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Clean up ScopedFtz conditional compilation for MIRI

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This commit is contained in:
Adrien Prokopowicz 2023-05-22 22:41:11 +02:00 committed by Robbert van der Helm
parent 4c87db906a
commit d20b9a19ee
1 changed files with 10 additions and 9 deletions
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19
src/wrapper/util.rs
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@ -203,19 +203,20 @@ struct ScopedFtz {
impl ScopedFtz {
fn enable() -> Self {
#[cfg(not(miri))]
cfg_if::cfg_if! {
if #[cfg(all(target_feature = "sse", not(miri)))] {
if #[cfg(target_feature = "sse")] {
let mode = unsafe { std::arch::x86_64::_MM_GET_FLUSH_ZERO_MODE() };
let should_disable_again = mode != std::arch::x86_64::_MM_FLUSH_ZERO_ON;
if should_disable_again {
unsafe { std::arch::x86_64::_MM_SET_FLUSH_ZERO_MODE(std::arch::x86_64::_MM_FLUSH_ZERO_ON) };
}
Self {
return Self {
should_disable_again,
_send_sync_marker: PhantomData,
}
} else if #[cfg(all(target_arch = "aarch64", not(miri)))] {
} else if #[cfg(target_arch = "aarch64")] {
// There are no convient intrinsics to change the FTZ settings on AArch64, so this
// requires inline assembly:
// https://developer.arm.com/documentation/ddi0595/2021-06/AArch64-Registers/FPCR--Floating-point-Control-Register
@ -227,17 +228,17 @@ impl ScopedFtz {
unsafe { std::arch::asm!("msr fpcr, {}", in(reg) fpcr | AARCH64_FTZ_BIT) };
}
Self {
return Self {
should_disable_again,
_send_sync_marker: PhantomData,
}
} else {
Self {
should_disable_again: false,
_send_sync_marker: PhantomData,
}
}
}
Self {
should_disable_again: false,
_send_sync_marker: PhantomData,
}
}
}