disable f128 compiler_rt tests failing on windows

These were never working with native CPU features. In this branch,
we fix native CPU features not being enabled on Windows, and regress
f128 language features. In the llvm10 branch, all this is fixed,
and the tests are re-enabled.

lib/std/special/compiler_rt/addXf3_test.zig

@@ -31,6 +31,10 @@ fn test__addtf3(a: f128, b: f128, expected_hi: u64, expected_lo: u64) void {
 }
 
 test "addtf3" {
+    if (@import("std").Target.current.isWindows()) {
+        // TODO https://github.com/ziglang/zig/issues/508
+        return error.SkipZigTest;
+    }
     test__addtf3(qnan128, 0x1.23456789abcdefp+5, 0x7fff800000000000, 0x0);
 
     // NaN + any = NaN
@@ -71,6 +75,10 @@ fn test__subtf3(a: f128, b: f128, expected_hi: u64, expected_lo: u64) void {
 }
 
 test "subtf3" {
+    if (@import("std").Target.current.isWindows()) {
+        // TODO https://github.com/ziglang/zig/issues/508
+        return error.SkipZigTest;
+    }
     // qNaN - any = qNaN
     test__subtf3(qnan128, 0x1.23456789abcdefp+5, 0x7fff800000000000, 0x0);
 

lib/std/special/compiler_rt/fixtfdi_test.zig

@@ -11,6 +11,10 @@ fn test__fixtfdi(a: f128, expected: i64) void {
 }
 
 test "fixtfdi" {
+    if (@import("std").Target.current.isWindows()) {
+        // TODO https://github.com/ziglang/zig/issues/508
+        return error.SkipZigTest;
+    }
     //warn("\n", .{});
     test__fixtfdi(-math.f128_max, math.minInt(i64));
 

lib/std/special/compiler_rt/fixtfsi_test.zig

@@ -11,6 +11,10 @@ fn test__fixtfsi(a: f128, expected: i32) void {
 }
 
 test "fixtfsi" {
+    if (@import("std").Target.current.isWindows()) {
+        // TODO https://github.com/ziglang/zig/issues/508
+        return error.SkipZigTest;
+    }
     //warn("\n", .{});
     test__fixtfsi(-math.f128_max, math.minInt(i32));
 

lib/std/special/compiler_rt/fixtfti_test.zig

@@ -11,6 +11,10 @@ fn test__fixtfti(a: f128, expected: i128) void {
 }
 
 test "fixtfti" {
+    if (@import("std").Target.current.isWindows()) {
+        // TODO https://github.com/ziglang/zig/issues/508
+        return error.SkipZigTest;
+    }
     //warn("\n", .{});
     test__fixtfti(-math.f128_max, math.minInt(i128));
 

lib/std/special/compiler_rt/fixunstfdi_test.zig

@@ -7,6 +7,10 @@ fn test__fixunstfdi(a: f128, expected: u64) void {
 }
 
 test "fixunstfdi" {
+    if (@import("std").Target.current.isWindows()) {
+        // TODO https://github.com/ziglang/zig/issues/508
+        return error.SkipZigTest;
+    }
     test__fixunstfdi(0.0, 0);
 
     test__fixunstfdi(0.5, 0);

lib/std/special/compiler_rt/fixunstfsi_test.zig

@@ -9,6 +9,10 @@ fn test__fixunstfsi(a: f128, expected: u32) void {
 const inf128 = @bitCast(f128, @as(u128, 0x7fff0000000000000000000000000000));
 
 test "fixunstfsi" {
+    if (@import("std").Target.current.isWindows()) {
+        // TODO https://github.com/ziglang/zig/issues/508
+        return error.SkipZigTest;
+    }
     test__fixunstfsi(inf128, 0xffffffff);
     test__fixunstfsi(0, 0x0);
     test__fixunstfsi(0x1.23456789abcdefp+5, 0x24);

lib/std/special/compiler_rt/fixunstfti_test.zig

@@ -9,6 +9,10 @@ fn test__fixunstfti(a: f128, expected: u128) void {
 const inf128 = @bitCast(f128, @as(u128, 0x7fff0000000000000000000000000000));
 
 test "fixunstfti" {
+    if (@import("std").Target.current.isWindows()) {
+        // TODO https://github.com/ziglang/zig/issues/508
+        return error.SkipZigTest;
+    }
     test__fixunstfti(inf128, 0xffffffffffffffffffffffffffffffff);
 
     test__fixunstfti(0.0, 0);

lib/std/special/compiler_rt/floattitf_test.zig

@@ -7,6 +7,10 @@ fn test__floattitf(a: i128, expected: f128) void {
 }
 
 test "floattitf" {
+    if (@import("std").Target.current.isWindows()) {
+        // TODO https://github.com/ziglang/zig/issues/508
+        return error.SkipZigTest;
+    }
     test__floattitf(0, 0.0);
 
     test__floattitf(1, 1.0);

lib/std/special/compiler_rt/floatuntitf_test.zig

@@ -7,6 +7,10 @@ fn test__floatuntitf(a: u128, expected: f128) void {
 }
 
 test "floatuntitf" {
+    if (@import("std").Target.current.isWindows()) {
+        // TODO https://github.com/ziglang/zig/issues/508
+        return error.SkipZigTest;
+    }
     test__floatuntitf(0, 0.0);
 
     test__floatuntitf(1, 1.0);

lib/std/special/compiler_rt/mulXf3_test.zig

@@ -44,6 +44,10 @@ fn makeNaN128(rand: u64) f128 {
     return float_result;
 }
 test "multf3" {
+    if (@import("std").Target.current.isWindows()) {
+        // TODO https://github.com/ziglang/zig/issues/508
+        return error.SkipZigTest;
+    }
     // qNaN * any = qNaN
     test__multf3(qnan128, 0x1.23456789abcdefp+5, 0x7fff800000000000, 0x0);
 

lib/std/special/compiler_rt/truncXfYf2_test.zig

@@ -151,6 +151,10 @@ fn test__trunctfsf2(a: f128, expected: u32) void {
 }
 
 test "trunctfsf2" {
+    if (@import("std").Target.current.isWindows()) {
+        // TODO https://github.com/ziglang/zig/issues/508
+        return error.SkipZigTest;
+    }
     // qnan
     test__trunctfsf2(@bitCast(f128, @as(u128, 0x7fff800000000000 << 64)), 0x7fc00000);
     // nan
@@ -186,6 +190,10 @@ fn test__trunctfdf2(a: f128, expected: u64) void {
 }
 
 test "trunctfdf2" {
+    if (@import("std").Target.current.isWindows()) {
+        // TODO https://github.com/ziglang/zig/issues/508
+        return error.SkipZigTest;
+    }
     // qnan
     test__trunctfdf2(@bitCast(f128, @as(u128, 0x7fff800000000000 << 64)), 0x7ff8000000000000);
     // nan