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[AVR] Changed data_layout #145241

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Merged
merged 1 commit into from
Aug 13, 2025
Merged

[AVR] Changed data_layout #145241

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6 changes: 6 additions & 0 deletions compiler/rustc_codegen_llvm/src/context.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -213,6 +213,12 @@ pub(crate) unsafe fn create_module<'ll>(
target_data_layout = target_data_layout.replace("p8:128:128:128:48", "p8:128:128")
}
}
if llvm_version < (22, 0, 0) {
if sess.target.arch == "avr" {
// LLVM 22.0 updated the default layout on avr: https://github.com/llvm/llvm-project/pull/153010
target_data_layout = target_data_layout.replace("n8:16", "n8")
}
}

// Ensure the data-layout values hardcoded remain the defaults.
{
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2 changes: 1 addition & 1 deletion compiler/rustc_target/src/spec/targets/avr_none.rs
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Expand Up @@ -9,7 +9,7 @@ pub(crate) fn target() -> Target {
host_tools: None,
std: None,
},
data_layout: "e-P1-p:16:8-i8:8-i16:8-i32:8-i64:8-f32:8-f64:8-n8-a:8".into(),
data_layout: "e-P1-p:16:8-i8:8-i16:8-i32:8-i64:8-f32:8-f64:8-n8:16-a:8".into(),
llvm_target: "avr-unknown-unknown".into(),
pointer_width: 16,
options: TargetOptions {
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