!! (WIP) remove i586 target checks

Author: Zalathar

src/tools/compiletest/src/directives/directive_names.rs

@@ -70,6 +70,7 @@ pub(crate) const KNOWN_DIRECTIVE_NAMES: &[&str] = &[
     "ignore-gnu",
     "ignore-haiku",
     "ignore-horizon",
+    "ignore-i586",
     "ignore-i686-pc-windows-gnu",
     "ignore-i686-pc-windows-msvc",
     "ignore-illumos",

tests/ui/abi/homogenous-floats-target-feature-mixup.rs

@@ -7,6 +7,7 @@
 //@ run-pass
 //@ needs-subprocess
 //@ ignore-backends: gcc
+//@ ignore-i586 (no SSE2)
 
 #![allow(overflowing_literals)]
 #![allow(unused_variables)]
@@ -19,16 +20,6 @@ fn main() {
         return test::main(&level)
     }
 
-    match std::env::var("TARGET") {
-        Ok(s) => {
-            // Skip this tests on i586-unknown-linux-gnu where sse2 is disabled
-            if s.contains("i586") {
-                return
-            }
-        }
-        Err(_) => return,
-    }
-
     let me = env::current_exe().unwrap();
     for level in ["sse", "avx", "avx512"].iter() {
         let status = Command::new(&me).arg(level).status().unwrap();

tests/ui/target-feature/target-feature-detection.rs

@@ -2,22 +2,12 @@
 //! specifically `sse2` on x86/x86_64 platforms, and correctly reports absent features.
 
 //@ run-pass
+//@ ignore-i586 (no SSE2)
 
 #![allow(stable_features)]
 #![feature(cfg_target_feature)]
 
-use std::env;
-
 fn main() {
-    match env::var("TARGET") {
-        Ok(s) => {
-            // Skip this tests on i586-unknown-linux-gnu where sse2 is disabled
-            if s.contains("i586") {
-                return;
-            }
-        }
-        Err(_) => return,
-    }
     if cfg!(any(target_arch = "x86", target_arch = "x86_64")) {
         assert!(
             cfg!(target_feature = "sse2"),