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Enable unadjusted_on_win64 for UEFI in some cases

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The conversion functions from i128/u128 to f32/f64 have the
`unadjusted_on_win64` attribute, but it is disabled starting with
LLVM14. This seems to be the correct thing to do for Win64, but for some
reason x86_64-unknown-uefi is different, despite generally using the
same ABI as Win64.
This commit is contained in:
Nicholas Bishop
2022-07-31 11:07:33 -04:00
parent 8a9e33297a
commit abb6893a85
2 changed files with 6 additions and 6 deletions
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8
library/compiler-builtins/src/float/conv.rs
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@@ -92,12 +92,12 @@ intrinsics! {
f64::from_bits(int_to_float::u64_to_f64_bits(i))
}
#[cfg_attr(not(target_feature = "llvm14-builtins-abi"), unadjusted_on_win64)]
#[cfg_attr(any(not(target_feature = "llvm14-builtins-abi"), target_os = "uefi"), unadjusted_on_win64)]
pub extern "C" fn __floatuntisf(i: u128) -> f32 {
f32::from_bits(int_to_float::u128_to_f32_bits(i))
}
#[cfg_attr(not(target_feature = "llvm14-builtins-abi"), unadjusted_on_win64)]
#[cfg_attr(any(not(target_feature = "llvm14-builtins-abi"), target_os = "uefi"), unadjusted_on_win64)]
pub extern "C" fn __floatuntidf(i: u128) -> f64 {
f64::from_bits(int_to_float::u128_to_f64_bits(i))
}
@@ -129,13 +129,13 @@ intrinsics! {
f64::from_bits(int_to_float::u64_to_f64_bits(i.unsigned_abs()) | sign_bit)
}
#[cfg_attr(not(target_feature = "llvm14-builtins-abi"), unadjusted_on_win64)]
#[cfg_attr(any(not(target_feature = "llvm14-builtins-abi"), target_os = "uefi"), unadjusted_on_win64)]
pub extern "C" fn __floattisf(i: i128) -> f32 {
let sign_bit = ((i >> 127) as u32) << 31;
f32::from_bits(int_to_float::u128_to_f32_bits(i.unsigned_abs()) | sign_bit)
}
#[cfg_attr(not(target_feature = "llvm14-builtins-abi"), unadjusted_on_win64)]
#[cfg_attr(any(not(target_feature = "llvm14-builtins-abi"), target_os = "uefi"), unadjusted_on_win64)]
pub extern "C" fn __floattidf(i: i128) -> f64 {
let sign_bit = ((i >> 127) as u64) << 63;
f64::from_bits(int_to_float::u128_to_f64_bits(i.unsigned_abs()) | sign_bit)