zig

commit 27775f1a9eecc6142834affb524eadd33b9e56b7 (tree)
parent 4ba9a6f44c07ac4501766704f39c2d749b01d8da
Author: Alex Rønne Petersen <alex@alexrp.com>
Date:   Sun,  4 Aug 2024 11:04:23 +0200

std.Target: Use v9 as the baseline CPU for sparc32.

It is impossible to even build projects like glibc when targeting a generic
SPARC v8 CPU; LEON3 is effectively considered the baseline for `sparc-linux-gnu`
now, particularly due to it supporting a CASA instruction similar to the one in
SPARC v9. However, it's slightly incompatible with SPARC v9 due to having a
different ASI tag, so resulting binaries would not be portable to regular SPARC
CPUs. So, as the least bad option, make v9 the baseline for sparc32.

Diffstat:
M
lib/std/Target.zig
 | 
2
+-

1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/std/Target.zig b/lib/std/Target.zig
@@ -1502,7 +1502,7 @@ pub const Cpu = struct {
                 .x86 => &x86.cpu.pentium4,
                 .nvptx, .nvptx64 => &nvptx.cpu.sm_20,
                 .s390x => &s390x.cpu.arch8,
-                .sparc => &sparc.cpu.v8,
+                .sparc => &sparc.cpu.v9, // glibc does not work with 'plain' v8.
                 .loongarch64 => &loongarch.cpu.loongarch64,
 
                 else => generic(arch),