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v.gen.c: use the __V_architecture macro in v.pref.get_host_arch()

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Delyan Angelov 2021-06-12 22:15:08 +03:00
parent 6e9218c088
commit 5452ba4653
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2 changed files with 11 additions and 14 deletions
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2
vlib/v/ast/types.v
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@ -51,7 +51,7 @@ pub fn pref_arch_to_table_language(pref_arch pref.Arch) Language {
.i386 {
Language.i386
}
._auto {
._auto, ._max {
Language.v
}
}

23
vlib/v/pref/pref.v
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@ -67,6 +67,7 @@ pub enum Arch {
rv64 // 64-bit risc-v
rv32 // 32-bit risc-v
i386
_max
}
const (
@ -754,20 +755,16 @@ pub fn cc_from_string(cc_str string) CompilerType {
}
pub fn get_host_arch() Arch {
$if amd64 {
return .amd64
// NB: we can not use `$if arch` here, because V skips cgen for the non
// current comptime branches by default, so there is a bootstrapping
// problem => the __V_architecture macro is used to resolve it.
// TODO: think about how to solve it for non C backends, perhaps we
// need a comptime `$if native {` too, and/or a mechanism to always
// generate all branches for specific functions?
if C.__V_architecture <= int(Arch._auto) || C.__V_architecture >= int(Arch._max) {
panic('unknown host CPU architecture')
}
// $if i386 {
// return .amd64
// }
// $if arm64 { // requires new vc
$if aarch64 {
return .arm64
}
// $if arm32 {
// return .arm32
// }
panic('unknown host OS')
return Arch(C.__V_architecture)
}
fn parse_define(mut prefs Preferences, define string) {