51affa0394
tests will check: - correct emit of assembly for softfloat target - incompatible set features will emit warnings/errors - incompatible target tripples in crates will not link
64 lines
2.2 KiB
Rust
64 lines
2.2 KiB
Rust
//@ add-minicore
|
|
//@ revisions: enable-softfloat disable-softfloat
|
|
//@ assembly-output: emit-asm
|
|
//@ compile-flags: -Copt-level=3 --crate-type=lib
|
|
//@[enable-softfloat] compile-flags: --target=s390x-unknown-none-softfloat
|
|
//@[enable-softfloat] needs-llvm-components: systemz
|
|
//@[disable-softfloat] compile-flags: --target=s390x-unknown-linux-gnu
|
|
//@[disable-softfloat] needs-llvm-components: systemz
|
|
//@ ignore-backends: gcc
|
|
|
|
#![feature(no_core, lang_items)]
|
|
#![no_std]
|
|
#![no_core]
|
|
|
|
extern crate minicore;
|
|
use minicore::*;
|
|
|
|
extern "C" {
|
|
fn extern_func(value: f64) -> f64;
|
|
}
|
|
|
|
// CHECK-LABEL: test_softfloat
|
|
#[no_mangle]
|
|
extern "C" fn test_softfloat() -> f64 {
|
|
let value = 3.141_f64;
|
|
|
|
// without softfloat we load the value direct to the first float register
|
|
// we do NOT construct a softfloat in r2 (first non-float arg register)
|
|
// disable-softfloat: ld %f{{.*}}, 0(%r{{.*}})
|
|
// disable-softfloat-NOT: llihf %r{{.*}}, 1074340036
|
|
// disable-softfloat-NOT: oilf %r{{.*}}, 2611340116
|
|
|
|
// with softfloat we construct the softfloat arg in r2
|
|
// we do NOT pass anything by f0 (first float arg register)
|
|
// float registers can not be accessed
|
|
// enable-softfloat: llihf %r{{.*}}, 1074340036
|
|
// enable-softfloat-NEXT: oilf %r{{.*}}, 2611340116
|
|
// enable-softfloat-NOT: ld %f{{.*}}, 0(%r{{.*}})
|
|
|
|
unsafe { extern_func(value) };
|
|
// disable-softfloat-NEXT: brasl %r{{.*}}, extern_func@PLT
|
|
// enable-softfloat-NEXT: brasl %r{{.*}}, extern_func@PLT
|
|
|
|
// for return we check that without softfloat we write to float register
|
|
// disable-softfloat: ld %f{{.*}}, 0(%r{{.*}})
|
|
// disable-softfloat-NOT: llihf %r{{.*}}, 1072841097
|
|
// disable-softfloat-NOT: oilf %r{{.*}}, 927712936
|
|
|
|
#[cfg(not(target_feature = "soft-float"))]
|
|
{
|
|
1.141_f64
|
|
}
|
|
|
|
// for return we check that WITH softfloat we write to genral purpose register
|
|
// enable-softfloat: llihf %r{{.*}}, 1072841097
|
|
// enable-softfloat-NEXT: oilf %r{{.*}}, 927712936
|
|
// enable-softfloat-NOT: ld %f{{.*}}, 0(%r{{.*}})
|
|
#[cfg(target_feature = "soft-float")]
|
|
{
|
|
2.718_f64
|
|
}
|
|
// enable-softfloat: br %r{{.*}}
|
|
// disable-softfloat: br %r{{.*}}
|
|
}
|