make fastcall-inreg and riscv64-lp64-lp64f-lp64d-abi tests able to run on any host platform (with the right llvm components)

Author: erikdesjardins

src/test/codegen/fastcall-inreg.rs

@@ -2,52 +2,17 @@
 // as "inreg" like the C/C++ compilers for the platforms.
 // x86 only.
 
-// ignore-aarch64
-// ignore-aarch64_be
-// ignore-arm
-// ignore-armeb
-// ignore-avr
-// ignore-bpfel
-// ignore-bpfeb
-// ignore-hexagon
-// ignore-mips
-// ignore-mips64
-// ignore-msp430
-// ignore-powerpc64
-// ignore-powerpc64le
-// ignore-powerpc
-// ignore-r600
-// ignore-riscv64
-// ignore-amdgcn
-// ignore-sparc
-// ignore-sparc64
-// ignore-sparcv9
-// ignore-sparcel
-// ignore-s390x
-// ignore-tce
-// ignore-thumb
-// ignore-thumbeb
-// ignore-x86_64
-// ignore-xcore
-// ignore-nvptx
-// ignore-nvptx64
-// ignore-le32
-// ignore-le64
-// ignore-amdil
-// ignore-amdil64
-// ignore-hsail
-// ignore-hsail64
-// ignore-spir
-// ignore-spir64
-// ignore-kalimba
-// ignore-shave
-// ignore-wasm32
-// ignore-wasm64
-// ignore-emscripten
-
-// compile-flags: -C no-prepopulate-passes
+// compile-flags: --target i686-unknown-linux-gnu -C no-prepopulate-passes
+// needs-llvm-components: x86
 
 #![crate_type = "lib"]
+#![no_core]
+#![feature(no_core, lang_items)]
+
+#[lang = "sized"]
+trait Sized {}
+#[lang = "copy"]
+trait Copy {}
 
 pub mod tests {
     // CHECK: @f1(i32 inreg %_1, i32 inreg %_2, i32 %_3)

src/test/codegen/riscv-abi/riscv64-lp64-lp64f-lp64d-abi.rs

@@ -1,10 +1,16 @@
-//
-// compile-flags: -C no-prepopulate-passes
-// only-riscv64
-// only-linux
+// compile-flags: --target riscv64gc-unknown-linux-gnu -C no-prepopulate-passes
+// needs-llvm-components: riscv
+
 #![crate_type = "lib"]
+#![no_core]
+#![feature(no_core, lang_items)]
 #![allow(improper_ctypes)]
 
+#[lang = "sized"]
+trait Sized {}
+#[lang = "copy"]
+trait Copy {}
+
 // CHECK: define void @f_void()
 #[no_mangle]
 pub extern "C" fn f_void() {}
@@ -70,8 +76,6 @@ pub struct Tiny {
 // CHECK: define void @f_agg_tiny(i64 %0)
 #[no_mangle]
 pub extern "C" fn f_agg_tiny(mut e: Tiny) {
-    e.a += e.b;
-    e.c += e.d;
 }
 
 // CHECK: define i64 @f_agg_tiny_ret()
@@ -89,14 +93,12 @@ pub struct Small {
 // CHECK: define void @f_agg_small([2 x i64] %0)
 #[no_mangle]
 pub extern "C" fn f_agg_small(mut x: Small) {
-    x.a += unsafe { *x.b };
-    x.b = &mut x.a;
 }
 
 // CHECK: define [2 x i64] @f_agg_small_ret()
 #[no_mangle]
 pub extern "C" fn f_agg_small_ret() -> Small {
-    Small { a: 1, b: core::ptr::null_mut() }
+    Small { a: 1, b: 0 as *mut _ }
 }
 
 #[repr(C)]
@@ -107,7 +109,6 @@ pub struct SmallAligned {
 // CHECK: define void @f_agg_small_aligned(i128 %0)
 #[no_mangle]
 pub extern "C" fn f_agg_small_aligned(mut x: SmallAligned) {
-    x.a += x.a;
 }
 
 #[repr(C)]
@@ -121,7 +122,6 @@ pub struct Large {
 // CHECK: define void @f_agg_large(%Large* {{.*}}%x)
 #[no_mangle]
 pub extern "C" fn f_agg_large(mut x: Large) {
-    x.a = x.b + x.c + x.d;
 }
 
 // CHECK: define void @f_agg_large_ret(%Large* {{.*}}sret{{.*}}, i32 signext %i, i8 signext %j)
@@ -172,7 +172,7 @@ pub unsafe extern "C" fn f_va_caller() {
         4.0f64,
         5.0f64,
         Tiny { a: 1, b: 2, c: 3, d: 4 },
-        Small { a: 10, b: core::ptr::null_mut() },
+        Small { a: 10, b: 0 as *mut _ },
         SmallAligned { a: 11 },
         Large { a: 12, b: 13, c: 14, d: 15 },
     );