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add neon load/store assembly test #154094

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1 change: 1 addition & 0 deletions src/tools/compiletest/src/directives/directive_names.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -213,6 +213,7 @@ pub(crate) const KNOWN_DIRECTIVE_NAMES: &[&str] = &[
"only-apple",
"only-arm",
"only-arm64ec",
"only-armv7-unknown-linux-gnueabihf",
"only-avr",
"only-beta",
"only-bpf",
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78 changes: 78 additions & 0 deletions tests/assembly-llvm/aarch64-arm-load-store.rs
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Original file line number Diff line number Diff line change
@@ -0,0 +1,78 @@
//@ assembly-output: emit-asm
//
//@ revisions: AARCH64
//@[AARCH64] compile-flags: -Copt-level=3
//@[AARCH64] only-aarch64-unknown-linux-gnu
//
//@ revisions: ARMV7
//@[ARMV7] compile-flags: -Copt-level=3
//@[ARMV7] only-armv7-unknown-linux-gnueabihf
//@[ARMV7] ignore-thumb
//@[ARMV7] ignore-android
#![crate_type = "lib"]
#![cfg_attr(target_arch = "arm", feature(arm_target_feature, stdarch_arm_neon_intrinsics))]

#[cfg(target_arch = "aarch64")]
use std::arch::aarch64::*;
#[cfg(target_arch = "arm")]
use std::arch::arm::*;

// Loads of 3 are error-prone because a `repr(simd)` type's size is always rounded up to the next
// power of 2. Hence, using `read_unaligned` and `write_unaligned` on such types is invalid, it
// would go out of bounds.
#[unsafe(no_mangle)]
#[cfg_attr(target_arch = "arm", target_feature(enable = "neon,v7"))]
fn test_vld3q_f32(ptr: *const f32) -> float32x4x3_t {
// AARCH64-LABEL: test_vld3q_f32
// AARCH64: ld3 { v0.4s, v1.4s, v2.4s }, [x0]
// AARCH64: stp q0, q1, [x8]
// AARCH64: str q2, [x8, #32]
// AARCH64: ret
//
// ARMV7-LABEL: test_vld3q_f32
// ARMV7: vld3.32 {d16, d18, d20}, [r1]!
// ARMV7: vld3.32 {d17, d19, d21}, [r1]
// ARMV7: vst1.32 {d16, d17}, [r0]!
// ARMV7: vst1.32 {d18, d19}, [r0]!
// ARMV7: vst1.64 {d20, d21}, [r0]
// ARMV7: bx lr
unsafe { vld3q_f32(ptr) }
}

#[unsafe(no_mangle)]
#[cfg_attr(target_arch = "arm", target_feature(enable = "neon,v7"))]
fn test_vld3q_s32(ptr: *const i32) -> int32x4x3_t {
// AARCH64-LABEL: test_vld3q_s32
// AARCH64: ld3 { v0.4s, v1.4s, v2.4s }, [x0]
// AARCH64: stp q0, q1, [x8]
// AARCH64: str q2, [x8, #32]
// AARCH64: ret
//
// ARMV7-LABEL: test_vld3q_s32
// ARMV7: vld3.32 {d16, d18, d20}, [r1]!
// ARMV7: vld3.32 {d17, d19, d21}, [r1]
// ARMV7: vst1.32 {d16, d17}, [r0]!
// ARMV7: vst1.32 {d18, d19}, [r0]!
// ARMV7: vst1.64 {d20, d21}, [r0]
// ARMV7: bx lr
unsafe { vld3q_s32(ptr) }
}

#[unsafe(no_mangle)]
#[cfg_attr(target_arch = "arm", target_feature(enable = "neon,v7"))]
fn test_vld3q_u32(ptr: *const u32) -> uint32x4x3_t {
// AARCH64-LABEL: test_vld3q_u32
// AARCH64: ld3 { v0.4s, v1.4s, v2.4s }, [x0]
// AARCH64: stp q0, q1, [x8]
// AARCH64: str q2, [x8, #32]
// AARCH64: ret
//
// ARMV7-LABEL: test_vld3q_u32
// ARMV7: vld3.32 {d16, d18, d20}, [r1]!
// ARMV7: vld3.32 {d17, d19, d21}, [r1]
// ARMV7: vst1.32 {d16, d17}, [r0]!
// ARMV7: vst1.32 {d18, d19}, [r0]!
// ARMV7: vst1.64 {d20, d21}, [r0]
// ARMV7: bx lr
unsafe { vld3q_u32(ptr) }
}
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