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For the lui and auipc relaxations, since the symbol value of an undefined weak symbol is always be zero, we can optimize the patterns into a single LI/MV/ADDI instruction. bfd/ * elfnn-riscv.c (riscv_pcgp_hi_reloc): Add new field undefined_weak. (riscv_record_pcgp_hi_reloc): New parameter undefined_weak. Set undefined_weak field from it. (relax_func_t): New parameter undefined_weak. (_bfd_riscv_relax_call): New ignored parameter undefined_weak. (_bfd_riscv_relax_tls_le): Likewise. (_bfd_riscv_relax_align): Likewise. (_bfd_riscv_relax_delete): Likewise. (_bfd_riscv_relax_lui): New parameter undefined_weak. If true, allow relaxing. For LO12* relocs, set rs1 to x0 when undefined_weak. (_bfd_riscv_relax_pc): New parameter undefined_weak. For LO12* relocs, set undefined_weak from hi_reloc. If true, allow relaxing. For LO12* relocs, set rs1 to x0 when undefined_weak and change to non-pcrel reloc. (_bfd_riscv_relax_section): New local undefined_weak. Set for undef weak relocs that can be relaxed. Pass to relax_func call. ld/ * testsuite/ld-riscv-elf/weakref32.s: Add relaxable undef weak code. * testsuite/ld-riscv-elf/weakref64.s: Likewise. * testsuite/ld-riscv-elf/weakref32.d: Updated. * testsuite/ld-riscv-elf/weakref64.d: Updated. |
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| c-lui-2.d | ||
| c-lui-2.ld | ||
| c-lui-2.s | ||
| c-lui.d | ||
| c-lui.s | ||
| disas-jalr.d | ||
| disas-jalr.s | ||
| gp-test-lib.sd | ||
| gp-test.s | ||
| gp-test.sd | ||
| ld-riscv-elf.exp | ||
| pcrel-lo-addend-2.d | ||
| pcrel-lo-addend-2.s | ||
| pcrel-lo-addend.d | ||
| pcrel-lo-addend.s | ||
| weakref32.d | ||
| weakref32.s | ||
| weakref64.d | ||
| weakref64.s | ||
| weakref.ld | ||