Rollup merge of #116263 - ferrocene:pa-more-bare-metal-fixes, r=oli-obk

More fixes for running the test suite on a bare metal target

This PR adds more fixes needed to run the test suite on bare metal targets (in this case, without unwinding and with static relocations). There is no CI job exercising tests without unwinds, but I can confirm this worked in Ferrocene's CI.

8 files changed, 17 insertions, 4 deletions

diff --git a/src/tools/compiletest/src/common.rs b/src/tools/compiletest/src/common.rs
index ba273489eb8..0e1bf0c6c2d 100644
--- a/src/tools/compiletest/src/common.rs
+++ b/src/tools/compiletest/src/common.rs
@@ -580,6 +580,8 @@ pub struct TargetCfg {
     pub(crate) sanitizers: Vec<Sanitizer>,
     #[serde(rename = "supports-xray", default)]
     pub(crate) xray: bool,
+    #[serde(default = "default_reloc_model")]
+    pub(crate) relocation_model: String,
 }
 
 impl TargetCfg {
@@ -592,6 +594,10 @@ fn default_os() -> String {
     "none".into()
 }
 
+fn default_reloc_model() -> String {
+    "pic".into()
+}
+
 #[derive(Eq, PartialEq, Clone, Debug, Default, serde::Deserialize)]
 #[serde(rename_all = "kebab-case")]
 pub enum Endian {
diff --git a/src/tools/compiletest/src/header/needs.rs b/src/tools/compiletest/src/header/needs.rs
index 1113721fff6..2b7a4387ceb 100644
--- a/src/tools/compiletest/src/header/needs.rs
+++ b/src/tools/compiletest/src/header/needs.rs
@@ -134,6 +134,11 @@ pub(super) fn handle_needs(
             condition: config.target_cfg().dynamic_linking,
             ignore_reason: "ignored on targets without dynamic linking",
         },
+        Need {
+            name: "needs-relocation-model-pic",
+            condition: config.target_cfg().relocation_model == "pic",
+            ignore_reason: "ignored on targets without PIC relocation model",
+        },
     ];
 
     let (name, comment) = match ln.split_once([':', ' ']) {
diff --git a/tests/incremental/change_crate_dep_kind.rs b/tests/incremental/change_crate_dep_kind.rs
index f518266016e..b9f74340472 100644
--- a/tests/incremental/change_crate_dep_kind.rs
+++ b/tests/incremental/change_crate_dep_kind.rs
@@ -5,6 +5,7 @@
 // needs-unwind
 // revisions:cfail1 cfail2
 // compile-flags: -Z query-dep-graph -Cpanic=unwind
+// needs-unwind
 // build-pass (FIXME(62277): could be check-pass?)
 
 #![feature(panic_unwind)]
diff --git a/tests/ui/abi/relocation_model_pic.rs b/tests/ui/abi/relocation_model_pic.rs
index 0cfc44cd09d..cca2e8db74d 100644
--- a/tests/ui/abi/relocation_model_pic.rs
+++ b/tests/ui/abi/relocation_model_pic.rs
@@ -1,7 +1,6 @@
 // run-pass
 // compile-flags: -C relocation-model=pic
-// ignore-emscripten no pic
-// ignore-wasm
+// needs-relocation-model-pic
 
 #![feature(cfg_relocation_model)]
 
diff --git a/tests/ui/panics/short-ice-remove-middle-frames-2.rs b/tests/ui/panics/short-ice-remove-middle-frames-2.rs
index 38a80f8b670..751959f55bb 100644
--- a/tests/ui/panics/short-ice-remove-middle-frames-2.rs
+++ b/tests/ui/panics/short-ice-remove-middle-frames-2.rs
@@ -2,6 +2,7 @@
 // run-fail
 // check-run-results
 // exec-env:RUST_BACKTRACE=1
+// needs-unwind
 // ignore-android FIXME #17520
 // ignore-wasm no panic support
 // ignore-openbsd no support for libbacktrace without filename
diff --git a/tests/ui/panics/short-ice-remove-middle-frames-2.run.stderr b/tests/ui/panics/short-ice-remove-middle-frames-2.run.stderr
index 2b648a0cad2..664ebaa4c51 100644
--- a/tests/ui/panics/short-ice-remove-middle-frames-2.run.stderr
+++ b/tests/ui/panics/short-ice-remove-middle-frames-2.run.stderr
@@ -1,4 +1,4 @@
-thread 'main' panicked at $DIR/short-ice-remove-middle-frames-2.rs:56:5:
+thread 'main' panicked at $DIR/short-ice-remove-middle-frames-2.rs:57:5:
 debug!!!
 stack backtrace:
    0: std::panicking::begin_panic
diff --git a/tests/ui/panics/short-ice-remove-middle-frames.rs b/tests/ui/panics/short-ice-remove-middle-frames.rs
index c872084f033..134e13233da 100644
--- a/tests/ui/panics/short-ice-remove-middle-frames.rs
+++ b/tests/ui/panics/short-ice-remove-middle-frames.rs
@@ -2,6 +2,7 @@
 // run-fail
 // check-run-results
 // exec-env:RUST_BACKTRACE=1
+// needs-unwind
 // ignore-android FIXME #17520
 // ignore-wasm no panic support
 // ignore-openbsd no support for libbacktrace without filename
diff --git a/tests/ui/panics/short-ice-remove-middle-frames.run.stderr b/tests/ui/panics/short-ice-remove-middle-frames.run.stderr
index 5b372684096..bc252fde1f6 100644
--- a/tests/ui/panics/short-ice-remove-middle-frames.run.stderr
+++ b/tests/ui/panics/short-ice-remove-middle-frames.run.stderr
@@ -1,4 +1,4 @@
-thread 'main' panicked at $DIR/short-ice-remove-middle-frames.rs:52:5:
+thread 'main' panicked at $DIR/short-ice-remove-middle-frames.rs:53:5:
 debug!!!
 stack backtrace:
    0: std::panicking::begin_panic