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Auto merge of rust-lang#124813 - maurer:llvm-aarch64-fn32, r=nikic
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Adjust 64-bit ARM data layouts for LLVM update

LLVM has updated data layouts to specify `Fn32` on 64-bit ARM to avoid C++ accidentally underaligning functions when trying to comply with member function ABIs.

This should only affect Rust in cases where we had a similar bug (I don't believe we have one), but our data layout must match to generate code.

As a compatibility adaptatation, if LLVM is not version 19 yet, `Fn32` gets voided from the data layout.

See llvm/llvm-project#90415

`@rustbot` label: +llvm-main
cc `@krasimirgg`
r? `@durin42`
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bors committed May 7, 2024
2 parents 5ae5d13 + 4d397d3 commit d71b3f4
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Showing 41 changed files with 49 additions and 40 deletions.
9 changes: 9 additions & 0 deletions compiler/rustc_codegen_llvm/src/context.rs
Original file line number Diff line number Diff line change
Expand Up @@ -133,6 +133,15 @@ pub unsafe fn create_module<'ll>(
}
}

if llvm_version < (19, 0, 0) {
if sess.target.arch == "aarch64" || sess.target.arch.starts_with("arm64") {
// LLVM 19 sets -Fn32 in its data layout string for 64-bit ARM
// Earlier LLVMs leave this default, so remove it.
// See https://github.com/llvm/llvm-project/pull/90702
target_data_layout = target_data_layout.replace("-Fn32", "");
}
}

// Ensure the data-layout values hardcoded remain the defaults.
{
let tm = crate::back::write::create_informational_target_machine(tcx.sess);
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Expand Up @@ -22,7 +22,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:o-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:o-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: arch.target_arch(),
options: TargetOptions {
mcount: "\u{1}mcount".into(),
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Expand Up @@ -19,7 +19,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:o-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:o-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: arch.target_arch(),
options: TargetOptions {
features: "+neon,+fp-armv8,+apple-a7".into(),
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Expand Up @@ -15,7 +15,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:o-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:o-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: arch.target_arch(),
options: TargetOptions {
features: "+neon,+fp-armv8,+apple-a12".into(),
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Expand Up @@ -19,7 +19,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:o-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:o-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: arch.target_arch(),
options: TargetOptions {
features: "+neon,+fp-armv8,+apple-a7".into(),
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Expand Up @@ -12,7 +12,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:o-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:o-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: arch.target_arch(),
options: TargetOptions {
features: "+neon,+fp-armv8,+apple-a7".into(),
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Expand Up @@ -12,7 +12,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:o-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:o-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: arch.target_arch(),
options: TargetOptions {
features: "+neon,+fp-armv8,+apple-a7".into(),
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Expand Up @@ -15,7 +15,7 @@ pub fn target() -> Target {
std: Some(false),
},
pointer_width: 64,
data_layout: "e-m:o-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:o-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: arch.target_arch(),
options: TargetOptions {
features: "+neon,+fp-armv8,+apple-a16".into(),
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Expand Up @@ -15,7 +15,7 @@ pub fn target() -> Target {
std: Some(false),
},
pointer_width: 64,
data_layout: "e-m:o-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:o-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: arch.target_arch(),
options: TargetOptions {
features: "+neon,+fp-armv8,+apple-a16".into(),
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Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:o-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:o-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "aarch64".into(),
options: TargetOptions {
features: "+v8a,+neon,+fp-armv8,+apple-a7".into(),
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:o-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:o-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: arch.target_arch(),
options: TargetOptions {
features: "+neon,+fp-armv8,+apple-a7".into(),
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Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "E-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128".into(),
data_layout: "E-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "aarch64".into(),
options: TargetOptions {
features: "+v8a,+outline-atomics".into(),
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Original file line number Diff line number Diff line change
Expand Up @@ -14,7 +14,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 32,
data_layout: "E-m:e-p:32:32-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128".into(),
data_layout: "E-m:e-p:32:32-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "aarch64".into(),
options: TargetOptions {
abi: "ilp32".into(),
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Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "E-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128".into(),
data_layout: "E-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "aarch64".into(),
options: TargetOptions {
mcount: "__mcount".into(),
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Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "aarch64".into(),
options: TargetOptions {
linker: Some("aarch64-kmc-elf-gcc".into()),
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Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "aarch64".into(),
options: TargetOptions {
max_atomic_width: Some(128),
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Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "aarch64".into(),
options: TargetOptions {
features: "+v8a".into(),
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Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:w-p:64:64-i32:32-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:w-p:64:64-i32:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "aarch64".into(),
options: base,
}
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Original file line number Diff line number Diff line change
Expand Up @@ -14,7 +14,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:w-p:64:64-i32:32-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:w-p:64:64-i32:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "aarch64".into(),
options: base,
}
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Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "aarch64".into(),
options: TargetOptions {
features: "+v8a".into(),
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "aarch64".into(),
options: TargetOptions {
features: "+v8a".into(),
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,7 @@ pub fn target() -> Target {
},
pointer_width: 64,
arch: "aarch64".into(),
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
options: TargetOptions {
features: "+v8a,+strict-align,+neon,+fp-armv8".into(),
max_atomic_width: Some(128),
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Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "aarch64".into(),
options: base,
}
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "aarch64".into(),
options: TargetOptions {
features: "+v8a,+outline-atomics".into(),
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 32,
data_layout: "e-m:e-p:32:32-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:e-p:32:32-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "aarch64".into(),
options: TargetOptions {
abi: "ilp32".into(),
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "aarch64".into(),
options: TargetOptions { mcount: "\u{1}_mcount".into(), ..base },
}
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Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "aarch64".into(),
options: TargetOptions {
features: "+reserve-x18".into(),
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Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "aarch64".into(),
options: TargetOptions {
features: "+v8a".into(),
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -38,7 +38,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "aarch64".into(),
options: opts,
}
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Original file line number Diff line number Diff line change
Expand Up @@ -32,7 +32,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "aarch64".into(),
options: opts,
}
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Original file line number Diff line number Diff line change
Expand Up @@ -19,7 +19,7 @@ pub fn target() -> Target {
// i128:128 = 128-bit-integer, minimum_alignment=128, preferred_alignment=128
// n32:64 = 32 and 64 are native integer widths; Elements of this set are considered to support most general arithmetic operations efficiently.
// S128 = 128 bits are the natural alignment of the stack in bits.
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "aarch64".into(),
options: TargetOptions {
features: "+v8a".into(),
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "aarch64".into(),
options: TargetOptions {
features: "+v8a".into(),
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "aarch64".into(),
options: base,
}
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "aarch64".into(),
options: base,
}
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -19,7 +19,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:w-p:64:64-i32:32-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:w-p:64:64-i32:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "aarch64".into(),
options: base,
}
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -14,7 +14,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:w-p:64:64-i32:32-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:w-p:64:64-i32:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "aarch64".into(),
options: base,
}
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "aarch64".into(),
options: TargetOptions {
features: "+v8a".into(),
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 32,
data_layout: "e-m:o-p:32:32-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:o-p:32:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "aarch64".into(),
options: TargetOptions {
features: "+v8a,+neon,+fp-armv8,+apple-a7".into(),
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -22,7 +22,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:o-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:o-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: arch.target_arch(),
options: TargetOptions {
mcount: "\u{1}mcount".into(),
Expand Down
2 changes: 1 addition & 1 deletion compiler/rustc_target/src/spec/targets/arm64e_apple_ios.rs
Original file line number Diff line number Diff line change
Expand Up @@ -19,7 +19,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:o-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:o-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: arch.target_arch(),
options: TargetOptions {
features: "+neon,+fp-armv8,+apple-a12,+v8.3a,+pauth".into(),
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -19,7 +19,7 @@ pub fn target() -> Target {
std: None,
},
pointer_width: 64,
data_layout: "e-m:w-p:64:64-i32:32-i64:64-i128:128-n32:64-S128".into(),
data_layout: "e-m:w-p:64:64-i32:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
arch: "arm64ec".into(),
options: base,
}
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