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Fix loading of 128-bit numbers

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Brian Carroll 2021-11-21 23:44:42 +00:00
parent bceebc4f8f
commit bd2813f36c
1 changed files with 17 additions and 11 deletions
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28
compiler/gen_wasm/src/storage.rs
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@ -247,22 +247,28 @@ impl<'a> Storage<'a> {
} => { } => {
let (local_id, offset) = location.local_and_offset(self.stack_frame_pointer); let (local_id, offset) = location.local_and_offset(self.stack_frame_pointer);
// Load the address of the value let get_addr = |cb: &mut CodeBuilder| {
code_builder.get_local(local_id); cb.get_local(local_id);
if offset != 0 { if offset != 0 {
code_builder.i32_const(offset as i32); cb.i32_const(offset as i32);
code_builder.i32_add(); cb.i32_add();
} }
};
if format != StackMemoryFormat::Aggregate { if format == StackMemoryFormat::Aggregate {
get_addr(code_builder);
code_builder.set_top_symbol(sym);
} else {
// It's one of the 128-bit numbers, all of which we load as two i64's // It's one of the 128-bit numbers, all of which we load as two i64's
// Mark the same Symbol twice in the VM value stack! Shouldn't matter except debug. // (Mark the same Symbol twice. Shouldn't matter except for debugging.)
get_addr(code_builder);
code_builder.i64_load(Align::Bytes8, offset); code_builder.i64_load(Align::Bytes8, offset);
code_builder.set_top_symbol(sym); code_builder.set_top_symbol(sym);
code_builder.i64_load(Align::Bytes8, offset + 8);
}
code_builder.set_top_symbol(sym); get_addr(code_builder);
code_builder.i64_load(Align::Bytes8, offset + 8);
code_builder.set_top_symbol(sym);
}
} }
} }
} }