fix `compiler_rt` linking failure on `x86_64` (#2163)

- minor code tweaks

4 files changed, 34 insertions, 56 deletions

diff --git a/src/bun.zig b/src/bun.zig
index df3d1a72f..17a234d5d 100644
--- a/src/bun.zig
+++ b/src/bun.zig
@@ -386,7 +386,7 @@ pub inline fn range(comptime min: anytype, comptime max: anytype) [max - min]usi
 
 pub fn copy(comptime Type: type, dest: []Type, src: []const Type) void {
     if (comptime Environment.allow_assert) std.debug.assert(dest.len >= src.len);
-    if (src.ptr == dest.ptr) return;
+    if (@ptrToInt(src.ptr) == @ptrToInt(dest.ptr)) return;
 
     var input: []const u8 = std.mem.sliceAsBytes(src);
     var output: []u8 = std.mem.sliceAsBytes(dest);
diff --git a/src/http_client_async.zig b/src/http_client_async.zig
index 7060c3ed2..41684acde 100644
--- a/src/http_client_async.zig
+++ b/src/http_client_async.zig
@@ -1057,7 +1057,7 @@ pub fn hashHeaderName(name: string) u64 {
     while (remain.len > 0) {
         const end = @min(hasher.buf.len, remain.len);
 
-        hasher.update(strings.copyLowercase(remain[0..end], &buf));
+        hasher.update(strings.copyLowercaseIfNeeded(remain[0..end], &buf));
         remain = remain[end..];
     }
 
diff --git a/src/install/lockfile.zig b/src/install/lockfile.zig
index c7009c57b..4e604fca5 100644
--- a/src/install/lockfile.zig
+++ b/src/install/lockfile.zig
@@ -1590,23 +1590,26 @@ pub const StringBuilder = struct {
 
     pub inline fn count(this: *StringBuilder, slice: string) void {
         if (String.canInline(slice)) return;
-        return countWithHash(this, slice, String.Builder.stringHash(slice));
+        this._countWithHash(slice, String.Builder.stringHash(slice));
     }
 
     pub inline fn countWithHash(this: *StringBuilder, slice: string, hash: u64) void {
         if (String.canInline(slice)) return;
+        this._countWithHash(slice, hash);
+    }
+
+    inline fn _countWithHash(this: *StringBuilder, slice: string, hash: u64) void {
         if (!this.lockfile.string_pool.contains(hash)) {
             this.cap += slice.len;
         }
     }
 
     pub fn allocatedSlice(this: *StringBuilder) []const u8 {
-        if (this.ptr == null) return "";
-        return this.ptr.?[0..this.cap];
+        return if (this.ptr) |ptr| ptr[0..this.cap] else "";
     }
 
     pub fn clamp(this: *StringBuilder) void {
-        std.debug.assert(this.cap >= this.len);
+        if (comptime Environment.allow_assert) std.debug.assert(this.cap >= this.len);
 
         const excess = this.cap - this.len;
 
@@ -1631,15 +1634,11 @@ pub const StringBuilder = struct {
     // SlicedString is not supported due to inline strings.
     pub fn appendWithoutPool(this: *StringBuilder, comptime Type: type, slice: string, hash: u64) Type {
         if (String.canInline(slice)) {
-            switch (Type) {
-                String => {
-                    return String.init(this.lockfile.buffers.string_bytes.items, slice);
-                },
-                ExternalString => {
-                    return ExternalString.init(this.lockfile.buffers.string_bytes.items, slice, hash);
-                },
+            return switch (Type) {
+                String => String.init(this.lockfile.buffers.string_bytes.items, slice),
+                ExternalString => ExternalString.init(this.lockfile.buffers.string_bytes.items, slice, hash),
                 else => @compileError("Invalid type passed to StringBuilder"),
-            }
+            };
         }
         if (comptime Environment.allow_assert) {
             std.debug.assert(this.len <= this.cap); // didn't count everything
@@ -1652,28 +1651,20 @@ pub const StringBuilder = struct {
 
         if (comptime Environment.allow_assert) std.debug.assert(this.len <= this.cap);
 
-        switch (Type) {
-            String => {
-                return String.init(this.lockfile.buffers.string_bytes.items, final_slice);
-            },
-            ExternalString => {
-                return ExternalString.init(this.lockfile.buffers.string_bytes.items, final_slice, hash);
-            },
+        return switch (Type) {
+            String => String.init(this.lockfile.buffers.string_bytes.items, final_slice),
+            ExternalString => ExternalString.init(this.lockfile.buffers.string_bytes.items, final_slice, hash),
             else => @compileError("Invalid type passed to StringBuilder"),
-        }
+        };
     }
 
     pub fn appendWithHash(this: *StringBuilder, comptime Type: type, slice: string, hash: u64) Type {
         if (String.canInline(slice)) {
-            switch (Type) {
-                String => {
-                    return String.init(this.lockfile.buffers.string_bytes.items, slice);
-                },
-                ExternalString => {
-                    return ExternalString.init(this.lockfile.buffers.string_bytes.items, slice, hash);
-                },
+            return switch (Type) {
+                String => String.init(this.lockfile.buffers.string_bytes.items, slice),
+                ExternalString => ExternalString.init(this.lockfile.buffers.string_bytes.items, slice, hash),
                 else => @compileError("Invalid type passed to StringBuilder"),
-            }
+            };
         }
 
         if (comptime Environment.allow_assert) {
@@ -1692,18 +1683,14 @@ pub const StringBuilder = struct {
 
         if (comptime Environment.allow_assert) std.debug.assert(this.len <= this.cap);
 
-        switch (Type) {
-            String => {
-                return string_entry.value_ptr.*;
-            },
-            ExternalString => {
-                return ExternalString{
-                    .value = string_entry.value_ptr.*,
-                    .hash = hash,
-                };
+        return switch (Type) {
+            String => string_entry.value_ptr.*,
+            ExternalString => .{
+                .value = string_entry.value_ptr.*,
+                .hash = hash,
             },
             else => @compileError("Invalid type passed to StringBuilder"),
-        }
+        };
     }
 };
 
diff --git a/src/string_immutable.zig b/src/string_immutable.zig
index ee65d1224..ea81de06c 100644
--- a/src/string_immutable.zig
+++ b/src/string_immutable.zig
@@ -370,7 +370,7 @@ pub fn copyLowercase(in: string, out: []u8) string {
     var in_slice = in;
     var out_slice = out;
 
-    begin: while (in_slice.len > 0) {
+    begin: while (true) {
         for (in_slice, 0..) |c, i| {
             switch (c) {
                 'A'...'Z' => {
@@ -393,18 +393,17 @@ pub fn copyLowercase(in: string, out: []u8) string {
 }
 
 pub fn copyLowercaseIfNeeded(in: string, out: []u8) string {
-    var in_slice: string = in;
-    var out_slice: []u8 = out[0..in.len];
+    var in_slice = in;
+    var out_slice = out;
     var any = false;
 
-    begin: while (out_slice.len > 0) {
+    begin: while (true) {
         for (in_slice, 0..) |c, i| {
             switch (c) {
                 'A'...'Z' => {
-                    @memcpy(out_slice.ptr, in_slice.ptr, i);
+                    bun.copy(u8, out_slice, in_slice[0..i]);
                     out_slice[i] = std.ascii.toLower(c);
                     const end = i + 1;
-                    if (end >= out_slice.len) break :begin;
                     in_slice = in_slice[end..];
                     out_slice = out_slice[end..];
                     any = true;
@@ -414,19 +413,11 @@ pub fn copyLowercaseIfNeeded(in: string, out: []u8) string {
             }
         }
 
-        if (!any) {
-            return in;
-        }
-
-        @memcpy(out_slice.ptr, in_slice.ptr, in_slice.len);
+        if (any) bun.copy(u8, out_slice, in_slice);
         break :begin;
     }
 
-    if (!any) {
-        return in;
-    }
-
-    return out[0..in.len];
+    return if (any) out[0..in.len] else in;
 }
 
 test "indexOf" {