mirror of https://github.com/rust-lang/rust
71 lines
1.8 KiB
Rust
71 lines
1.8 KiB
Rust
// Test SPARC64 ABI
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// - float structure members are passes in floating point registers
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// (#86163)
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//@ assembly-output: emit-asm
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//@ needs-llvm-components: sparc
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//@ compile-flags: --target=sparcv9-sun-solaris -Copt-level=3
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#![crate_type = "lib"]
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#![feature(no_core, lang_items)]
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#![no_core]
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#[lang = "sized"]
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pub trait Sized {}
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#[lang = "copy"]
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pub trait Copy {}
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impl Copy for f32 {}
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#[repr(C)]
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pub struct Franta {
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a: f32,
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b: f32,
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c: f32,
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d: f32,
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}
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// NB: due to delay slots the `ld` following the call is actually executed before the call.
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#[no_mangle]
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pub unsafe extern "C" fn callee(arg: Franta) {
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// CHECK-LABEL: callee:
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// CHECK: st %f3, [[PLACE_D:.*]]
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// CHECK: st %f2, [[PLACE_C:.*]]
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// CHECK: st %f1, [[PLACE_B:.*]]
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// CHECK: st %f0, [[PLACE_A:.*]]
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// CHECK: call tst_use
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// CHECK-NEXT: ld [[PLACE_A]], %f1
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// CHECK: call tst_use
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// CHECK-NEXT: ld [[PLACE_B]], %f1
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// CHECK: call tst_use
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// CHECK-NEXT: ld [[PLACE_C]], %f1
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// CHECK: call tst_use
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// CHECK-NEXT: ld [[PLACE_D]], %f1
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clobber();
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tst_use(arg.a);
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tst_use(arg.b);
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tst_use(arg.c);
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tst_use(arg.d);
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tail_call_avoidance_fn();
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}
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extern "C" {
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fn opaque_callee(arg: Franta, intarg: i32);
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fn tst_use(arg: f32);
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fn clobber();
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// This exists so that post-https://reviews.llvm.org/D138741 LLVM doesn't
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// tail-call away some of our assertions.
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fn tail_call_avoidance_fn();
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}
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#[no_mangle]
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pub unsafe extern "C" fn caller() {
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// CHECK-LABEL: caller:
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// CHECK: ld [{{.*}}], %f0
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// CHECK: ld [{{.*}}], %f1
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// CHECK: ld [{{.*}}], %f2
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// CHECK: ld [{{.*}}], %f3
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// CHECK: call opaque_callee
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// CHECK: mov 3, %o2
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opaque_callee(Franta { a: 1.0, b: 2.0, c: 3.0, d: 4.0 }, 3);
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tail_call_avoidance_fn();
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}
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