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dev backend: implement subWrap for all integer types

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Christoph Rüßler 2022-09-22 20:09:13 +02:00 • committed by Folkert
parent 081c61ead6
commit 1b023f828f
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2 changed files with 62 additions and 56 deletions
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18
crates/compiler/gen_dev/src/generic64/mod.rs
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@ -1035,19 +1035,9 @@ impl<
}
fn build_num_sub(&mut self, dst: &Symbol, src1: &Symbol, src2: &Symbol, layout: &InLayout<'a>) {
match self.layout_interner.get(*layout) {
Layout::Builtin(Builtin::Int(IntWidth::I64 | IntWidth::U64)) => {
let dst_reg = self.storage_manager.claim_general_reg(&mut self.buf, dst);
let src1_reg = self
.storage_manager
.load_to_general_reg(&mut self.buf, src1);
let src2_reg = self
.storage_manager
.load_to_general_reg(&mut self.buf, src2);
ASM::sub_reg64_reg64_reg64(&mut self.buf, dst_reg, src1_reg, src2_reg);
}
x => todo!("NumSub: layout, {:?}", x),
}
// for the time being, `num_sub` is implemented as wrapping subtraction. In roc, the normal
// `sub` should panic on overflow, but we just don't do that yet
self.build_num_sub_wrap(dst, src1, src2, layout)
}
fn build_num_sub_wrap(
@ -1058,7 +1048,7 @@ impl<
layout: &InLayout<'a>,
) {
match self.layout_interner.get(*layout) {
Layout::Builtin(Builtin::Int(IntWidth::I64 | IntWidth::U64)) => {
Layout::Builtin(Builtin::Int(quadword_and_smaller!())) => {
let dst_reg = self.storage_manager.claim_general_reg(&mut self.buf, dst);
let src1_reg = self
.storage_manager