[llvm] [MC][RISCV][LoongArch] Add AlignFragment size if layout is available and not need insert nops (PR #76552)

[Fangrui Song via llvm-commits]

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@@ -47,3 +51,28 @@ G2:
 # RELAX: 0x1C R_RISCV_SUB8 .L1 0x0
 # RELAX: 0x1D R_RISCV_ADD8 G2 0x0
 # RELAX: 0x1D R_RISCV_SUB8 G1 0x0
+
+.dword .L3-.L2
+.dword G3-G2
+.word .L3-.L2
+.word G3-G2
+.half .L3-.L2
+.half G3-G2
+.byte .L3-.L2
+.byte G3-G2
+# RELAX: 0x1E R_RISCV_ADD64 .L3 0x0
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MaskRay wrote:

Add `-NEXT` whenever applicable

https://github.com/llvm/llvm-project/pull/76552