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Apply rounding mode in fp div (#416)

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Andrzej Janik 2025-07-17 02:22:59 +02:00 • committed by GitHub
commit 36f0ba9cbb
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1 changed files with 15 additions and 4 deletions
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19
ptx/src/pass/instruction_mode_to_global_mode/mod.rs
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@ -1921,16 +1921,27 @@ fn get_modes<T: ast::Operand>(inst: &ast::Instruction<T>) -> InstructionModes {
..
}),
..
}
| ast::Instruction::Div {
} => InstructionModes::from_ftz(*type_, *flush_to_zero),
ast::Instruction::Div {
data:
ast::DivDetails::Float(ast::DivFloatDetails {
type_,
flush_to_zero,
..
kind,
}),
..
} => InstructionModes::from_ftz(*type_, *flush_to_zero),
} => {
let rounding = match kind {
ast::DivFloatKind::Rounding(rnd) => RoundingMode::from_ast(*rnd),
ast::DivFloatKind::Approx => RoundingMode::NearestEven,
ast::DivFloatKind::ApproxFull => RoundingMode::NearestEven,
};
InstructionModes::new(
*type_,
flush_to_zero.map(DenormalMode::from_ftz),
Some(rounding),
)
}
ast::Instruction::Sin { data, .. }
| ast::Instruction::Cos { data, .. }
| ast::Instruction::Lg2 { data, .. } => InstructionModes::from_ftz_f32(data.flush_to_zero),