llvm/cbe: support slice in `@prefetch`

Closes #16967

1 files changed, 14 insertions, 13 deletions

diff --git a/test/behavior/prefetch.zig b/test/behavior/prefetch.zig
index cd4d8c5aba..d4baa649d0 100644
--- a/test/behavior/prefetch.zig
+++ b/test/behavior/prefetch.zig
@@ -4,27 +4,28 @@ const std = @import("std");
 test "@prefetch()" {
     if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
 
-    var a: u32 = 42;
+    var a: [2]u32 = .{ 42, 42 };
+    var a_len = a.len;
 
     @prefetch(&a, .{});
 
-    @prefetch(&a, .{ .rw = .read, .locality = 3, .cache = .data });
+    @prefetch(&a[0], .{ .rw = .read, .locality = 3, .cache = .data });
     @prefetch(&a, .{ .rw = .read, .locality = 2, .cache = .data });
-    @prefetch(&a, .{ .rw = .read, .locality = 1, .cache = .data });
-    @prefetch(&a, .{ .rw = .read, .locality = 0, .cache = .data });
+    @prefetch(a[0..].ptr, .{ .rw = .read, .locality = 1, .cache = .data });
+    @prefetch(a[0..a_len], .{ .rw = .read, .locality = 0, .cache = .data });
 
-    @prefetch(&a, .{ .rw = .write, .locality = 3, .cache = .data });
+    @prefetch(&a[0], .{ .rw = .write, .locality = 3, .cache = .data });
     @prefetch(&a, .{ .rw = .write, .locality = 2, .cache = .data });
-    @prefetch(&a, .{ .rw = .write, .locality = 1, .cache = .data });
-    @prefetch(&a, .{ .rw = .write, .locality = 0, .cache = .data });
+    @prefetch(a[0..].ptr, .{ .rw = .write, .locality = 1, .cache = .data });
+    @prefetch(a[0..a_len], .{ .rw = .write, .locality = 0, .cache = .data });
 
-    @prefetch(&a, .{ .rw = .read, .locality = 3, .cache = .instruction });
+    @prefetch(&a[0], .{ .rw = .read, .locality = 3, .cache = .instruction });
     @prefetch(&a, .{ .rw = .read, .locality = 2, .cache = .instruction });
-    @prefetch(&a, .{ .rw = .read, .locality = 1, .cache = .instruction });
-    @prefetch(&a, .{ .rw = .read, .locality = 0, .cache = .instruction });
+    @prefetch(a[0..].ptr, .{ .rw = .read, .locality = 1, .cache = .instruction });
+    @prefetch(a[0..a_len], .{ .rw = .read, .locality = 0, .cache = .instruction });
 
-    @prefetch(&a, .{ .rw = .write, .locality = 3, .cache = .instruction });
+    @prefetch(&a[0], .{ .rw = .write, .locality = 3, .cache = .instruction });
     @prefetch(&a, .{ .rw = .write, .locality = 2, .cache = .instruction });
-    @prefetch(&a, .{ .rw = .write, .locality = 1, .cache = .instruction });
-    @prefetch(&a, .{ .rw = .write, .locality = 0, .cache = .instruction });
+    @prefetch(a[0..].ptr, .{ .rw = .write, .locality = 1, .cache = .instruction });
+    @prefetch(a[0..a_len], .{ .rw = .write, .locality = 0, .cache = .instruction });
 }