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compiler: don't use self-hosted backends on big-endian hosts

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https://github.com/ziglang/zig/issues/25961
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Alex Rønne Petersen 2025-11-17 20:35:04 +01:00
parent 959a3612c2
commit 4b99e3718b
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4 changed files with 12 additions and 5 deletions
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2
src/target.zig
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@ -1,3 +1,4 @@
const builtin = @import("builtin");
const std = @import("std"); const std = @import("std");
const assert = std.debug.assert; const assert = std.debug.assert;
@ -255,6 +256,7 @@ pub fn hasNewLinkerSupport(ofmt: std.Target.ObjectFormat, backend: std.builtin.C
/// debug mode. A given target should only return true here if it is passing greater /// debug mode. A given target should only return true here if it is passing greater
/// than or equal to the number of behavior tests as the respective LLVM backend. /// than or equal to the number of behavior tests as the respective LLVM backend.
pub fn selfHostedBackendIsAsRobustAsLlvm(target: *const std.Target) bool { pub fn selfHostedBackendIsAsRobustAsLlvm(target: *const std.Target) bool {
if (comptime builtin.cpu.arch.endian() == .big) return false; // https://github.com/ziglang/zig/issues/25961
if (target.cpu.arch.isSpirV()) return true; if (target.cpu.arch.isSpirV()) return true;
if (target.cpu.arch == .x86_64 and target.ptrBitWidth() == 64) { if (target.cpu.arch == .x86_64 and target.ptrBitWidth() == 64) {
if (target.os.tag == .illumos) { if (target.os.tag == .illumos) {

1
test/src/ErrorTrace.zig
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@ -39,6 +39,7 @@ pub fn addCase(self: *ErrorTrace, case: Case) void {
} }
fn shouldTestNonLlvm(target: *const std.Target) bool { fn shouldTestNonLlvm(target: *const std.Target) bool {
if (comptime builtin.cpu.arch.endian() == .big) return false; // https://github.com/ziglang/zig/issues/25961
return switch (target.cpu.arch) { return switch (target.cpu.arch) {
.x86_64 => switch (target.ofmt) { .x86_64 => switch (target.ofmt) {
.elf => !target.os.tag.isBSD() and target.os.tag != .illumos, .elf => !target.os.tag.isBSD() and target.os.tag != .illumos,

5
test/src/StackTrace.zig
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@ -44,13 +44,16 @@ fn addCaseTarget(
target: *const std.Build.ResolvedTarget, target: *const std.Build.ResolvedTarget,
triple: ?[]const u8, triple: ?[]const u8,
) void { ) void {
const both_backends = switch (target.result.cpu.arch) { const both_backends = b: {
if (comptime builtin.cpu.arch.endian() == .big) break :b false; // https://github.com/ziglang/zig/issues/25961
break :b switch (target.result.cpu.arch) {
.x86_64 => switch (target.result.ofmt) { .x86_64 => switch (target.result.ofmt) {
.elf => !target.result.os.tag.isBSD() and target.result.os.tag != .illumos, .elf => !target.result.os.tag.isBSD() and target.result.os.tag != .illumos,
else => false, else => false,
}, },
else => false, else => false,
}; };
};
const both_pie = switch (target.result.os.tag) { const both_pie = switch (target.result.os.tag) {
.fuchsia, .openbsd => false, .fuchsia, .openbsd => false,
else => true, else => true,

1
test/tests.zig
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@ -2500,6 +2500,7 @@ fn addOneModuleTest(
} }
pub fn wouldUseLlvm(use_llvm: ?bool, query: std.Target.Query, optimize_mode: OptimizeMode) bool { pub fn wouldUseLlvm(use_llvm: ?bool, query: std.Target.Query, optimize_mode: OptimizeMode) bool {
if (comptime builtin.cpu.arch.endian() == .big) return true; // https://github.com/ziglang/zig/issues/25961
if (use_llvm) |x| return x; if (use_llvm) |x| return x;
if (query.ofmt == .c) return false; if (query.ofmt == .c) return false;
switch (optimize_mode) { switch (optimize_mode) {