Add -help which prints information about the compiler flags

This commit is contained in:
gingerBill
2019-12-21 11:22:46 +00:00
parent c43d17bfec
commit 494b1e7eaa
4 changed files with 139 additions and 338 deletions
-178
View File
@@ -1,183 +1,5 @@
package runtime
@(default_calling_convention="none")
foreign {
@(link_name="llvm.cttz.i8") _ctz_u8 :: proc(i: u8, is_zero_undef := false) -> u8 ---
@(link_name="llvm.cttz.i16") _ctz_u16 :: proc(i: u16, is_zero_undef := false) -> u16 ---
@(link_name="llvm.cttz.i32") _ctz_u32 :: proc(i: u32, is_zero_undef := false) -> u32 ---
@(link_name="llvm.cttz.i64") _ctz_u64 :: proc(i: u64, is_zero_undef := false) -> u64 ---
}
_ctz :: proc{
_ctz_u8,
_ctz_u16,
_ctz_u32,
_ctz_u64,
};
@(default_calling_convention="none")
foreign {
@(link_name="llvm.ctlz.i8") _clz_u8 :: proc(i: u8, is_zero_undef := false) -> u8 ---
@(link_name="llvm.ctlz.i16") _clz_u16 :: proc(i: u16, is_zero_undef := false) -> u16 ---
@(link_name="llvm.ctlz.i32") _clz_u32 :: proc(i: u32, is_zero_undef := false) -> u32 ---
@(link_name="llvm.ctlz.i64") _clz_u64 :: proc(i: u64, is_zero_undef := false) -> u64 ---
}
_clz :: proc{
_clz_u8,
_clz_u16,
_clz_u32,
_clz_u64,
};
udivmod128 :: proc "c" (a, b: u128, rem: ^u128) -> u128 {
n := transmute([2]u64)a;
d := transmute([2]u64)b;
q, r: [2]u64 = ---, ---;
sr: u32 = 0;
low :: ODIN_ENDIAN == "big" ? 1 : 0;
high :: 1 - low;
U64_BITS :: 8*size_of(u64);
U128_BITS :: 8*size_of(u128);
// Special Cases
if n[high] == 0 {
if d[high] == 0 {
if rem != nil {
rem^ = u128(n[low] % d[low]);
}
return u128(n[low] / d[low]);
}
if rem != nil {
rem^ = u128(n[low]);
}
return 0;
}
if d[low] == 0 {
if d[high] == 0 {
if rem != nil {
rem^ = u128(n[high] % d[low]);
}
return u128(n[high] / d[low]);
}
if n[low] == 0 {
if rem != nil {
r[high] = n[high] % d[high];
r[low] = 0;
rem^ = transmute(u128)r;
}
return u128(n[high] / d[high]);
}
if d[high] & (d[high]-1) == 0 {
if rem != nil {
r[low] = n[low];
r[high] = n[high] & (d[high] - 1);
rem^ = transmute(u128)r;
}
return u128(n[high] >> _ctz(d[high]));
}
sr = transmute(u32)(i32(_clz(d[high])) - i32(_clz(n[high])));
if sr > U64_BITS - 2 {
if rem != nil {
rem^ = a;
}
return 0;
}
sr += 1;
q[low] = 0;
q[high] = n[low] << u64(U64_BITS - sr);
r[high] = n[high] >> sr;
r[low] = (n[high] << (U64_BITS - sr)) | (n[low] >> sr);
} else {
if d[high] == 0 {
if d[low] & (d[low] - 1) == 0 {
if rem != nil {
rem^ = u128(n[low] & (d[low] - 1));
}
if d[low] == 1 {
return a;
}
sr = u32(_ctz(d[low]));
q[high] = n[high] >> sr;
q[low] = (n[high] << (U64_BITS-sr)) | (n[low] >> sr);
return transmute(u128)q;
}
sr = 1 + U64_BITS + u32(_clz(d[low])) - u32(_clz(n[high]));
switch {
case sr == U64_BITS:
q[low] = 0;
q[high] = n[low];
r[high] = 0;
r[low] = n[high];
case sr < U64_BITS:
q[low] = 0;
q[high] = n[low] << (U64_BITS - sr);
r[high] = n[high] >> sr;
r[low] = (n[high] << (U64_BITS - sr)) | (n[low] >> sr);
case:
q[low] = n[low] << (U128_BITS - sr);
q[high] = (n[high] << (U128_BITS - sr)) | (n[low] >> (sr - U64_BITS));
r[high] = 0;
r[low] = n[high] >> (sr - U64_BITS);
}
} else {
sr = transmute(u32)(i32(_clz(d[high])) - i32(_clz(n[high])));
if sr > U64_BITS - 1 {
if rem != nil {
rem^ = a;
}
return 0;
}
sr += 1;
q[low] = 0;
if sr == U64_BITS {
q[high] = n[low];
r[high] = 0;
r[low] = n[high];
} else {
r[high] = n[high] >> sr;
r[low] = (n[high] << (U64_BITS - sr)) | (n[low] >> sr);
q[high] = n[low] << (U64_BITS - sr);
}
}
}
carry: u32 = 0;
r_all: u128 = ---;
for ; sr > 0; sr -= 1 {
r[high] = (r[high] << 1) | (r[low] >> (U64_BITS - 1));
r[low] = (r[low] << 1) | (q[high] >> (U64_BITS - 1));
q[high] = (q[high] << 1) | (q[low] >> (U64_BITS - 1));
q[low] = (q[low] << 1) | u64(carry);
r_all = transmute(u128)r;
s := i128(b - r_all - 1) >> (U128_BITS - 1);
carry = u32(s & 1);
r_all -= b & transmute(u128)s;
r = transmute([2]u64)r_all;
}
q_all := ((transmute(u128)q) << 1) | u128(carry);
if rem != nil {
rem^ = r_all;
}
return q_all;
}
@(link_name="__umodti3")
umodti3 :: proc "c" (a, b: i128) -> i128 {
s_a := a >> (128 - 1);
-158
View File
@@ -2,13 +2,6 @@ package strconv
using import "decimal"
Int_Flag :: enum {
Prefix,
Plus,
Space,
}
Int_Flags :: bit_set[Int_Flag];
Decimal_Slice :: struct {
digits: []byte,
count: int,
@@ -286,154 +279,3 @@ round_shortest :: proc(d: ^Decimal, mant: u64, exp: int, flt: ^Float_Info) {
}
}
MAX_BASE :: 32;
digits := "0123456789abcdefghijklmnopqrstuvwxyz";
is_integer_negative :: proc(x: u64, is_signed: bool, bit_size: int) -> (u: u64, neg: bool) {
u = x;
if is_signed {
switch bit_size {
case 8:
i := i8(u);
neg = i < 0;
u = u64(abs(i64(i)));
case 16:
i := i16(u);
neg = i < 0;
u = u64(abs(i64(i)));
case 32:
i := i32(u);
neg = i < 0;
u = u64(abs(i64(i)));
case 64:
i := i64(u);
neg = i < 0;
u = u64(abs(i64(i)));
case:
panic("is_integer_negative: Unknown integer size");
}
}
return;
}
append_bits :: proc(buf: []byte, x: u64, base: int, is_signed: bool, bit_size: int, digits: string, flags: Int_Flags) -> string {
if base < 2 || base > MAX_BASE {
panic("strconv: illegal base passed to append_bits");
}
a: [129]byte;
i := len(a);
u, neg := is_integer_negative(x, is_signed, bit_size);
b := u64(base);
for u >= b {
i-=1; a[i] = digits[u % b];
u /= b;
}
i-=1; a[i] = digits[u % b];
if .Prefix in flags {
ok := true;
switch base {
case 2: i-=1; a[i] = 'b';
case 8: i-=1; a[i] = 'o';
case 10: i-=1; a[i] = 'd';
case 12: i-=1; a[i] = 'z';
case 16: i-=1; a[i] = 'x';
case: ok = false;
}
if ok {
i-=1; a[i] = '0';
}
}
switch {
case neg:
i-=1; a[i] = '-';
case .Plus in flags:
i-=1; a[i] = '+';
case .Space in flags:
i-=1; a[i] = ' ';
}
out := a[i:];
copy(buf, out);
return string(buf[0:len(out)]);
}
is_integer_negative_128 :: proc(x: u128, is_signed: bool, bit_size: int) -> (u: u128, neg: bool) {
u = x;
if is_signed {
switch bit_size {
case 8:
i := i8(u);
neg = i < 0;
u = u128(abs(i128(i)));
case 16:
i := i16(u);
neg = i < 0;
u = u128(abs(i128(i)));
case 32:
i := i32(u);
neg = i < 0;
u = u128(abs(i128(i)));
case 64:
i := i64(u);
neg = i < 0;
u = u128(abs(i128(i)));
case 128:
i := i128(u);
neg = i < 0;
u = u128(abs(i128(i)));
case:
panic("is_integer_negative: Unknown integer size");
}
}
return;
}
append_bits_128 :: proc(buf: []byte, x: u128, base: int, is_signed: bool, bit_size: int, digits: string, flags: Int_Flags) -> string {
if base < 2 || base > MAX_BASE {
panic("strconv: illegal base passed to append_bits");
}
a: [140]byte;
i := len(a);
u, neg := is_integer_negative_128(x, is_signed, bit_size);
b := u128(base);
for u >= b {
i-=1; a[i] = digits[u % b];
u /= b;
}
i-=1; a[i] = digits[u % b];
if .Prefix in flags {
ok := true;
switch base {
case 2: i-=1; a[i] = 'b';
case 8: i-=1; a[i] = 'o';
case 10: i-=1; a[i] = 'd';
case 12: i-=1; a[i] = 'z';
case 16: i-=1; a[i] = 'x';
case: ok = false;
}
if ok {
i-=1; a[i] = '0';
}
}
switch {
case neg:
i-=1; a[i] = '-';
case .Plus in flags:
i-=1; a[i] = '+';
case .Space in flags:
i-=1; a[i] = ' ';
}
out := a[i:];
copy(buf, out);
return string(buf[0:len(out)]);
}