rename "passthrough" → "driver_punt"

- punt when `-E` is supplied
- punt when `-S` is supplied

src-self-hosted/clang_options_data.zig

@@ -4,7 +4,14 @@ usingnamespace @import("clang_options.zig");
 pub const data = blk: { @setEvalBranchQuota(6000); break :blk &[_]CliArg{
 flagpd1("C"),
 flagpd1("CC"),
-flagpd1("E"),
+.{
+    .name = "E",
+    .syntax = .flag,
+    .zig_equivalent = .driver_punt,
+    .pd1 = true,
+    .pd2 = false,
+    .psl = false,
+},
 flagpd1("EB"),
 flagpd1("EL"),
 flagpd1("Eonly"),
@@ -36,7 +43,14 @@ flagpd1("Q"),
 flagpd1("Qn"),
 flagpd1("Qunused-arguments"),
 flagpd1("Qy"),
-flagpd1("S"),
+.{
+    .name = "S",
+    .syntax = .flag,
+    .zig_equivalent = .driver_punt,
+    .pd1 = true,
+    .pd2 = false,
+    .psl = false,
+},
 .{
     .name = "<unknown>",
     .syntax = .flag,
@@ -119,7 +133,7 @@ flagpd1("###"),
 .{
     .name = "E",
     .syntax = .flag,
-    .zig_equivalent = .other,
+    .zig_equivalent = .driver_punt,
     .pd1 = true,
     .pd2 = false,
     .psl = true,
@@ -1127,7 +1141,7 @@ flagpd1("###"),
 .{
     .name = "help",
     .syntax = .flag,
-    .zig_equivalent = .passthrough,
+    .zig_equivalent = .driver_punt,
     .pd1 = true,
     .pd2 = false,
     .psl = true,
@@ -3131,7 +3145,7 @@ sepd1("header-include-file"),
 .{
     .name = "help",
     .syntax = .flag,
-    .zig_equivalent = .passthrough,
+    .zig_equivalent = .driver_punt,
     .pd1 = true,
     .pd2 = true,
     .psl = false,

src-self-hosted/stage2.zig

@@ -1240,7 +1240,7 @@ pub const ClangArgIterator = extern struct {
         positional,
         l,
         ignore,
-        passthrough,
+        driver_punt,
         pic,
         no_pic,
         nostdlib,

src/main.cpp

@@ -630,7 +630,7 @@ static int main0(int argc, char **argv) {
                     break;
                 case Stage2ClangArgIgnore:
                     break;
-                case Stage2ClangArgPassthrough:
+                case Stage2ClangArgDriverPunt:
                     // Never mind what we're doing, just pass the args directly. For example --help.
                     return ZigClang_main(argc, argv);
                 case Stage2ClangArgPIC:

src/stage2.h

@@ -326,7 +326,7 @@ enum Stage2ClangArg {
     Stage2ClangArgPositional,
     Stage2ClangArgL,
     Stage2ClangArgIgnore,
-    Stage2ClangArgPassthrough,
+    Stage2ClangArgDriverPunt,
     Stage2ClangArgPIC,
     Stage2ClangArgNoPIC,
     Stage2ClangArgNoStdLib,

tools/update_clang_options.zig

@@ -44,7 +44,7 @@ const known_options = [_]KnownOpt{
     },
     .{
         .name = "help",
-        .ident = "passthrough",
+        .ident = "driver_punt",
     },
     .{
         .name = "fPIC",
@@ -74,6 +74,14 @@ const known_options = [_]KnownOpt{
         .name = "Wl,",
         .ident = "wl",
     },
+    .{
+        .name = "E",
+        .ident = "driver_punt",
+    },
+    .{
+        .name = "S",
+        .ident = "driver_punt",
+    },
 };
 
 const blacklisted_options = [_][]const u8{};