feat(riscv64,loong64): encode AMO atomics, vector slices and bit ops

Assisted-by: GLM 5.3 Flash
2026-09-20 06:44:51 +02:00
parent ca3fdce0e0
commit de5d9f358e
12 changed files with 2059 additions and 37 deletions
@@ -232,7 +232,10 @@ DATA ·table+0(SB)/8, $42
 }

 // TestLOONG64_errors checks the encoder's error paths: undefined labels,
-// invalid register operands and operand-count mismatches.
+// invalid register operands and operand-count mismatches.  The X0 and
+// AMADDW cases follow the oracle: GOARCH=loong64 go tool asm rejects
+// `BEQZ X0` (the X bank is not an integer register) and the two-register
+// `AMADDW R4, R5` (the AM* family is strictly `val, (addr), result`).
 func TestLOONG64_errors(t *testing.T) {
 	cases := []string{
 		`TEXT ·e(SB), NOSPLIT, $0