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Add branch hint to unlikely branch of rem_pio2_large

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Adds a `@branchHint` to a 1 in 12 branch of the pi/2 remainder calculation.
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Liam Swayne 2024-12-19 01:20:25 -05:00 • committed by Andrew Kelley
parent 5837147461
commit b976e89c16
1 changed files with 1 additions and 0 deletions
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lib/compiler_rt/rem_pio2_large.zig
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@ -356,6 +356,7 @@ pub fn rem_pio2_large(x: []f64, y: []f64, e0: i32, nx: i32, prec: usize) i32 {
} }
} }
if (q0 > 0) { // rare case: chance is 1 in 12 if (q0 > 0) { // rare case: chance is 1 in 12
@branchHint(.unlikely);
switch (q0) { switch (q0) {
1 => iq[@intCast(jz - 1)] &= 0x7fffff, 1 => iq[@intCast(jz - 1)] &= 0x7fffff,
2 => iq[@intCast(jz - 1)] &= 0x3fffff, 2 => iq[@intCast(jz - 1)] &= 0x3fffff,