Add supported asm types for LoongArch32

Author: heiher

compiler/rustc_target/src/asm/loongarch.rs

@@ -34,10 +34,16 @@ impl LoongArchInlineAsmRegClass {
 
     pub fn supported_types(
         self,
-        _arch: InlineAsmArch,
+        arch: InlineAsmArch,
     ) -> &'static [(InlineAsmType, Option<Symbol>)] {
         match self {
-            Self::reg => types! { _: I8, I16, I32, I64, F32, F64; },
+            Self::reg => {
+                if arch == InlineAsmArch::LoongArch64 {
+                    types! { _: I8, I16, I32, I64, F32, F64; }
+                } else {
+                    types! { _: I8, I16, I32, F32; }
+                }
+            }
             Self::freg => types! { f: F32; d: F64; },
         }
     }

src/doc/unstable-book/src/language-features/asm-experimental-arch.md

@@ -91,6 +91,8 @@ This feature tracks `asm!` and `global_asm!` support for the following architect
 | CSKY         | `freg`                          | None           | `f32`,                                  |
 | SPARC        | `reg`                           | None           | `i8`, `i16`, `i32`, `i64` (SPARC64 only) |
 | SPARC        | `yreg`                          | N/A            | Only clobbers                           |
+| LoongArch32  | `reg`                           | None           | `i8`, `i16`, `i32`, `f32`               |
+| LoongArch32  | `freg`                          | None           | `f32`, `f64`                            |
 
 ## Register aliases