[CIR] CallConvLowering for X86 aggregate #1387
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bcardosolopes
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Feb 24, 2025
clang/lib/CIR/Dialect/Transforms/TargetLowering/LowerFunction.cpp
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lanza
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This deals with some x86 aggregate types for CallConvLowering pass.
Suppose we have a simple struct like this.
```cpp
struct dim3 { int x, y, z; };
```
It can be coerced into
```cpp
struct dim3_ { uint64_t xy; int z; };
```
And for a function that receives it as an argument, OG does the
following transformation for x86:
```cpp
void f(dim3 arg) { /* Before */ }
void f(uint64_t xy, int z) { /* After */ }
```
Now this transformation is implemented in the CallConvLowering pass of
CIR.
terapines-osc-cir
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Sep 2, 2025
This deals with some x86 aggregate types for CallConvLowering pass.
Suppose we have a simple struct like this.
```cpp
struct dim3 { int x, y, z; };
```
It can be coerced into
```cpp
struct dim3_ { uint64_t xy; int z; };
```
And for a function that receives it as an argument, OG does the
following transformation for x86:
```cpp
void f(dim3 arg) { /* Before */ }
void f(uint64_t xy, int z) { /* After */ }
```
Now this transformation is implemented in the CallConvLowering pass of
CIR.
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This deals with some x86 aggregate types for CallConvLowering pass.
Suppose we have a simple struct like this.
It can be coerced into
And for a function that receives it as an argument, OG does the following transformation for x86:
Now this transformation is implemented in the CallConvLowering pass of CIR.