cmd/link: add relocs type for mips64x

The race detector of llvm adds four reloc types even with -fPIC

elf.R_MIPS_CALL16
elf.R_MIPS_GPREL32
elf.R_MIPS_64
elf.R_MIPS_GOT_DISP

Change-Id: If73119dcba14ef74395273eb680f52a0aa853217
Reviewed-on: https://go-review.googlesource.com/c/go/+/270297
Trust: Meng Zhuo <[email protected]>
Run-TryBot: Meng Zhuo <[email protected]>
Reviewed-by: Cherry Zhang <[email protected]>
TryBot-Result: Go Bot <[email protected]>

Author: mengzhuo

src/cmd/link/internal/loadelf/ldelf.go

@@ -983,7 +983,11 @@ func relSize(arch *sys.Arch, pn string, elftype uint32) (uint8, error) {
 		MIPS64 | uint32(elf.R_MIPS_GPREL16)<<16,
 		MIPS64 | uint32(elf.R_MIPS_GOT_PAGE)<<16,
 		MIPS64 | uint32(elf.R_MIPS_JALR)<<16,
-		MIPS64 | uint32(elf.R_MIPS_GOT_OFST)<<16:
+		MIPS64 | uint32(elf.R_MIPS_GOT_OFST)<<16,
+		MIPS64 | uint32(elf.R_MIPS_CALL16)<<16,
+		MIPS64 | uint32(elf.R_MIPS_GPREL32)<<16,
+		MIPS64 | uint32(elf.R_MIPS_64)<<16,
+		MIPS64 | uint32(elf.R_MIPS_GOT_DISP)<<16:
 		return 4, nil
 
 	case S390X | uint32(elf.R_390_8)<<16: