including both front-end constants and spec
constants.

This pass does not handle dead variables and types.
2016-08-08 17:17:15 -04:00
qining
a24506266b Freeze spec constants to their default values
Add a pass to freeze spec constants to their default values. This pass does
not fold the frozen spec constants and does not handle SpecConstantOp
instructions and SpecConstantComposite instructions.
2016-07-28 15:23:30 -04:00
Lei Zhang
23a3c2f762 DRY file writing code in tools. 2016-06-30 15:56:47 -04:00
Lei Zhang
7fd27e737a DRY file reading code in tools. 2016-06-30 15:56:20 -04:00
Lei Zhang
310bc84cf7 Add the spirv-opt command line tool. 2016-06-30 13:20:40 -04:00