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Replace many foreign llvm calls with intrinsics

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This commit is contained in:
gingerBill
2021-04-25 20:22:26 +01:00
parent cb2e6ea31d
commit 72aa0e6e38
12 changed files with 78 additions and 247 deletions
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core/runtime/udivmod128.odin
+4 -28
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@@ -1,35 +1,11 @@
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,
};
import "intrinsics"
udivmod128 :: proc "c" (a, b: u128, rem: ^u128) -> u128 {
_ctz :: intrinsics.trailing_zeros;
_clz :: intrinsics.leading_zeros;
n := transmute([2]u64)a;
d := transmute([2]u64)b;
q, r: [2]u64 = ---, ---;