| Issue |
135308
|
| Summary |
[Flang] The line displayed in the remark of loop-vectorize is incorrect
|
| Labels |
flang
|
| Assignees |
|
| Reporter |
m-saito-fj
|
When compiling the following code with flang (20.1.0) using `-O3 -fopenmp -Rpass=loop-vectorize`, the line displayed in the remark is incorrect.
The line number of the loop head `do i=1,100` is expected, but the line number of `if (flag==1) then` is output.
```Fortran
subroutine baz()
implicit none
integer :: i,flag
real(8), dimension(100) :: a,b,c
real(8) pm
!$omp simd
do i=1,100
a(i) = b(i) * c(i) + a(i)
flag = a(i) - 30
pm = a(i) + c(i)
if (flag==1) then
b(i) = pm
endif
enddo
endsubroutine
```
The following is the IR (partial) before LoopVectorizePass.
I think the problem is that `!36` does not contain DILocation.
```LLVM
...
omp_loop.inc: ; preds = %omp.simd.region1, %omp_loop.body
%exitcond.not = icmp eq i64 %indvars.iv.next, 100
br i1 %exitcond.not, label %omp_loop.after, label %omp_loop.body, !llvm.loop !36
...
!36 = distinct !{!36, !37, !38}
!37 = !{!"llvm.loop.parallel_accesses", !28}
!38 = !{!"llvm.loop.vectorize.enable", i1 true}
```
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