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Add __floatdisf and __floatundisf intrinsics

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Thomas Winwood
2017-12-09 18:40:36 +00:00
parent 9116e1aa43
commit 09d201db35
2 changed files with 22 additions and 2 deletions
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20
library/compiler-builtins/src/float/conv.rs
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@@ -80,6 +80,18 @@ intrinsics! {
int_to_float!(i, i32, f64)
}
#[use_c_shim_if(all(target_arch = "x86", not(target_env = "msvc")))]
#[arm_aeabi_alias = __aeabi_l2f]
pub extern "C" fn __floatdisf(i: i64) -> f32 {
// On x86_64 LLVM will use native instructions for this conversion, we
// can just do it directly
if cfg!(target_arch = "x86_64") {
i as f32
} else {
int_to_float!(i, i64, f32)
}
}
#[use_c_shim_if(all(target_arch = "x86", not(target_env = "msvc")))]
#[arm_aeabi_alias = __aeabi_l2d]
pub extern "C" fn __floatdidf(i: i64) -> f64 {
@@ -112,6 +124,14 @@ intrinsics! {
int_to_float!(i, u32, f64)
}
#[use_c_shim_if(all(not(target_env = "msvc"),
any(target_arch = "x86",
all(not(windows), target_arch = "x86_64"))))]
#[arm_aeabi_alias = __aeabi_ul2f]
pub extern "C" fn __floatundisf(i: u64) -> f32 {
int_to_float!(i, u64, f32)
}
#[use_c_shim_if(all(not(target_env = "msvc"),
any(target_arch = "x86",
all(not(windows), target_arch = "x86_64"))))]