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Implement abs

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This commit is contained in:
Andrzej Janik 2024-12-04 18:57:09 +01:00
parent 7a6df9dcbf
commit 320cf9396c
1 changed files with 25 additions and 6 deletions
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31
ptx/src/pass/emit_llvm.rs
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@ -96,10 +96,6 @@ impl Module {
let memory_buffer = unsafe { LLVMWriteBitcodeToMemoryBuffer(self.get()) };
MemoryBuffer(memory_buffer)
}
fn write_to_stderr(&self) {
unsafe { LLVMDumpModule(self.get()) };
}
}
impl Drop for Module {
@ -183,7 +179,6 @@ pub(super) fn run<'input>(
Directive2::Method(method) => emit_ctx.emit_method(method)?,
}
}
module.write_to_stderr();
if let Err(err) = module.verify() {
panic!("{:?}", err);
}
@ -529,7 +524,7 @@ impl<'a> MethodEmitContext<'a> {
ast::Instruction::Shl { data, arguments } => self.emit_shl(data, arguments),
ast::Instruction::Ret { data } => Ok(self.emit_ret(data)),
ast::Instruction::Cvta { data, arguments } => self.emit_cvta(data, arguments),
ast::Instruction::Abs { .. } => todo!(),
ast::Instruction::Abs { data, arguments } => self.emit_abs(data, arguments),
ast::Instruction::Mad { data, arguments } => self.emit_mad(data, arguments),
ast::Instruction::Fma { data, arguments } => self.emit_fma(data, arguments),
ast::Instruction::Sub { data, arguments } => self.emit_sub(data, arguments),
@ -2149,6 +2144,30 @@ impl<'a> MethodEmitContext<'a> {
Ok(())
}
fn emit_abs(
&mut self,
data: ast::TypeFtz,
arguments: ptx_parser::AbsArgs<SpirvWord>,
) -> Result<(), TranslateError> {
let llvm_type = get_scalar_type(self.context, data.type_);
let src = self.resolver.value(arguments.src)?;
let (prefix, intrinsic_arguments) = if data.type_.kind() == ast::ScalarKind::Float {
("llvm.fabs", vec![(src, llvm_type)])
} else {
let pred = get_scalar_type(self.context, ast::ScalarType::Pred);
let zero = unsafe { LLVMConstInt(pred, 0, 0) };
("llvm.abs", vec![(src, llvm_type), (zero, pred)])
};
let llvm_intrinsic = format!("{}.{}\0", prefix, LLVMTypeDisplay(data.type_));
self.emit_intrinsic(
unsafe { CStr::from_bytes_with_nul_unchecked(llvm_intrinsic.as_bytes()) },
Some(arguments.dst),
&data.type_.into(),
intrinsic_arguments,
)?;
Ok(())
}
/*
// Currently unused, LLVM 18 (ROCm 6.2) does not support `llvm.set.rounding`
// Should be available in LLVM 19