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Implement prefetch data intrinsics #420

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Implement prefetch data intrinsics #420

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2 changes: 1 addition & 1 deletion src/context.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -209,7 +209,7 @@ impl<'gcc, 'tcx> CodegenCx<'gcc, 'tcx> {
"__builtin_usub_overflow", "sqrtf", "sqrt", "__builtin_powif", "__builtin_powi", "sinf", "sin", "cosf", "cos",
"powf", "pow", "expf", "exp", "exp2f", "exp2", "logf", "log", "log10f", "log10", "log2f", "log2", "fmaf",
"fma", "fabsf", "fabs", "fminf", "fmin", "fmaxf", "fmax", "copysignf", "copysign", "floorf", "floor", "ceilf",
"ceil", "truncf", "trunc", "rintf", "rint", "nearbyintf", "nearbyint", "roundf", "round",
"ceil", "truncf", "trunc", "rintf", "rint", "nearbyintf", "nearbyint", "roundf", "round", "__builtin_prefetch",
"__builtin_expect_with_probability",
];

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20 changes: 17 additions & 3 deletions src/intrinsic/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -168,10 +168,24 @@ impl<'a, 'gcc, 'tcx> IntrinsicCallMethods<'tcx> for Builder<'a, 'gcc, 'tcx> {
return;
}
sym::prefetch_read_data
| sym::prefetch_write_data
| sym::prefetch_read_instruction
| sym::prefetch_write_data => {
let a = args[0].immediate();
let void_ptr_type = self.context.new_type::<*const ()>();
let a_ptr = self.bitcast(a, void_ptr_type);

let b = match name {
sym::prefetch_read_data => self.const_i32(0),
sym::prefetch_write_data => self.const_i32(1),
_ => bug!(),
};

let builtin = self.context.get_builtin_function("__builtin_prefetch");
self.context.new_call(None, builtin, &[a_ptr, b]);
return;
}
sym::prefetch_read_instruction
| sym::prefetch_write_instruction => {
unimplemented!();
return;
}
sym::ctlz
| sym::ctlz_nonzero
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