Replace trap_unimplemented calls with codegen_panic_nounwind

This will show a backtrace. Also added a reference to
#171 in the unimplemented intrinsic
error message.

Author: bjorn3

src/intrinsics/llvm.rs

@@ -66,7 +66,12 @@ pub(crate) fn codegen_llvm_intrinsic_call<'tcx>(
             fx.tcx
                 .dcx()
                 .warn(format!("unsupported llvm intrinsic {}; replacing with trap", intrinsic));
-            crate::trap::trap_unimplemented(fx, intrinsic);
+            let msg = format!(
+                "{intrinsic} is not yet supported.\n\
+                 See https://github.com/rust-lang/rustc_codegen_cranelift/issues/171\n\
+                 Please open an issue at https://github.com/rust-lang/rustc_codegen_cranelift/issues"
+            );
+            crate::base::codegen_panic_nounwind(fx, &msg, None);
             return;
         }
     }

src/intrinsics/llvm_aarch64.rs

@@ -507,7 +507,12 @@ pub(crate) fn codegen_aarch64_llvm_intrinsic_call<'tcx>(
                 "unsupported AArch64 llvm intrinsic {}; replacing with trap",
                 intrinsic
             ));
-            crate::trap::trap_unimplemented(fx, intrinsic);
+            let msg = format!(
+                "{intrinsic} is not yet supported.\n\
+                 See https://github.com/rust-lang/rustc_codegen_cranelift/issues/171\n\
+                 Please open an issue at https://github.com/rust-lang/rustc_codegen_cranelift/issues"
+            );
+            crate::base::codegen_panic_nounwind(fx, &msg, None);
             return;
         }
     }

src/intrinsics/llvm_x86.rs

@@ -1316,7 +1316,12 @@ pub(crate) fn codegen_x86_llvm_intrinsic_call<'tcx>(
             fx.tcx
                 .dcx()
                 .warn(format!("unsupported x86 llvm intrinsic {}; replacing with trap", intrinsic));
-            crate::trap::trap_unimplemented(fx, intrinsic);
+            let msg = format!(
+                "{intrinsic} is not yet supported.\n\
+                 See https://github.com/rust-lang/rustc_codegen_cranelift/issues/171\n\
+                 Please open an issue at https://github.com/rust-lang/rustc_codegen_cranelift/issues"
+            );
+            crate::base::codegen_panic_nounwind(fx, &msg, None);
             return;
         }
     }

src/intrinsics/mod.rs

@@ -801,7 +801,11 @@ fn codegen_regular_intrinsic_call<'tcx>(
                     // FIXME implement 128bit atomics
                     if fx.tcx.is_compiler_builtins(LOCAL_CRATE) {
                         // special case for compiler-builtins to avoid having to patch it
-                        crate::trap::trap_unimplemented(fx, "128bit atomics not yet supported");
+                        crate::base::codegen_panic_nounwind(
+                            fx,
+                            "128bit atomics not yet supported",
+                            None,
+                        );
                         return Ok(());
                     } else {
                         fx.tcx
@@ -832,7 +836,11 @@ fn codegen_regular_intrinsic_call<'tcx>(
                     // FIXME implement 128bit atomics
                     if fx.tcx.is_compiler_builtins(LOCAL_CRATE) {
                         // special case for compiler-builtins to avoid having to patch it
-                        crate::trap::trap_unimplemented(fx, "128bit atomics not yet supported");
+                        crate::base::codegen_panic_nounwind(
+                            fx,
+                            "128bit atomics not yet supported",
+                            None,
+                        );
                         return Ok(());
                     } else {
                         fx.tcx

src/lib.rs

@@ -76,7 +76,6 @@ mod optimize;
 mod pointer;
 mod pretty_clif;
 mod toolchain;
-mod trap;
 mod unsize;
 mod unwind_module;
 mod value_and_place;