Backport EmitC-related commits from upstream (FXML-4370) #146
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Removes linking and registering dialects that are not support any more.
Introduces a SubscriptOp that allows to write IR like
```
func.func @load_store(%arg0: !emitc.array<4x8xf32>, %arg1: !emitc.array<3x5xf32>, %arg2: index, %arg3: index) {
%0 = emitc.subscript %arg0[%arg2, %arg3] : <4x8xf32>, index, index
%1 = emitc.subscript %arg1[%arg2, %arg3] : <3x5xf32>, index, index
emitc.assign %0 : f32 to %1 : f32
return
}
```
which gets translated into the C++ code
```
v1[v2][v3] = v0[v1][v2];
```
To make this happen, this
- adds the SubscriptOp
- allows the subscript op as rhs of emitc.assign
- updates the emitter to print SubscriptOps
The emitter prints emitc.subscript in a delayed fashing to allow it
being used as lvalue.
I.e. while processing
```
%0 = emitc.subscript %arg0[%arg2, %arg3] : <4x8xf32>, index, index
```
it will not emit any text, but record in the `valueMapper` that the name
for `%0` is `v0[v1][v2]`, see `CppEmitter::getSubscriptName`. Only when
that result is then used (here in `emitc.assign`), that name is inserted
into the text.
Emits `2.0e+00f` instead of `(float)2.0e+00`. This helps consumers of the emitted code, especially when there are large numbers of floating point literals, to have a simple AST.
Restrict which integers and floating-point types are valid in EmitC. This should cover the types which are supported in C++ and is aligned with what the emitter currently supports. The checks are implemented as functions and not fully in tablegen to allow them to be re-used by conversions to EmitC.
This converts `memref.alloca`, `memref.load` & `memref.store` to `emitc.variable`, `emitc.subscript` and `emitc.assign`.
mgehre-amd
changed the title
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