| Issue |
165473
|
| Summary |
[DirectX] DXIL array flattener is incorrectly transforming GEPs
|
| Labels |
backend:DirectX
|
| Assignees |
Icohedron
|
| Reporter |
Icohedron
|
GEPs are incorrectly transformed in some cases by the DXIL array flattener pass.
https://godbolt.org/z/v5G5Ka9vz
```llvm
define ptr @CSMain(i32 %i) {
entry:
%arr = alloca [8 x [4 x float]], align 4
%gep = getelementptr inbounds nuw [8 x [4 x float]], ptr %arr, i32 %i
ret ptr %gep
}
```
Results in an incorrectly-transformed GEP
```llvm
define ptr @CSMain(i32 %i) {
entry:
%arr.1dim = alloca [32 x float], align 4
%0 = mul i32 %i, 32
%1 = add i32 0, %0
%gep1 = getelementptr inbounds nuw [32 x float], ptr %arr.1dim, i32 0, i32 %1
ret ptr %gep1
}
```
![]()
_______________________________________________
llvm-bugs mailing list
[email protected]
https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bugs
