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Stop interleaver from expanding the scope of letstmts #7908

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merged 1 commit into from
Oct 20, 2023
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@abadams abadams commented Oct 19, 2023

In the following code:

let a = b in
  X
let a = c in
  Y

If Stmt X successfully had stores interleaved, we were re-nesting it like so:

let a = b in
  X
  let a = c in
    Y

This introduces a shadowed variable 'a', which is illegal at this stage of lowering.

Fixes #7906

Also some drive-by fixes to earlier tests that had debugging code left in.

In the following code:

let a = b in
  X
let a = c in
  Y

If Stmt X successfully had stores interleaved, it was re-nesting it like
so:

let a = b in
  X
  let a = c in
    Y

This introduces a shadowed variable 'a', which is illegal at this stage
of lowering.

Fixes #7906

Also some drive-by fixes to earlier tests that had debugging code left
in.
@abadams abadams merged commit bd1d4df into main Oct 20, 2023
15 of 19 checks passed
ardier pushed a commit to ardier/Halide-mutation that referenced this pull request Mar 3, 2024
In the following code:

let a = b in
  X
let a = c in
  Y

If Stmt X successfully had stores interleaved, it was re-nesting it like
so:

let a = b in
  X
  let a = c in
    Y

This introduces a shadowed variable 'a', which is illegal at this stage
of lowering.

Fixes halide#7906

Also some drive-by fixes to earlier tests that had debugging code left
in.
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duplicate intermediate names generated that cause simpiler to fail
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