compiler_rt: Tracking Issue Integer Routines

[matu3ba]

Done	Name	a	b	Out	Comment
					Integer Bit Operations
✓	__clzsi2	u32	∅	i32	count leading zeros
✓	__clzdi2	u64	∅	i32	count leading zeros
✓	__clzti2	u128	∅	i32	count leading zeros
✓	__ctzsi2	u32	∅	i32	count trailing zeros
✓	__ctzdi2	u64	∅	i32	count trailing zeros
✓	__ctzti2	u128	∅	i32	count trailing zeros
✓	__ffssi2	u32	∅	i32	find least significant 1 bit
✓	__ffsdi2	u64	∅	i32	find least significant 1 bit
✓	__ffsti2	u128	∅	i32	find least significant 1 bit
✓	__paritysi2	u32	∅	i32	bit parity
✓	__paritydi2	u64	∅	i32	bit parity
✓	__parityti2	u128	∅	i32	bit parity
✓	__popcountsi2	u32	∅	i32	bit population
✓	__popcountdi2	u64	∅	i32	bit population
✓	__popcountti2	u128	∅	i32	bit population
✓	__bswapsi2	u32	∅	i32	byte swap
✓	__bswapdi2	u64	∅	i32	byte swap
✓	__bswapti2	u128	∅	i32	byte swap
					Integer Comparison
✓	__cmpsi2	i32	i32	i32	(a<b) -> 0, (a==b) -> 1, (a>b) -> 2
✓	__cmpdi2	i64	i64	i32	..
✗	__aeabi_lcmp	i64	i64	i32	.. ARM
✓	__cmpti2	i128	i128	i32	..
✓	__ucmpsi2	u32	u32	i32	(a<b) -> 0, (a==b) -> 1, (a>b) -> 2
✓	__ucmpdi2	u64	u64	i32	..
✗	__aeabi_ulcmp	u64	u64	i32	.. ARM
✓	__ucmpti2	u128	u128	i32	..
					Integer Arithmetic
✓	__ashlsi3	i32	i32	i32	a << b [^unused_rl78]
✓	__ashldi3	i64	i32	i64	..
✓	__ashlti3	i128	i32	i128	..
✓	__aeabi_llsl	i32	i32	i32	.. ARM
✓	__ashrsi3	i32	i32	i32	a >> b arithmetic (sign fill) [^unused_rl78]
✓	__ashrdi3	i64	i32	i64	..
✓	__ashrti3	i128	i32	i128	..
✓	__aeabi_lasr	i64	i32	i64	.. ARM
✓	__lshrsi3	i32	i32	i32	a >> b logical (zero fill) [^unused_rl78]
✓	__lshrdi3	i64	i32	i64	..
✓	__lshrti3	i128	i32	i128	..
✓	__aeabi_llsr	i64	i32	i64	.. ARM
✓	__negsi2	i32	i32	i32	-a [^libgcc_compat]
✓	__negdi2	i64	i64	i64	..
✓	__negti2	i128	i128	i128	..
✓	__mulsi3	i32	i32	i32	a * b
✓	__muldi3	i64	i64	i64	..
✓	__aeabi_lmul	i64	i64	i64	.. ARM
✓	__multi3	i128	i128	i128	..
✓	__divsi3	i32	i32	i32	a / b
✓	__divdi3	i64	i64	i64	..
✓	__divti3	i128	i128	i128	..
✓	__aeabi_idiv	i32	i32	i32	.. ARM
✓	__udivsi3	u32	u32	u32	a / b
✓	__udivdi3	u64	u64	u64	..
✓	__udivti3	u128	u128	u128	..
✓	__aeabi_uidiv	i32	i32	i32	.. ARM
✓	__modsi3	i32	i32	i32	a % b
✓	__moddi3	i64	i64	i64	..
✓	__modti3	i128	i128	i128	..
✓	__umodsi3	u32	u32	u32	a % b
✓	__umoddi3	u64	u64	u64	..
✓	__umodti3	u128	u128	u128	..
✓	__udivmodsi4	u32	u32	u32	a / b, rem.* = a % b
✓	__aeabi_uidivmod	u32	u32	u32	.. ARM
✓	__udivmoddi4	u64	u64	u64	..
✓	__aeabi_uldivmod	u64	u64	u64	.. ARM
✓	__udivmodti4	u128	u128	u128	..
✓	__divmodsi4	i32	i32	i32	a / b, rem.* = a % b
✓	__aeabi_idivmod	i32	i32	i32	.. ARM
✓	__divmoddi4	i64	i64	i64	..
✓	__aeabi_ldivmod	i64	i64	i64	.. ARM
✓	__divmodti4	i128	i128	i128	.. [^libgcc_compat]
					Integer Arithmetic with Trapping Overflow
✓	__absvsi2	i32	i32	i32	abs(a)
✓	__absvdi2	i64	i64	i64	..
✓	__absvti2	i128	i128	i128	..
✓	__negvsi2	i32	i32	i32	-a [^libgcc_compat]
✓	__negvdi2	i64	i64	i64	..
✓	__negvti2	i128	i128	i128	..
✗	__addvsi3	i32	i32	i32	a + b
✗	__addvdi3	i64	i64	i64	..
✗	__addvti3	i128	i128	i128	..
✗	__subvsi3	i32	i32	i32	a - b
✗	__subvdi3	i64	i64	i64	..
✗	__subvti3	i128	i128	i128	..
✗	__mulvsi3	i32	i32	i32	a * b
✗	__mulvdi3	i64	i64	i64	..
✗	__mulvti3	i128	i128	i128	..
					Integer Arithmetic which Return on Overflow [^noptr_faster]
✓	__addosi4	i32	i32	i32	a + b, overflow->ov.*=1 else 0 [^perf_addition]
✓	__addodi4	i64	i64	i64	..
✓	__addoti4	i128	i128	i128	..
✓	__subosi4	i32	i32	i32	a - b, overflow->ov.*=1 else 0 [^perf_addition]
✓	__subodi4	i64	i64	i64	..
✓	__suboti4	i128	i128	i128	..
✓	__mulosi4	i32	i32	i32	a * b, overflow->ov.*=1 else 0
✓	__mulodi4	i64	i64	i64	..
✓	__muloti4	i128	i128	i128	..

Missing piece:

• __addvsi3
• __addvdi3
• __addvti3
• __subvsi3
• __subvdi3
• __subvti3
• __mulvsi3
• __mulvdi3
• __mulvti3
• __aeabi_lcmp
• __aeabi_ulcmp

TODO:

• check PPC
• check SPARC

Documentation is maintained in https://github.com/matu3ba/matu3ba.github.io/tree/master/crt until review or I have a better place for it to reduce maintenance churn.

[matu3ba]

Exposing pdep and pext is another idea, but YAGNI.

[stevefan1999-personal]

__multi3 is missing on MSVC and it is referenced by zig_mul_i128, so while clang-cl can compile but we can't do so on MSVC

instead we have: _mul128 | Microsoft Learn

[matu3ba]

__multi3 is missing on MSVC and it is referenced by zig_mul_i128, so while clang-cl can compile but we can't do so on MSVC

See lib/compiler_rt/mulXi3.zig:17:

comptime {
    @export(__mulsi3, .{ .name = "__mulsi3", .linkage = common.linkage, .visibility = common.visibility });
    if (common.want_aeabi) {
        @export(__aeabi_lmul, .{ .name = "__aeabi_lmul", .linkage = common.linkage, .visibility = common.visibility });
    } else {
        @export(__muldi3, .{ .name = "__muldi3", .linkage = common.linkage, .visibility = common.visibility });
    }
    if (common.want_windows_v2u64_abi) {
        @export(__multi3_windows_x86_64, .{ .name = "__multi3", .linkage = common.linkage, .visibility = common.visibility });
    } else {
        @export(__multi3, .{ .name = "__multi3", .linkage = common.linkage, .visibility = common.visibility });
    }
}

We want to keep bootstrapping code as simple as reasonable, but we need the compiler_rt things for LLVM, so it makes no sense to conditionally use the Windows stuff. Or can you show significant performance differences for bootstrapping justifying additional complexity?

[silbinarywolf]

__multi3 does not exist for PowerPC, or at least when compiling for the Wii using the devkitPro toolchain (patched GCC)
Looks like LLVM had to handle this: https://reviews.llvm.org/D119624

For context, I was experimenting with compiling to C with .ofmt = .c and feeding that file + zig.h into the GCC compile to make it build it.

[andrewrk]

Not sure what you mean by __multi3 not existing for PowerPC. All compiler rt functions are provided by zig. Zig creates a compiler rt with weak symbols so that any functions needed are available but also overridable.

[silbinarywolf]

Ah, in my testing I used .ofmt = c as the target with b.addObject to create the .c file. Since I was feeding this output file directly to devkitPPC\bin\powerpc-eabi-gcc.exe it wasn't including the compiler_rt.

Setting obj.bundle_compiler_rt = true; got it to compile, albeit with warnings. Also it crashed when I tried to run it on Dolphin but it did compile 😁 (For clarity, it runs fine on Dolphin if I just get Zig+LLVM to output the .o file and pass that into gcc)

Not sure if its helpful at all to post the warnings but here they are, also a screenshot:

D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:9144:16: warning: conflicting types for built-in function 'printf'; expected 'int(const char *, ...)' [-Wbuiltin-declaration-mismatch]
 9144 | zig_extern int printf(uint8_t const *, ...);
      |                ^~~~~~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:3:1: note: 'printf' is declared in header '<stdio.h>'
    2 | #include "zig.h"
  +++ |+#include <stdio.h>
    3 | struct anon__lazy_66 {
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c: In function 'ceill':
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:50092:2: warning: 'memcpy' reading 16 bytes from a region of size 8 [-Wstringop-overread]
50092 |  memcpy(&t0, &a0, sizeof(zig_f128));
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:50087:37: note: source object 'a0' of size 8
50087 | long double ceill(long double const a0) {
      |                   ~~~~~~~~~~~~~~~~~~^~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c: In function 'expl':
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:51172:2: warning: 'memcpy' reading 16 bytes from a region of size 8 [-Wstringop-overread]
51172 |  memcpy(&t0, &a0, sizeof(zig_f128));
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:51167:36: note: source object 'a0' of size 8
51167 | long double expl(long double const a0) {
      |                  ~~~~~~~~~~~~~~~~~~^~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c: In function 'exp2l':
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:51756:2: warning: 'memcpy' reading 16 bytes from a region of size 8 [-Wstringop-overread]
51756 |  memcpy(&t0, &a0, sizeof(zig_f128));
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:51751:37: note: source object 'a0' of size 8
51751 | long double exp2l(long double const a0) {
      |                   ~~~~~~~~~~~~~~~~~~^~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c: In function 'fabsl':
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:51894:2: warning: 'memcpy' reading 16 bytes from a region of size 8 [-Wstringop-overread]
51894 |  memcpy(&t0, &a0, sizeof(zig_f128));
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:51889:37: note: source object 'a0' of size 8
51889 | long double fabsl(long double const a0) {
      |                   ~~~~~~~~~~~~~~~~~~^~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c: In function 'cosl':
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:50505:2: warning: 'memcpy' reading 16 bytes from a region of size 8 [-Wstringop-overread]
50505 |  memcpy(&t0, &a0, sizeof(zig_f128));
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:50500:36: note: source object 'a0' of size 8
50500 | long double cosl(long double const a0) {
      |                  ~~~~~~~~~~~~~~~~~~^~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c: In function 'floorl':
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:52412:2: warning: 'memcpy' reading 16 bytes from a region of size 8 [-Wstringop-overread]
52412 |  memcpy(&t0, &a0, sizeof(zig_f128));
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:52407:38: note: source object 'a0' of size 8
52407 | long double floorl(long double const a0) {
      |                    ~~~~~~~~~~~~~~~~~~^~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c: In function 'fmal':
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:53028:2: warning: 'memcpy' reading 16 bytes from a region of size 8 [-Wstringop-overread]
53028 |  memcpy(&t0, &a0, sizeof(zig_f128));
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:53021:36: note: source object 'a0' of size 8
53021 | long double fmal(long double const a0, long double const a1, long double const a2) {
      |                  ~~~~~~~~~~~~~~~~~~^~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:53029:2: warning: 'memcpy' reading 16 bytes from a region of size 8 [-Wstringop-overread]
53029 |  memcpy(&t1, &a1, sizeof(zig_f128));
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:53021:58: note: source object 'a1' of size 8
53021 | long double fmal(long double const a0, long double const a1, long double const a2) {
      |                                        ~~~~~~~~~~~~~~~~~~^~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:53030:2: warning: 'memcpy' reading 16 bytes from a region of size 8 [-Wstringop-overread]
53030 |  memcpy(&t2, &a2, sizeof(zig_f128));
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:53021:80: note: source object 'a2' of size 8
53021 | long double fmal(long double const a0, long double const a1, long double const a2) {
      |                                                              ~~~~~~~~~~~~~~~~~~^~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c: In function 'fmaxl':
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:53289:2: warning: 'memcpy' reading 16 bytes from a region of size 8 [-Wstringop-overread]
53289 |  memcpy(&t0, &a0, sizeof(zig_f128));
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:53283:37: note: source object 'a0' of size 8
53283 | long double fmaxl(long double const a0, long double const a1) {
      |                   ~~~~~~~~~~~~~~~~~~^~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:53290:2: warning: 'memcpy' reading 16 bytes from a region of size 8 [-Wstringop-overread]
53290 |  memcpy(&t1, &a1, sizeof(zig_f128));
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:53283:59: note: source object 'a1' of size 8
53283 | long double fmaxl(long double const a0, long double const a1) {
      |                                         ~~~~~~~~~~~~~~~~~~^~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c: In function 'fminl':
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:53549:2: warning: 'memcpy' reading 16 bytes from a region of size 8 [-Wstringop-overread]
53549 |  memcpy(&t0, &a0, sizeof(zig_f128));
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:53543:37: note: source object 'a0' of size 8
53543 | long double fminl(long double const a0, long double const a1) {
      |                   ~~~~~~~~~~~~~~~~~~^~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:53550:2: warning: 'memcpy' reading 16 bytes from a region of size 8 [-Wstringop-overread]
53550 |  memcpy(&t1, &a1, sizeof(zig_f128));
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:53543:59: note: source object 'a1' of size 8
53543 | long double fminl(long double const a0, long double const a1) {
      |                                         ~~~~~~~~~~~~~~~~~~^~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c: In function 'fmodl':
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:55273:2: warning: 'memcpy' reading 16 bytes from a region of size 8 [-Wstringop-overread]
55273 |  memcpy(&t0, &a0, sizeof(zig_f128));
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:55267:37: note: source object 'a0' of size 8
55267 | long double fmodl(long double const a0, long double const a1) {
      |                   ~~~~~~~~~~~~~~~~~~^~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:55274:2: warning: 'memcpy' reading 16 bytes from a region of size 8 [-Wstringop-overread]
55274 |  memcpy(&t1, &a1, sizeof(zig_f128));
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:55267:59: note: source object 'a1' of size 8
55267 | long double fmodl(long double const a0, long double const a1) {
      |                                         ~~~~~~~~~~~~~~~~~~^~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c: In function 'logl':
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:55927:2: warning: 'memcpy' reading 16 bytes from a region of size 8 [-Wstringop-overread]
55927 |  memcpy(&t0, &a0, sizeof(zig_f128));
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:55922:36: note: source object 'a0' of size 8
55922 | long double logl(long double const a0) {
      |                  ~~~~~~~~~~~~~~~~~~^~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c: In function 'log10l':
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:56701:2: warning: 'memcpy' reading 16 bytes from a region of size 8 [-Wstringop-overread]
56701 |  memcpy(&t0, &a0, sizeof(zig_f128));
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:56696:38: note: source object 'a0' of size 8
56696 | long double log10l(long double const a0) {
      |                    ~~~~~~~~~~~~~~~~~~^~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c: In function 'log2l':
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:57453:2: warning: 'memcpy' reading 16 bytes from a region of size 8 [-Wstringop-overread]
57453 |  memcpy(&t0, &a0, sizeof(zig_f128));
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:57448:37: note: source object 'a0' of size 8
57448 | long double log2l(long double const a0) {
      |                   ~~~~~~~~~~~~~~~~~~^~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c: In function 'roundl':
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:58002:2: warning: 'memcpy' reading 16 bytes from a region of size 8 [-Wstringop-overread]
58002 |  memcpy(&t0, &a0, sizeof(zig_f128));
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:57997:38: note: source object 'a0' of size 8
57997 | long double roundl(long double const a0) {
      |                    ~~~~~~~~~~~~~~~~~~^~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c: In function 'sinl':
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:58450:2: warning: 'memcpy' reading 16 bytes from a region of size 8 [-Wstringop-overread]
58450 |  memcpy(&t0, &a0, sizeof(zig_f128));
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:58445:36: note: source object 'a0' of size 8
58445 | long double sinl(long double const a0) {
      |                  ~~~~~~~~~~~~~~~~~~^~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c: In function 'sincosl':
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:59024:2: warning: 'memcpy' reading 16 bytes from a region of size 8 [-Wstringop-overread]
59024 |  memcpy(&t0, &a0, sizeof(zig_f128));
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:59018:32: note: source object 'a0' of size 8
59018 | void sincosl(long double const a0, long double *const a1, long double *const a2) {
      |              ~~~~~~~~~~~~~~~~~~^~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c: In function 'sqrtl':
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:60022:2: warning: 'memcpy' reading 16 bytes from a region of size 8 [-Wstringop-overread]
60022 |  memcpy(&t0, &a0, sizeof(zig_f128));
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:60017:37: note: source object 'a0' of size 8
60017 | long double sqrtl(long double const a0) {
      |                   ~~~~~~~~~~~~~~~~~~^~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c: In function 'tanl':
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:60374:2: warning: 'memcpy' reading 16 bytes from a region of size 8 [-Wstringop-overread]
60374 |  memcpy(&t0, &a0, sizeof(zig_f128));
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:60369:36: note: source object 'a0' of size 8
60369 | long double tanl(long double const a0) {
      |                  ~~~~~~~~~~~~~~~~~~^~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c: In function 'truncl':
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:60644:2: warning: 'memcpy' reading 16 bytes from a region of size 8 [-Wstringop-overread]
60644 |  memcpy(&t0, &a0, sizeof(zig_f128));
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
D:\ZigProjects\map-editor\.zig-cache\o\a0f12b3c5235c27b177fadbc3243019b\map-editor.c:60639:38: note: source object 'a0' of size 8
60639 | long double truncl(long double const a0) {

[andrewrk]

I'm not seeing the value in this tracking issue.