rust/tests/codegen/unchecked-float-casts.rs

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// This file tests that we don't generate any code for saturation when using the
// unchecked intrinsics.
//@ compile-flags: -C opt-level=3
//@ ignore-wasm32 the wasm target is tested in `wasm_casts_*`
#![crate_type = "lib"]
// CHECK-LABEL: @f32_to_u32
#[no_mangle]
pub fn f32_to_u32(x: f32) -> u32 {
// CHECK: fptoui
// CHECK-NOT: fcmp
// CHECK-NOT: icmp
// CHECK-NOT: select
unsafe { x.to_int_unchecked() }
}
// CHECK-LABEL: @f32_to_i32
#[no_mangle]
pub fn f32_to_i32(x: f32) -> i32 {
// CHECK: fptosi
// CHECK-NOT: fcmp
// CHECK-NOT: icmp
// CHECK-NOT: select
unsafe { x.to_int_unchecked() }
}
#[no_mangle]
pub fn f64_to_u16(x: f64) -> u16 {
// CHECK: fptoui
// CHECK-NOT: fcmp
// CHECK-NOT: icmp
// CHECK-NOT: select
unsafe { x.to_int_unchecked() }
}