Add sanity test for llvm-bolt

Test that instrumentation and optimization don't generate errors,
to prevent issues like https://bugzilla.redhat.com/show_bug.cgi?id=2344830.

tests/bolt-sanity/main.fmf

@@ -0,0 +1,15 @@
+summary: Sanity check that llvm-bolt works
+tier: 1
+
+adjust+:
+  - because: "llvm-bolt is available for Fedora, not RHEL/CentOS"
+    when: distro != fedora
+    enabled: false
+
+  - because: "We only ship llvm-bolt in snapshots for fedora 41 and newer"
+    when: snapshot is defined and distro < fedora-41
+    enabled: false
+
+require+:
+  - llvm-bolt
+  - clang

tests/bolt-sanity/test.sh

@@ -0,0 +1,8 @@
+#!/bin/sh -eux
+
+echo "int main() { return 0; }" > test.c
+clang -Wl,--emit-relocs test.c
+llvm-bolt a.out -instrument -o a.instrumented.out
+./a.instrumented.out
+llvm-bolt a.out -data /tmp/prof.fdata -o a.bolt.out
+./a.bolt.out