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update_cpu_features: Add support for parsing DefaultExts as used for aarch64.

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Alex Rønne Petersen 2024-09-24 11:08:29 +02:00
parent d3ba5f397d
commit dcbd3cbce9
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1 changed files with 18 additions and 4 deletions
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22
tools/update_cpu_features.zig
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@ -61,10 +61,6 @@ const llvm_targets = [_]LlvmTarget{
.zig_name = "contextidr_el2",
.desc = "Enable RW operand Context ID Register (EL2)",
},
.{
.llvm_name = "v8a",
.extra_deps = &.{"neon"},
},
.{
.llvm_name = "neoversee1",
.flatten = true,
@ -1436,6 +1432,24 @@ fn processOneTarget(job: Job) anyerror!void {
try deps.append(other_zig_name);
}
}
// This is used by AArch64.
if (kv.value_ptr.object.get("DefaultExts")) |exts_val| {
for (exts_val.array.items) |ext| {
const other_key = ext.object.get("def").?.string;
const other_obj = &root_map.getPtr(other_key).?.object;
const other_llvm_name = other_obj.get("Name").?.string;
const other_zig_name = (try llvmFeatureNameToZigNameOmit(
arena,
llvm_target,
other_llvm_name,
)) orelse continue;
for (omit_deps) |omit_dep| {
if (mem.eql(u8, other_zig_name, omit_dep)) break;
} else {
try deps.append(other_zig_name);
}
}
}
for (extra_deps) |extra_dep| {
try deps.append(extra_dep);
}