From 78f3946ffd44aff5c57baf4192d9adbd70c3f576 Mon Sep 17 00:00:00 2001 From: WANG Rui Date: Wed, 20 Nov 2024 22:03:20 +0800 Subject: [PATCH] ABI checks: add support for loongarch LoongArch psABI[^1] specifies that LSX vector types are passed via general-purpose registers, while LASX vector types are passed indirectly through the stack. This patch addresses the following warnings: ``` warning: this function call uses a SIMD vector type that is not currently supported with the chosen ABI --> .../library/core/src/../../stdarch/crates/core_arch/src/loongarch64/lsx/generated.rs:3695:5 | 3695 | __lsx_vreplgr2vr_b(a) | ^^^^^^^^^^^^^^^^^^^^^ function called here | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! = note: for more information, see issue #116558 = note: `#[warn(abi_unsupported_vector_types)]` on by default ``` [^1]: https://github.com/loongson/la-abi-specs/blob/release/lapcs.adoc --- compiler/rustc_target/src/target_features.rs | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/compiler/rustc_target/src/target_features.rs b/compiler/rustc_target/src/target_features.rs index 3a1306072658d..c89045c93e304 100644 --- a/compiler/rustc_target/src/target_features.rs +++ b/compiler/rustc_target/src/target_features.rs @@ -611,6 +611,8 @@ const HEXAGON_FEATURES_FOR_CORRECT_VECTOR_ABI: &'static [(u64, &'static str)] = &[/*(512, "hvx-length64b"),*/ (1024, "hvx-length128b")]; const MIPS_FEATURES_FOR_CORRECT_VECTOR_ABI: &'static [(u64, &'static str)] = &[(128, "msa")]; const CSKY_FEATURES_FOR_CORRECT_VECTOR_ABI: &'static [(u64, &'static str)] = &[(128, "vdspv1")]; +const LOONGARCH_FEATURES_FOR_CORRECT_VECTOR_ABI: &'static [(u64, &'static str)] = + &[(128, "lsx"), (256, "lasx")]; impl super::spec::Target { pub fn rust_target_features(&self) -> &'static [(&'static str, Stability, ImpliedFeatures)] { @@ -638,7 +640,7 @@ impl super::spec::Target { "aarch64" | "arm64ec" => AARCH64_FEATURES_FOR_CORRECT_VECTOR_ABI, "arm" => ARM_FEATURES_FOR_CORRECT_VECTOR_ABI, "powerpc" | "powerpc64" => POWERPC_FEATURES_FOR_CORRECT_VECTOR_ABI, - "loongarch64" => &[], // on-stack ABI, so we complain about all by-val vectors + "loongarch64" => LOONGARCH_FEATURES_FOR_CORRECT_VECTOR_ABI, "riscv32" | "riscv64" => RISCV_FEATURES_FOR_CORRECT_VECTOR_ABI, "wasm32" | "wasm64" => WASM_FEATURES_FOR_CORRECT_VECTOR_ABI, "s390x" => S390X_FEATURES_FOR_CORRECT_VECTOR_ABI,