authorgravatar for andrew@ziglang.orgAndrew Kelley <andrew@ziglang.org> 2020-01-21 01:22:37-05:00
committergravatar for andrew@ziglang.orgAndrew Kelley <andrew@ziglang.org> 2020-01-21 01:22:37-05:00
log39759b90fce2fa114f59793958390778275c0477
tree281c89dbe1c2dca8498ec5ef342a7ec47b7e035b
parente640d015351c3d3bf7c41020ff2a87f38f853140
signature Commit is signed but in an unrecognized format.

make zig targets show native cpu name and features

6 files changed, 101 insertions(+), 57 deletions(-)

lib/std/target.zig+2-2
......@@ -631,9 +631,9 @@ pub const Target = union(enum) {
631631 };
632632 }
633633
634 pub fn cpuFeaturesList(self: Target) []const *const Cpu.Feature {
634 pub fn cpuFeatureSet(self: Target) Cpu.Feature.Set {
635635 return switch (self.getCpuFeatures()) {
636 .baseline => self.arch.baselineFeatures(),
636 .baseline => self.getArch().baselineFeatures(),
637637 .cpu => |cpu| cpu.features,
638638 .features => |features| features,
639639 };
src-self-hosted/print_targets.zig+18-5
......@@ -9,6 +9,7 @@ pub fn cmdTargets(
99 allocator: *Allocator,
1010 args: []const []const u8,
1111 stdout: *io.OutStream(fs.File.WriteError),
12 native_target: Target,
1213) !void {
1314 const BOS = io.BufferedOutStream(fs.File.WriteError);
1415 var bos = BOS.init(stdout);
......@@ -76,22 +77,34 @@ pub fn cmdTargets(
7677 try jws.objectField("native");
7778 try jws.beginObject();
7879 {
79 const triple = try Target.current.zigTriple(allocator);
80 const triple = try native_target.zigTriple(allocator);
8081 defer allocator.free(triple);
8182 try jws.objectField("triple");
8283 try jws.emitString(triple);
8384 }
8485 try jws.objectField("arch");
85 try jws.emitString(@tagName(Target.current.getArch()));
86 try jws.emitString(@tagName(native_target.getArch()));
8687 try jws.objectField("os");
87 try jws.emitString(@tagName(Target.current.getOs()));
88 try jws.emitString(@tagName(native_target.getOs()));
8889 try jws.objectField("abi");
89 try jws.emitString(@tagName(Target.current.getAbi()));
90 try jws.emitString(@tagName(native_target.getAbi()));
9091 try jws.objectField("cpuName");
91 switch (Target.current.getCpuFeatures()) {
92 switch (native_target.getCpuFeatures()) {
9293 .baseline, .features => try jws.emitNull(),
9394 .cpu => |cpu| try jws.emitString(cpu.name),
9495 }
96 {
97 try jws.objectField("cpuFeatures");
98 try jws.beginArray();
99 const feature_set = native_target.cpuFeatureSet();
100 for (native_target.getArch().allFeaturesList()) |feature, i| {
101 if (feature_set.isEnabled(@intCast(u8, i))) {
102 try jws.arrayElem();
103 try jws.emitString(feature.name);
104 }
105 }
106 try jws.endArray();
107 }
95108 try jws.endObject();
96109
97110 try jws.endObject();
src-self-hosted/stage1.zig+78-47
......@@ -539,19 +539,82 @@ export fn stage2_progress_update_node(node: *std.Progress.Node, done_count: usiz
539539 node.context.maybeRefresh();
540540}
541541
542fn cpuFeaturesFromLLVM(
543 arch: Target.Arch,
544 llvm_cpu_name_z: ?[*:0]const u8,
545 llvm_cpu_features_opt: ?[*:0]const u8,
546) !Target.CpuFeatures {
547 if (llvm_cpu_name_z) |cpu_name_z| {
548 const llvm_cpu_name = mem.toSliceConst(u8, cpu_name_z);
549
550 for (arch.allCpus()) |cpu| {
551 const this_llvm_name = cpu.llvm_name orelse continue;
552 if (mem.eql(u8, this_llvm_name, llvm_cpu_name)) {
553 return Target.CpuFeatures{ .cpu = cpu };
554 }
555 }
556 }
557
558 var set = arch.baselineFeatures();
559 const llvm_cpu_features = llvm_cpu_features_opt orelse return Target.CpuFeatures{
560 .features = set,
561 };
562
563 var it = mem.tokenize(mem.toSliceConst(u8, llvm_cpu_features), ",");
564 while (it.next()) |decorated_llvm_feat| {
565 var op: enum {
566 add,
567 sub,
568 } = undefined;
569 var llvm_feat: []const u8 = undefined;
570 if (mem.startsWith(u8, decorated_llvm_feat, "+")) {
571 op = .add;
572 llvm_feat = decorated_llvm_feat[1..];
573 } else if (mem.startsWith(u8, decorated_llvm_feat, "-")) {
574 op = .sub;
575 llvm_feat = decorated_llvm_feat[1..];
576 } else {
577 return error.InvalidLlvmCpuFeaturesFormat;
578 }
579 for (arch.allFeaturesList()) |feature, index| {
580 const this_llvm_name = feature.llvm_name orelse continue;
581 if (mem.eql(u8, llvm_feat, this_llvm_name)) {
582 switch (op) {
583 .add => set.addFeature(@intCast(u8, index)),
584 .sub => set.removeFeature(@intCast(u8, index)),
585 }
586 break;
587 }
588 }
589 }
590 return Target.CpuFeatures{ .features = set };
591}
592
542593// ABI warning
543export fn stage2_cmd_targets() c_int {
544 @import("print_targets.zig").cmdTargets(
545 std.heap.c_allocator,
546 &[0][]u8{},
547 &std.io.getStdOut().outStream().stream,
548 ) catch |err| {
594export fn stage2_cmd_targets(zig_triple: [*:0]const u8) c_int {
595 cmdTargets(zig_triple) catch |err| {
549596 std.debug.warn("unable to list targets: {}\n", .{@errorName(err)});
550597 return -1;
551598 };
552599 return 0;
553600}
554601
602fn cmdTargets(zig_triple: [*:0]const u8) !void {
603 var target = try Target.parse(mem.toSliceConst(u8, zig_triple));
604 target.Cross.cpu_features = blk: {
605 const llvm = @import("llvm.zig");
606 const llvm_cpu_name = llvm.GetHostCPUName();
607 const llvm_cpu_features = llvm.GetNativeFeatures();
608 break :blk try cpuFeaturesFromLLVM(target.Cross.arch, llvm_cpu_name, llvm_cpu_features);
609 };
610 return @import("print_targets.zig").cmdTargets(
611 std.heap.c_allocator,
612 &[0][]u8{},
613 &std.io.getStdOut().outStream().stream,
614 target,
615 );
616}
617
555618const Stage2CpuFeatures = struct {
556619 allocator: *mem.Allocator,
557620 cpu_features: Target.CpuFeatures,
......@@ -588,49 +651,17 @@ const Stage2CpuFeatures = struct {
588651 fn createFromLLVM(
589652 allocator: *mem.Allocator,
590653 zig_triple: [*:0]const u8,
591 llvm_cpu_name_z: [*:0]const u8,
592 llvm_cpu_features: [*:0]const u8,
654 llvm_cpu_name_z: ?[*:0]const u8,
655 llvm_cpu_features: ?[*:0]const u8,
593656 ) !*Self {
594657 const target = try Target.parse(mem.toSliceConst(u8, zig_triple));
595658 const arch = target.Cross.arch;
596 const llvm_cpu_name = mem.toSliceConst(u8, llvm_cpu_name_z);
597
598 for (arch.allCpus()) |cpu| {
599 const this_llvm_name = cpu.llvm_name orelse continue;
600 if (mem.eql(u8, this_llvm_name, llvm_cpu_name)) {
601 return createFromCpu(allocator, arch, cpu);
602 }
603 }
604
605 var set = arch.baselineFeatures();
606 var it = mem.tokenize(mem.toSliceConst(u8, llvm_cpu_features), ",");
607 while (it.next()) |decorated_llvm_feat| {
608 var op: enum {
609 add,
610 sub,
611 } = undefined;
612 var llvm_feat: []const u8 = undefined;
613 if (mem.startsWith(u8, decorated_llvm_feat, "+")) {
614 op = .add;
615 llvm_feat = decorated_llvm_feat[1..];
616 } else if (mem.startsWith(u8, decorated_llvm_feat, "-")) {
617 op = .sub;
618 llvm_feat = decorated_llvm_feat[1..];
619 } else {
620 return error.InvalidLlvmCpuFeaturesFormat;
621 }
622 for (arch.allFeaturesList()) |feature, index| {
623 const this_llvm_name = feature.llvm_name orelse continue;
624 if (mem.eql(u8, llvm_feat, this_llvm_name)) {
625 switch (op) {
626 .add => set.addFeature(@intCast(u8, index)),
627 .sub => set.removeFeature(@intCast(u8, index)),
628 }
629 break;
630 }
631 }
659 const cpu_features = try cpuFeaturesFromLLVM(arch, llvm_cpu_name_z, llvm_cpu_features);
660 switch (cpu_features) {
661 .baseline => return createBaseline(allocator),
662 .cpu => |cpu| return createFromCpu(allocator, arch, cpu),
663 .features => |features| return createFromCpuFeatures(allocator, arch, features),
632664 }
633 return createFromCpuFeatures(allocator, arch, set);
634665 }
635666
636667 fn createFromCpu(allocator: *mem.Allocator, arch: Target.Arch, cpu: *const Target.Cpu) !*Self {
......@@ -823,8 +854,8 @@ export fn stage2_cpu_features_baseline(result: **Stage2CpuFeatures) Error {
823854export fn stage2_cpu_features_llvm(
824855 result: **Stage2CpuFeatures,
825856 zig_triple: [*:0]const u8,
826 llvm_cpu_name: [*:0]const u8,
827 llvm_cpu_features: [*:0]const u8,
857 llvm_cpu_name: ?[*:0]const u8,
858 llvm_cpu_features: ?[*:0]const u8,
828859) Error {
829860 result.* = Stage2CpuFeatures.createFromLLVM(
830861 std.heap.c_allocator,
src/main.cpp+1-1
......@@ -1372,7 +1372,7 @@ int main(int argc, char **argv) {
13721372 return main_exit(root_progress_node, EXIT_SUCCESS);
13731373 }
13741374 case CmdTargets:
1375 return stage2_cmd_targets();
1375 return stage2_cmd_targets(buf_ptr(&zig_triple_buf));
13761376 case CmdNone:
13771377 return print_full_usage(arg0, stderr, EXIT_FAILURE);
13781378 }
src/userland.cpp+1-1
......@@ -141,7 +141,7 @@ void stage2_cpu_features_get_builtin_str(const Stage2CpuFeatures *cpu_features,
141141 *len = strlen(cpu_features->builtin_str);
142142}
143143
144int stage2_cmd_targets(void) {
144int stage2_cmd_targets(const char *zig_triple) {
145145 const char *msg = "stage0 called stage2_cmd_targets";
146146 stage2_panic(msg, strlen(msg));
147147}
src/userland.h+1-1
......@@ -213,7 +213,7 @@ ZIG_EXTERN_C void stage2_cpu_features_get_cache_hash(const struct Stage2CpuFeatu
213213 const char **ptr, size_t *len);
214214
215215// ABI warning
216ZIG_EXTERN_C int stage2_cmd_targets(void);
216ZIG_EXTERN_C int stage2_cmd_targets(const char *zig_triple);
217217
218218
219219#endif