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Make f32(u8) etc do an immediate cast to f32(u32(u8)) in code generation

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gingerBill
2024-06-09 13:20:48 +01:00
parent 14f08ff02b
commit e0d0dc704c
1 changed files with 29 additions and 2 deletions
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31
src/llvm_backend_expr.cpp
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@@ -1873,13 +1873,40 @@ gb_internal lbValue lb_emit_conv(lbProcedure *p, lbValue value, Type *t) {
lbValue res_i128 = lb_emit_runtime_call(p, call, args);
return lb_emit_conv(p, res_i128, t);
}
i64 sz = type_size_of(src);
lbValue res = {};
res.type = t;
if (is_type_unsigned(dst)) {
res.value = LLVMBuildFPToUI(p->builder, value.value, lb_type(m, t), "");
switch (sz) {
case 2:
case 4:
res.value = LLVMBuildFPToUI(p->builder, value.value, lb_type(m, t_u32), "");
res.value = LLVMBuildIntCast2(p->builder, res.value, lb_type(m, t), false, "");
break;
case 8:
res.value = LLVMBuildFPToUI(p->builder, value.value, lb_type(m, t_u64), "");
res.value = LLVMBuildIntCast2(p->builder, res.value, lb_type(m, t), false, "");
break;
default:
GB_PANIC("Unhandled float type");
break;
}
} else {
res.value = LLVMBuildFPToSI(p->builder, value.value, lb_type(m, t), "");
switch (sz) {
case 2:
case 4:
res.value = LLVMBuildFPToSI(p->builder, value.value, lb_type(m, t_i32), "");
res.value = LLVMBuildIntCast2(p->builder, res.value, lb_type(m, t), false, "");
break;
case 8:
res.value = LLVMBuildFPToSI(p->builder, value.value, lb_type(m, t_i64), "");
res.value = LLVMBuildIntCast2(p->builder, res.value, lb_type(m, t), false, "");
break;
default:
GB_PANIC("Unhandled float type");
break;
}
}
return res;
}