From 95417948d028cd57e482cdfd7264611254a13d39 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alex=20R=C3=B8nne=20Petersen?= <alex@alexrp.com>
Date: Sat, 4 Oct 2025 20:41:26 +0200
Subject: [PATCH] test: remove ad-hoc nvptx tests

These were just testing random things in the LLVM NVPTX backend. That's not
really our job.
---
 test/cases.zig |   1 -
 test/nvptx.zig | 105 -------------------------------------------------
 2 files changed, 106 deletions(-)
 delete mode 100644 test/nvptx.zig

diff --git a/test/cases.zig b/test/cases.zig
index 2c51078abd..834855099e 100644
--- a/test/cases.zig
+++ b/test/cases.zig
@@ -12,5 +12,4 @@ pub const BuildOptions = struct {
 pub fn addCases(cases: *Cases, build_options: BuildOptions, b: *std.Build) !void {
     try @import("compile_errors.zig").addCases(cases, b);
     try @import("llvm_targets.zig").addCases(cases, build_options, b);
-    try @import("nvptx.zig").addCases(cases, b);
 }
diff --git a/test/nvptx.zig b/test/nvptx.zig
deleted file mode 100644
index 75e211110c..0000000000
--- a/test/nvptx.zig
+++ /dev/null
@@ -1,105 +0,0 @@
-const std = @import("std");
-const Cases = @import("src/Cases.zig");
-
-pub fn addCases(ctx: *Cases, b: *std.Build) !void {
-    const target = b.resolveTargetQuery(.{
-        .cpu_arch = .nvptx64,
-        .os_tag = .cuda,
-    });
-
-    {
-        var case = addPtx(ctx, target, "simple addition and subtraction");
-
-        case.addCompile(
-            \\fn add(a: i32, b: i32) i32 {
-            \\    return a + b;
-            \\}
-            \\
-            \\pub export fn add_and_substract(a: i32, out: *i32) callconv(.kernel) void {
-            \\    const x = add(a, 7);
-            \\    var y = add(2, 0);
-            \\    y -= x;
-            \\    out.* = y;
-            \\}
-        );
-    }
-
-    {
-        var case = addPtx(ctx, target, "read special registers");
-
-        case.addCompile(
-            \\fn threadIdX() u32 {
-            \\    return asm ("mov.u32 \t%[r], %tid.x;"
-            \\       : [r] "=r" (-> u32),
-            \\    );
-            \\}
-            \\
-            \\pub export fn special_reg(a: []const i32, out: []i32) callconv(.kernel) void {
-            \\    const i = threadIdX();
-            \\    out[i] = a[i] + 7;
-            \\}
-        );
-    }
-
-    {
-        var case = addPtx(ctx, target, "address spaces");
-
-        case.addCompile(
-            \\var x: i32 addrspace(.global) = 0;
-            \\
-            \\pub export fn increment(out: *i32) callconv(.kernel) void {
-            \\    x += 1;
-            \\    out.* = x;
-            \\}
-        );
-    }
-
-    {
-        var case = addPtx(ctx, target, "reduce in shared mem");
-        case.addCompile(
-            \\fn threadIdX() u32 {
-            \\    return asm ("mov.u32 \t%[r], %tid.x;"
-            \\       : [r] "=r" (-> u32),
-            \\    );
-            \\}
-            \\
-            \\ var _sdata: [1024]f32 addrspace(.shared) = undefined;
-            \\ pub export fn reduceSum(d_x: []const f32, out: *f32) callconv(.kernel) void {
-            \\     var sdata: *addrspace(.generic) [1024]f32 = @addrSpaceCast(&_sdata);
-            \\     const tid: u32 = threadIdX();
-            \\     var sum = d_x[tid];
-            \\     sdata[tid] = sum;
-            \\     asm volatile ("bar.sync \t0;");
-            \\     var s: u32 = 512;
-            \\     while (s > 0) : (s = s >> 1) {
-            \\         if (tid < s) {
-            \\             sum += sdata[tid + s];
-            \\             sdata[tid] = sum;
-            \\         }
-            \\         asm volatile ("bar.sync \t0;");
-            \\     }
-            \\
-            \\     if (tid == 0) {
-            \\         out.* = sum;
-            \\     }
-            \\ }
-        );
-    }
-}
-
-fn addPtx(ctx: *Cases, target: std.Build.ResolvedTarget, name: []const u8) *Cases.Case {
-    ctx.cases.append(.{
-        .name = name,
-        .target = target,
-        .files = .init(ctx.arena),
-        .case = null,
-        .output_mode = .Obj,
-        .deps = .init(ctx.arena),
-        .link_libc = false,
-        .emit_bin = false,
-        .backend = .llvm,
-        // Bug in Debug mode
-        .optimize_mode = .ReleaseSafe,
-    }) catch @panic("out of memory");
-    return &ctx.cases.items[ctx.cases.items.len - 1];
-}