[meta-lts-mixins][scarthgap/rust][PATCH 12/35] rust: Fix build with llvm-22

From: Khem Raj <[email protected]>

Backport patch to update data layout for amdgpu

Signed-off-by: Khem Raj <[email protected]>
(adapted from oe-core commit 2f92d8c9d7cb23d990e0fc286451600823cf21b4)
Signed-off-by: Scott Murray <[email protected]>
---
 .../0001-Update-amdgpu-data-layout.patch      | 44 +++++++++++++++++++
 recipes-devtools/rust/rust-source.inc         |  1 +
 2 files changed, 45 insertions(+)
 create mode 100644 recipes-devtools/rust/files/0001-Update-amdgpu-data-layout.patch

diff --git a/recipes-devtools/rust/files/0001-Update-amdgpu-data-layout.patch b/recipes-devtools/rust/files/0001-Update-amdgpu-data-layout.patch
new file mode 100644
index 0000000..1c09cd8
--- /dev/null
+++ b/recipes-devtools/rust/files/0001-Update-amdgpu-data-layout.patch
@@ -0,0 +1,44 @@
+From bf3ac98d6930ba4e258cf33240c2fe7c99d19eae Mon Sep 17 00:00:00 2001
+From: Nikita Popov <[email protected]>
+Date: Tue, 6 Jan 2026 11:51:33 +0100
+Subject: [PATCH] Update amdgpu data layout
+
+This changed in:
+https://github.com/llvm/llvm-project/commit/853760bca6aa7a960b154cef8c61f87271870b8a
+
+Upstream-Status: Backport [https://github.com/rust-lang/rust/commit/bf3ac98d6930ba4e258cf33240c2fe7c99d19eae]
+Signed-off-by: Khem Raj <[email protected]>
+---
+ compiler/rustc_codegen_llvm/src/context.rs                  | 5 +++++
+ compiler/rustc_target/src/spec/targets/amdgcn_amd_amdhsa.rs | 2 +-
+ 2 files changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/compiler/rustc_codegen_llvm/src/context.rs b/compiler/rustc_codegen_llvm/src/context.rs
+index 4b2544b7efd..4328b15c73f 100644
+--- a/compiler/rustc_codegen_llvm/src/context.rs
++++ b/compiler/rustc_codegen_llvm/src/context.rs
+@@ -215,6 +215,11 @@ pub(crate) unsafe fn create_module<'ll>(
+             // LLVM 22 updated the ABI alignment for double on AIX: https://github.com/llvm/llvm-project/pull/144673
+             target_data_layout = target_data_layout.replace("-f64:32:64", "");
+         }
++        if sess.target.arch == Arch::AmdGpu {
++            // LLVM 22 specified ELF mangling in the amdgpu data layout:
++            // https://github.com/llvm/llvm-project/pull/163011
++            target_data_layout = target_data_layout.replace("-m:e", "");
++        }
+     }
+
+     // Ensure the data-layout values hardcoded remain the defaults.
+diff --git a/compiler/rustc_target/src/spec/targets/amdgcn_amd_amdhsa.rs b/compiler/rustc_target/src/spec/targets/amdgcn_amd_amdhsa.rs
+index 828d853ac65..d6a2cfc2aab 100644
+--- a/compiler/rustc_target/src/spec/targets/amdgcn_amd_amdhsa.rs
++++ b/compiler/rustc_target/src/spec/targets/amdgcn_amd_amdhsa.rs
+@@ -5,7 +5,7 @@
+ pub(crate) fn target() -> Target {
+     Target {
+         arch: Arch::AmdGpu,
+-        data_layout: "e-p:64:64-p1:64:64-p2:32:32-p3:32:32-p4:64:64-p5:32:32-p6:32:32-p7:160:256:256:32-p8:128:128:128:48-p9:192:256:256:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5-G1-ni:7:8:9".into(),
++        data_layout: "e-m:e-p:64:64-p1:64:64-p2:32:32-p3:32:32-p4:64:64-p5:32:32-p6:32:32-p7:160:256:256:32-p8:128:128:128:48-p9:192:256:256:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5-G1-ni:7:8:9".into(),
+         llvm_target: "amdgcn-amd-amdhsa".into(),
+         metadata: TargetMetadata {
+             description: Some("AMD GPU".into()),
diff --git a/recipes-devtools/rust/rust-source.inc b/recipes-devtools/rust/rust-source.inc
index b9077c3..c3e2ca7 100644
--- a/recipes-devtools/rust/rust-source.inc
+++ b/recipes-devtools/rust/rust-source.inc
@@ -8,6 +8,7 @@ SRC_URI += "https://static.rust-lang.org/dist/rustc-${RUST_VERSION}-src.tar.xz;n
             file://0001-riscv32-Define-plain-syscalls-as-their-time64-varian.patch;patchdir=${RUSTSRC} \
             file://0001-Update-call-llvm-intrinsics-test.patch;patchdir=${RUSTSRC} \
             file://0001-Fix-flaky-assertions-in-oneshot-tests.patch;patchdir=${RUSTSRC} \
+            file://0001-Update-amdgpu-data-layout.patch;patchdir=${RUSTSRC} \
 "
 SRC_URI[rust.sha256sum] = "0b53ae34f5c0c3612cfe1de139f9167a018cd5737bc2205664fd69ba9b25f600"
 
-- 
2.55.0