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llvm: Match new LLVM 128-bit integer alignment on sparc

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LLVM continues to align more 128-bit integers to 128-bits in the data
layout rather than relying on the high level language to do it. Update
SPARC target files to match and add a backcompat replacement for current
LLVMs.

See llvm/llvm-project#106951 for details
This commit is contained in:
Matthew Maurer 2024-10-31 20:35:24 +00:00
parent a0d98ff0e5
commit 9caced7bad
7 changed files with 11 additions and 6 deletions
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5
compiler/rustc_codegen_llvm/src/context.rs
View File

@ -148,6 +148,11 @@ pub(crate) unsafe fn create_module<'ll>(
target_data_layout =
target_data_layout.replace("-p270:32:32-p271:32:32-p272:64:64", "");
}
if sess.target.arch.starts_with("sparc") {
// LLVM 20 updates the sparc layout to correctly align 128 bit integers to 128 bit.
// See https://github.com/llvm/llvm-project/pull/106951
target_data_layout = target_data_layout.replace("-i128:128", "");
}
}
// Ensure the data-layout values hardcoded remain the defaults.

2
compiler/rustc_target/src/spec/targets/sparc64_unknown_linux_gnu.rs
View File

@ -16,7 +16,7 @@ pub(crate) fn target() -> Target {
std: Some(true),
},
pointer_width: 64,
data_layout: "E-m:e-i64:64-n32:64-S128".into(),
data_layout: "E-m:e-i64:64-i128:128-n32:64-S128".into(),
arch: "sparc64".into(),
options: base,
}

2
compiler/rustc_target/src/spec/targets/sparc64_unknown_netbsd.rs
View File

@ -16,7 +16,7 @@ pub(crate) fn target() -> Target {
std: Some(true),
},
pointer_width: 64,
data_layout: "E-m:e-i64:64-n32:64-S128".into(),
data_layout: "E-m:e-i64:64-i128:128-n32:64-S128".into(),
arch: "sparc64".into(),
options: TargetOptions { endian: Endian::Big, mcount: "__mcount".into(), ..base },
}

2
compiler/rustc_target/src/spec/targets/sparc64_unknown_openbsd.rs
View File

@ -17,7 +17,7 @@ pub(crate) fn target() -> Target {
std: Some(true),
},
pointer_width: 64,
data_layout: "E-m:e-i64:64-n32:64-S128".into(),
data_layout: "E-m:e-i64:64-i128:128-n32:64-S128".into(),
arch: "sparc64".into(),
options: base,
}

2
compiler/rustc_target/src/spec/targets/sparc_unknown_linux_gnu.rs
View File

@ -11,7 +11,7 @@ pub(crate) fn target() -> Target {
std: Some(true),
},
pointer_width: 32,
data_layout: "E-m:e-p:32:32-i64:64-f128:64-n32-S64".into(),
data_layout: "E-m:e-p:32:32-i64:64-i128:128-f128:64-n32-S64".into(),
arch: "sparc".into(),
options: TargetOptions {
cpu: "v9".into(),

2
compiler/rustc_target/src/spec/targets/sparc_unknown_none_elf.rs
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@ -17,7 +17,7 @@ pub(crate) fn target() -> Target {
..Default::default()
};
Target {
data_layout: "E-m:e-p:32:32-i64:64-f128:64-n32-S64".into(),
data_layout: "E-m:e-p:32:32-i64:64-i128:128-f128:64-n32-S64".into(),
llvm_target: "sparc-unknown-none-elf".into(),
metadata: crate::spec::TargetMetadata {
description: Some("Bare 32-bit SPARC V7+".into()),

2
compiler/rustc_target/src/spec/targets/sparcv9_sun_solaris.rs
View File

@ -19,7 +19,7 @@ pub(crate) fn target() -> Target {
std: Some(true),
},
pointer_width: 64,
data_layout: "E-m:e-i64:64-n32:64-S128".into(),
data_layout: "E-m:e-i64:64-i128:128-n32:64-S128".into(),
// Use "sparc64" instead of "sparcv9" here, since the former is already
// used widely in the source base. If we ever needed ABI
// differentiation from the sparc64, we could, but that would probably