diff options
Diffstat (limited to '')
| -rw-r--r-- | vendor/compiler_builtins/src/float/conv.rs | 14 | ||||
| -rw-r--r-- | vendor/compiler_builtins/src/float/div.rs | 6 |
2 files changed, 10 insertions, 10 deletions
diff --git a/vendor/compiler_builtins/src/float/conv.rs b/vendor/compiler_builtins/src/float/conv.rs index 07b58f3d2..19fdc2fdc 100644 --- a/vendor/compiler_builtins/src/float/conv.rs +++ b/vendor/compiler_builtins/src/float/conv.rs @@ -13,7 +13,7 @@ mod int_to_float { let a = (i << n) >> 8; // Significant bits, with bit 24 still in tact. let b = (i << n) << 24; // Insignificant bits, only relevant for rounding. let m = a + ((b - (b >> 31 & !a)) >> 31); // Add one when we need to round up. Break ties to even. - let e = 157 - n as u32; // Exponent plus 127, minus one. + let e = 157 - n; // Exponent plus 127, minus one. (e << 23) + m // + not |, so the mantissa can overflow into the exponent. } @@ -42,8 +42,8 @@ mod int_to_float { return 0; } let n = i.leading_zeros(); - let a = ((i << n) >> 11) as u64; // Significant bits, with bit 53 still in tact. - let b = ((i << n) << 53) as u64; // Insignificant bits, only relevant for rounding. + let a = (i << n) >> 11; // Significant bits, with bit 53 still in tact. + let b = (i << n) << 53; // Insignificant bits, only relevant for rounding. let m = a + ((b - (b >> 63 & !a)) >> 63); // Add one when we need to round up. Break ties to even. let e = 1085 - n as u64; // Exponent plus 1023, minus one. (e << 52) + m // + not |, so the mantissa can overflow into the exponent. @@ -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) diff --git a/vendor/compiler_builtins/src/float/div.rs b/vendor/compiler_builtins/src/float/div.rs index 528a8368d..c2d6c07e7 100644 --- a/vendor/compiler_builtins/src/float/div.rs +++ b/vendor/compiler_builtins/src/float/div.rs @@ -135,11 +135,11 @@ where let mut correction: u32 = negate_u32(((reciprocal as u64).wrapping_mul(q31b as u64) >> 32) as u32); - reciprocal = ((reciprocal as u64).wrapping_mul(correction as u64) as u64 >> 31) as u32; + reciprocal = ((reciprocal as u64).wrapping_mul(correction as u64) >> 31) as u32; correction = negate_u32(((reciprocal as u64).wrapping_mul(q31b as u64) >> 32) as u32); - reciprocal = ((reciprocal as u64).wrapping_mul(correction as u64) as u64 >> 31) as u32; + reciprocal = ((reciprocal as u64).wrapping_mul(correction as u64) >> 31) as u32; correction = negate_u32(((reciprocal as u64).wrapping_mul(q31b as u64) >> 32) as u32); - reciprocal = ((reciprocal as u64).wrapping_mul(correction as u64) as u64 >> 31) as u32; + reciprocal = ((reciprocal as u64).wrapping_mul(correction as u64) >> 31) as u32; // Exhaustive testing shows that the error in reciprocal after three steps // is in the interval [-0x1.f58108p-31, 0x1.d0e48cp-29], in line with our |