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binutils-gdb/ld/testsuite/ld-powerpc/tlsld.d

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Correct PowerPC64 local-dynamic TLS linker optimization The linker hardcoded r3 into a local-dynamic to local-exec TLS optimization sequence. This is normally the case since r3 is required as a parameter to (the optimized out) __tls_get_addr call. However, it is possible for a compiler, LLVM in this case, to set up the parameter value in another register then copy it to r3 before the call. When fixing this problem, I noticed that ppc32 had another bug when optimizing away one of the TLS insns to a nop. The patch also tidies a mask used by global-dynamic to initial-exec TLS optimization, to just select the fields needed. Leaving the offset in the instruction wasn't a bug since it will be overwritten anyway. bfd/ * elf64-ppc.c (ppc64_elf_relocate_section): Correct GOT_TLSLD optimization. Tidy mask for GOT_TLSGD optimization. * elf32-ppc.c (ppc_elf_relocate_section): Likewise. Correct location of nop zapping high insn too. ld/testsuite/ * ld-powerpc/tlsld.d, * ld-powerpc/tlsld.s: New test. * ld-powerpc/tlsld32.d, * ld-powerpc/tlsld32.s: New test. * ld-powerpc/powerpc.exp: Run them. Move tocvar and tocnovar.
2015-01-29 08:39:55 +08:00
#source: tlsld.s
#as: -a64
#ld: -melf64ppc
#objdump: -dr
#target: powerpc64*-*-*
.*: file format .*
Disassembly of section \.text:
.*:
.* nop
PowerPC TPREL16_HA/LO reloc optimization In the TLS GD/LD to LE optimization, ld replaces a sequence like addi 3,2,x@got@tlsgd R_PPC64_GOT_TLSGD16 x bl __tls_get_addr(x@tlsgd) R_PPC64_TLSGD x R_PPC64_REL24 __tls_get_addr nop with addis 3,13,x@tprel@ha R_PPC64_TPREL16_HA x addi 3,3,x@tprel@l R_PPC64_TPREL16_LO x nop When the tprel offset is small, this can be further optimized to nop addi 3,13,x@tprel nop bfd/ * elf64-ppc.c (struct ppc_link_hash_table): Add do_tls_opt. (ppc64_elf_tls_optimize): Set it. (ppc64_elf_relocate_section): Nop addis on TPREL16_HA, and convert insn on TPREL16_LO and TPREL16_LO_DS relocs to use r13 when addis would add zero. * elf32-ppc.c (struct ppc_elf_link_hash_table): Add do_tls_opt. (ppc_elf_tls_optimize): Set it. (ppc_elf_relocate_section): Nop addis on TPREL16_HA, and convert insn on TPREL16_LO relocs to use r2 when addis would add zero. gold/ * powerpc.cc (Target_powerpc::Relocate::relocate): Nop addis on TPREL16_HA, and convert insn on TPREL16_LO and TPREL16_LO_DS relocs to use r2/r13 when addis would add zero. ld/ * testsuite/ld-powerpc/tls.s: Add calls with tls markers. * testsuite/ld-powerpc/tls32.s: Likewise. * testsuite/ld-powerpc/powerpc.exp: Run tls marker tests. * testsuite/ld-powerpc/tls.d: Adjust for TPREL16_HA/LO optimization. * testsuite/ld-powerpc/tlsexe.d: Likewise. * testsuite/ld-powerpc/tlsexetoc.d: Likewise. * testsuite/ld-powerpc/tlsld.d: Likewise. * testsuite/ld-powerpc/tlsmark.d: Likewise. * testsuite/ld-powerpc/tlsopt4.d: Likewise. * testsuite/ld-powerpc/tlstoc.d: Likewise.
2017-08-30 19:05:35 +08:00
.* nop
Correct PowerPC64 local-dynamic TLS linker optimization The linker hardcoded r3 into a local-dynamic to local-exec TLS optimization sequence. This is normally the case since r3 is required as a parameter to (the optimized out) __tls_get_addr call. However, it is possible for a compiler, LLVM in this case, to set up the parameter value in another register then copy it to r3 before the call. When fixing this problem, I noticed that ppc32 had another bug when optimizing away one of the TLS insns to a nop. The patch also tidies a mask used by global-dynamic to initial-exec TLS optimization, to just select the fields needed. Leaving the offset in the instruction wasn't a bug since it will be overwritten anyway. bfd/ * elf64-ppc.c (ppc64_elf_relocate_section): Correct GOT_TLSLD optimization. Tidy mask for GOT_TLSGD optimization. * elf32-ppc.c (ppc_elf_relocate_section): Likewise. Correct location of nop zapping high insn too. ld/testsuite/ * ld-powerpc/tlsld.d, * ld-powerpc/tlsld.s: New test. * ld-powerpc/tlsld32.d, * ld-powerpc/tlsld32.s: New test. * ld-powerpc/powerpc.exp: Run them. Move tocvar and tocnovar.
2015-01-29 08:39:55 +08:00
.* mr r3,r29
PowerPC TPREL16_HA/LO reloc optimization In the TLS GD/LD to LE optimization, ld replaces a sequence like addi 3,2,x@got@tlsgd R_PPC64_GOT_TLSGD16 x bl __tls_get_addr(x@tlsgd) R_PPC64_TLSGD x R_PPC64_REL24 __tls_get_addr nop with addis 3,13,x@tprel@ha R_PPC64_TPREL16_HA x addi 3,3,x@tprel@l R_PPC64_TPREL16_LO x nop When the tprel offset is small, this can be further optimized to nop addi 3,13,x@tprel nop bfd/ * elf64-ppc.c (struct ppc_link_hash_table): Add do_tls_opt. (ppc64_elf_tls_optimize): Set it. (ppc64_elf_relocate_section): Nop addis on TPREL16_HA, and convert insn on TPREL16_LO and TPREL16_LO_DS relocs to use r13 when addis would add zero. * elf32-ppc.c (struct ppc_elf_link_hash_table): Add do_tls_opt. (ppc_elf_tls_optimize): Set it. (ppc_elf_relocate_section): Nop addis on TPREL16_HA, and convert insn on TPREL16_LO relocs to use r2 when addis would add zero. gold/ * powerpc.cc (Target_powerpc::Relocate::relocate): Nop addis on TPREL16_HA, and convert insn on TPREL16_LO and TPREL16_LO_DS relocs to use r2/r13 when addis would add zero. ld/ * testsuite/ld-powerpc/tls.s: Add calls with tls markers. * testsuite/ld-powerpc/tls32.s: Likewise. * testsuite/ld-powerpc/powerpc.exp: Run tls marker tests. * testsuite/ld-powerpc/tls.d: Adjust for TPREL16_HA/LO optimization. * testsuite/ld-powerpc/tlsexe.d: Likewise. * testsuite/ld-powerpc/tlsexetoc.d: Likewise. * testsuite/ld-powerpc/tlsld.d: Likewise. * testsuite/ld-powerpc/tlsmark.d: Likewise. * testsuite/ld-powerpc/tlsopt4.d: Likewise. * testsuite/ld-powerpc/tlstoc.d: Likewise.
2017-08-30 19:05:35 +08:00
.* addi r3,r13,4096
PowerPC64 __tls_get_addr sequence optimization There isn't a good reason for ld.bfd to behave differently from gold in the code generated by TLS GD/LD to LE optimization. bfd/ * elf64-ppc.c (ppc64_elf_relocate_section): When optimizing __tls_get_addr call sequences to LE, don't move the addi down to the nop. Replace the bl with addi and leave the nop alone. ld/ * testsuite/ld-powerpc/tls.d: Update. * testsuite/ld-powerpc/tlsexe.d: Update. * testsuite/ld-powerpc/tlsexetoc.d: Update. * testsuite/ld-powerpc/tlsld.d: Update. * testsuite/ld-powerpc/tlsmark.d: Update. * testsuite/ld-powerpc/tlsopt4.d: Update. * testsuite/ld-powerpc/tlstoc.d: Update.
2017-08-30 19:05:09 +08:00
.* nop
Correct PowerPC64 local-dynamic TLS linker optimization The linker hardcoded r3 into a local-dynamic to local-exec TLS optimization sequence. This is normally the case since r3 is required as a parameter to (the optimized out) __tls_get_addr call. However, it is possible for a compiler, LLVM in this case, to set up the parameter value in another register then copy it to r3 before the call. When fixing this problem, I noticed that ppc32 had another bug when optimizing away one of the TLS insns to a nop. The patch also tidies a mask used by global-dynamic to initial-exec TLS optimization, to just select the fields needed. Leaving the offset in the instruction wasn't a bug since it will be overwritten anyway. bfd/ * elf64-ppc.c (ppc64_elf_relocate_section): Correct GOT_TLSLD optimization. Tidy mask for GOT_TLSGD optimization. * elf32-ppc.c (ppc_elf_relocate_section): Likewise. Correct location of nop zapping high insn too. ld/testsuite/ * ld-powerpc/tlsld.d, * ld-powerpc/tlsld.s: New test. * ld-powerpc/tlsld32.d, * ld-powerpc/tlsld32.s: New test. * ld-powerpc/powerpc.exp: Run them. Move tocvar and tocnovar.
2015-01-29 08:39:55 +08:00
.* addis r3,r3,0
.* ld r3,-32768\(r3\)
.* nop
PowerPC TPREL16_HA/LO reloc optimization In the TLS GD/LD to LE optimization, ld replaces a sequence like addi 3,2,x@got@tlsgd R_PPC64_GOT_TLSGD16 x bl __tls_get_addr(x@tlsgd) R_PPC64_TLSGD x R_PPC64_REL24 __tls_get_addr nop with addis 3,13,x@tprel@ha R_PPC64_TPREL16_HA x addi 3,3,x@tprel@l R_PPC64_TPREL16_LO x nop When the tprel offset is small, this can be further optimized to nop addi 3,13,x@tprel nop bfd/ * elf64-ppc.c (struct ppc_link_hash_table): Add do_tls_opt. (ppc64_elf_tls_optimize): Set it. (ppc64_elf_relocate_section): Nop addis on TPREL16_HA, and convert insn on TPREL16_LO and TPREL16_LO_DS relocs to use r13 when addis would add zero. * elf32-ppc.c (struct ppc_elf_link_hash_table): Add do_tls_opt. (ppc_elf_tls_optimize): Set it. (ppc_elf_relocate_section): Nop addis on TPREL16_HA, and convert insn on TPREL16_LO relocs to use r2 when addis would add zero. gold/ * powerpc.cc (Target_powerpc::Relocate::relocate): Nop addis on TPREL16_HA, and convert insn on TPREL16_LO and TPREL16_LO_DS relocs to use r2/r13 when addis would add zero. ld/ * testsuite/ld-powerpc/tls.s: Add calls with tls markers. * testsuite/ld-powerpc/tls32.s: Likewise. * testsuite/ld-powerpc/powerpc.exp: Run tls marker tests. * testsuite/ld-powerpc/tls.d: Adjust for TPREL16_HA/LO optimization. * testsuite/ld-powerpc/tlsexe.d: Likewise. * testsuite/ld-powerpc/tlsexetoc.d: Likewise. * testsuite/ld-powerpc/tlsld.d: Likewise. * testsuite/ld-powerpc/tlsmark.d: Likewise. * testsuite/ld-powerpc/tlsopt4.d: Likewise. * testsuite/ld-powerpc/tlstoc.d: Likewise.
2017-08-30 19:05:35 +08:00
.* nop
Correct PowerPC64 local-dynamic TLS linker optimization The linker hardcoded r3 into a local-dynamic to local-exec TLS optimization sequence. This is normally the case since r3 is required as a parameter to (the optimized out) __tls_get_addr call. However, it is possible for a compiler, LLVM in this case, to set up the parameter value in another register then copy it to r3 before the call. When fixing this problem, I noticed that ppc32 had another bug when optimizing away one of the TLS insns to a nop. The patch also tidies a mask used by global-dynamic to initial-exec TLS optimization, to just select the fields needed. Leaving the offset in the instruction wasn't a bug since it will be overwritten anyway. bfd/ * elf64-ppc.c (ppc64_elf_relocate_section): Correct GOT_TLSLD optimization. Tidy mask for GOT_TLSGD optimization. * elf32-ppc.c (ppc_elf_relocate_section): Likewise. Correct location of nop zapping high insn too. ld/testsuite/ * ld-powerpc/tlsld.d, * ld-powerpc/tlsld.s: New test. * ld-powerpc/tlsld32.d, * ld-powerpc/tlsld32.s: New test. * ld-powerpc/powerpc.exp: Run them. Move tocvar and tocnovar.
2015-01-29 08:39:55 +08:00
.* mr r3,r29
PowerPC TPREL16_HA/LO reloc optimization In the TLS GD/LD to LE optimization, ld replaces a sequence like addi 3,2,x@got@tlsgd R_PPC64_GOT_TLSGD16 x bl __tls_get_addr(x@tlsgd) R_PPC64_TLSGD x R_PPC64_REL24 __tls_get_addr nop with addis 3,13,x@tprel@ha R_PPC64_TPREL16_HA x addi 3,3,x@tprel@l R_PPC64_TPREL16_LO x nop When the tprel offset is small, this can be further optimized to nop addi 3,13,x@tprel nop bfd/ * elf64-ppc.c (struct ppc_link_hash_table): Add do_tls_opt. (ppc64_elf_tls_optimize): Set it. (ppc64_elf_relocate_section): Nop addis on TPREL16_HA, and convert insn on TPREL16_LO and TPREL16_LO_DS relocs to use r13 when addis would add zero. * elf32-ppc.c (struct ppc_elf_link_hash_table): Add do_tls_opt. (ppc_elf_tls_optimize): Set it. (ppc_elf_relocate_section): Nop addis on TPREL16_HA, and convert insn on TPREL16_LO relocs to use r2 when addis would add zero. gold/ * powerpc.cc (Target_powerpc::Relocate::relocate): Nop addis on TPREL16_HA, and convert insn on TPREL16_LO and TPREL16_LO_DS relocs to use r2/r13 when addis would add zero. ld/ * testsuite/ld-powerpc/tls.s: Add calls with tls markers. * testsuite/ld-powerpc/tls32.s: Likewise. * testsuite/ld-powerpc/powerpc.exp: Run tls marker tests. * testsuite/ld-powerpc/tls.d: Adjust for TPREL16_HA/LO optimization. * testsuite/ld-powerpc/tlsexe.d: Likewise. * testsuite/ld-powerpc/tlsexetoc.d: Likewise. * testsuite/ld-powerpc/tlsld.d: Likewise. * testsuite/ld-powerpc/tlsmark.d: Likewise. * testsuite/ld-powerpc/tlsopt4.d: Likewise. * testsuite/ld-powerpc/tlstoc.d: Likewise.
2017-08-30 19:05:35 +08:00
.* addi r3,r13,4096
PowerPC64 __tls_get_addr sequence optimization There isn't a good reason for ld.bfd to behave differently from gold in the code generated by TLS GD/LD to LE optimization. bfd/ * elf64-ppc.c (ppc64_elf_relocate_section): When optimizing __tls_get_addr call sequences to LE, don't move the addi down to the nop. Replace the bl with addi and leave the nop alone. ld/ * testsuite/ld-powerpc/tls.d: Update. * testsuite/ld-powerpc/tlsexe.d: Update. * testsuite/ld-powerpc/tlsexetoc.d: Update. * testsuite/ld-powerpc/tlsld.d: Update. * testsuite/ld-powerpc/tlsmark.d: Update. * testsuite/ld-powerpc/tlsopt4.d: Update. * testsuite/ld-powerpc/tlstoc.d: Update.
2017-08-30 19:05:09 +08:00
.* nop
Correct PowerPC64 local-dynamic TLS linker optimization The linker hardcoded r3 into a local-dynamic to local-exec TLS optimization sequence. This is normally the case since r3 is required as a parameter to (the optimized out) __tls_get_addr call. However, it is possible for a compiler, LLVM in this case, to set up the parameter value in another register then copy it to r3 before the call. When fixing this problem, I noticed that ppc32 had another bug when optimizing away one of the TLS insns to a nop. The patch also tidies a mask used by global-dynamic to initial-exec TLS optimization, to just select the fields needed. Leaving the offset in the instruction wasn't a bug since it will be overwritten anyway. bfd/ * elf64-ppc.c (ppc64_elf_relocate_section): Correct GOT_TLSLD optimization. Tidy mask for GOT_TLSGD optimization. * elf32-ppc.c (ppc_elf_relocate_section): Likewise. Correct location of nop zapping high insn too. ld/testsuite/ * ld-powerpc/tlsld.d, * ld-powerpc/tlsld.s: New test. * ld-powerpc/tlsld32.d, * ld-powerpc/tlsld32.s: New test. * ld-powerpc/powerpc.exp: Run them. Move tocvar and tocnovar.
2015-01-29 08:39:55 +08:00
.* ld r3,-32768\(r3\)
.* nop
.* nop
.* nop
.* nop
PowerPC TPREL16_HA/LO reloc optimization In the TLS GD/LD to LE optimization, ld replaces a sequence like addi 3,2,x@got@tlsgd R_PPC64_GOT_TLSGD16 x bl __tls_get_addr(x@tlsgd) R_PPC64_TLSGD x R_PPC64_REL24 __tls_get_addr nop with addis 3,13,x@tprel@ha R_PPC64_TPREL16_HA x addi 3,3,x@tprel@l R_PPC64_TPREL16_LO x nop When the tprel offset is small, this can be further optimized to nop addi 3,13,x@tprel nop bfd/ * elf64-ppc.c (struct ppc_link_hash_table): Add do_tls_opt. (ppc64_elf_tls_optimize): Set it. (ppc64_elf_relocate_section): Nop addis on TPREL16_HA, and convert insn on TPREL16_LO and TPREL16_LO_DS relocs to use r13 when addis would add zero. * elf32-ppc.c (struct ppc_elf_link_hash_table): Add do_tls_opt. (ppc_elf_tls_optimize): Set it. (ppc_elf_relocate_section): Nop addis on TPREL16_HA, and convert insn on TPREL16_LO relocs to use r2 when addis would add zero. gold/ * powerpc.cc (Target_powerpc::Relocate::relocate): Nop addis on TPREL16_HA, and convert insn on TPREL16_LO and TPREL16_LO_DS relocs to use r2/r13 when addis would add zero. ld/ * testsuite/ld-powerpc/tls.s: Add calls with tls markers. * testsuite/ld-powerpc/tls32.s: Likewise. * testsuite/ld-powerpc/powerpc.exp: Run tls marker tests. * testsuite/ld-powerpc/tls.d: Adjust for TPREL16_HA/LO optimization. * testsuite/ld-powerpc/tlsexe.d: Likewise. * testsuite/ld-powerpc/tlsexetoc.d: Likewise. * testsuite/ld-powerpc/tlsld.d: Likewise. * testsuite/ld-powerpc/tlsmark.d: Likewise. * testsuite/ld-powerpc/tlsopt4.d: Likewise. * testsuite/ld-powerpc/tlstoc.d: Likewise.
2017-08-30 19:05:35 +08:00
.* nop
Correct PowerPC64 local-dynamic TLS linker optimization The linker hardcoded r3 into a local-dynamic to local-exec TLS optimization sequence. This is normally the case since r3 is required as a parameter to (the optimized out) __tls_get_addr call. However, it is possible for a compiler, LLVM in this case, to set up the parameter value in another register then copy it to r3 before the call. When fixing this problem, I noticed that ppc32 had another bug when optimizing away one of the TLS insns to a nop. The patch also tidies a mask used by global-dynamic to initial-exec TLS optimization, to just select the fields needed. Leaving the offset in the instruction wasn't a bug since it will be overwritten anyway. bfd/ * elf64-ppc.c (ppc64_elf_relocate_section): Correct GOT_TLSLD optimization. Tidy mask for GOT_TLSGD optimization. * elf32-ppc.c (ppc_elf_relocate_section): Likewise. Correct location of nop zapping high insn too. ld/testsuite/ * ld-powerpc/tlsld.d, * ld-powerpc/tlsld.s: New test. * ld-powerpc/tlsld32.d, * ld-powerpc/tlsld32.s: New test. * ld-powerpc/powerpc.exp: Run them. Move tocvar and tocnovar.
2015-01-29 08:39:55 +08:00
.* mr r3,r29
PowerPC TPREL16_HA/LO reloc optimization In the TLS GD/LD to LE optimization, ld replaces a sequence like addi 3,2,x@got@tlsgd R_PPC64_GOT_TLSGD16 x bl __tls_get_addr(x@tlsgd) R_PPC64_TLSGD x R_PPC64_REL24 __tls_get_addr nop with addis 3,13,x@tprel@ha R_PPC64_TPREL16_HA x addi 3,3,x@tprel@l R_PPC64_TPREL16_LO x nop When the tprel offset is small, this can be further optimized to nop addi 3,13,x@tprel nop bfd/ * elf64-ppc.c (struct ppc_link_hash_table): Add do_tls_opt. (ppc64_elf_tls_optimize): Set it. (ppc64_elf_relocate_section): Nop addis on TPREL16_HA, and convert insn on TPREL16_LO and TPREL16_LO_DS relocs to use r13 when addis would add zero. * elf32-ppc.c (struct ppc_elf_link_hash_table): Add do_tls_opt. (ppc_elf_tls_optimize): Set it. (ppc_elf_relocate_section): Nop addis on TPREL16_HA, and convert insn on TPREL16_LO relocs to use r2 when addis would add zero. gold/ * powerpc.cc (Target_powerpc::Relocate::relocate): Nop addis on TPREL16_HA, and convert insn on TPREL16_LO and TPREL16_LO_DS relocs to use r2/r13 when addis would add zero. ld/ * testsuite/ld-powerpc/tls.s: Add calls with tls markers. * testsuite/ld-powerpc/tls32.s: Likewise. * testsuite/ld-powerpc/powerpc.exp: Run tls marker tests. * testsuite/ld-powerpc/tls.d: Adjust for TPREL16_HA/LO optimization. * testsuite/ld-powerpc/tlsexe.d: Likewise. * testsuite/ld-powerpc/tlsexetoc.d: Likewise. * testsuite/ld-powerpc/tlsld.d: Likewise. * testsuite/ld-powerpc/tlsmark.d: Likewise. * testsuite/ld-powerpc/tlsopt4.d: Likewise. * testsuite/ld-powerpc/tlstoc.d: Likewise.
2017-08-30 19:05:35 +08:00
.* addi r3,r13,-28672
PowerPC64 __tls_get_addr sequence optimization There isn't a good reason for ld.bfd to behave differently from gold in the code generated by TLS GD/LD to LE optimization. bfd/ * elf64-ppc.c (ppc64_elf_relocate_section): When optimizing __tls_get_addr call sequences to LE, don't move the addi down to the nop. Replace the bl with addi and leave the nop alone. ld/ * testsuite/ld-powerpc/tls.d: Update. * testsuite/ld-powerpc/tlsexe.d: Update. * testsuite/ld-powerpc/tlsexetoc.d: Update. * testsuite/ld-powerpc/tlsld.d: Update. * testsuite/ld-powerpc/tlsmark.d: Update. * testsuite/ld-powerpc/tlsopt4.d: Update. * testsuite/ld-powerpc/tlstoc.d: Update.
2017-08-30 19:05:09 +08:00
.* nop
Correct PowerPC64 local-dynamic TLS linker optimization The linker hardcoded r3 into a local-dynamic to local-exec TLS optimization sequence. This is normally the case since r3 is required as a parameter to (the optimized out) __tls_get_addr call. However, it is possible for a compiler, LLVM in this case, to set up the parameter value in another register then copy it to r3 before the call. When fixing this problem, I noticed that ppc32 had another bug when optimizing away one of the TLS insns to a nop. The patch also tidies a mask used by global-dynamic to initial-exec TLS optimization, to just select the fields needed. Leaving the offset in the instruction wasn't a bug since it will be overwritten anyway. bfd/ * elf64-ppc.c (ppc64_elf_relocate_section): Correct GOT_TLSLD optimization. Tidy mask for GOT_TLSGD optimization. * elf32-ppc.c (ppc_elf_relocate_section): Likewise. Correct location of nop zapping high insn too. ld/testsuite/ * ld-powerpc/tlsld.d, * ld-powerpc/tlsld.s: New test. * ld-powerpc/tlsld32.d, * ld-powerpc/tlsld32.s: New test. * ld-powerpc/powerpc.exp: Run them. Move tocvar and tocnovar.
2015-01-29 08:39:55 +08:00
.* ld r3,0\(r3\)
.* nop
.* nop
PowerPC TPREL16_HA/LO reloc optimization In the TLS GD/LD to LE optimization, ld replaces a sequence like addi 3,2,x@got@tlsgd R_PPC64_GOT_TLSGD16 x bl __tls_get_addr(x@tlsgd) R_PPC64_TLSGD x R_PPC64_REL24 __tls_get_addr nop with addis 3,13,x@tprel@ha R_PPC64_TPREL16_HA x addi 3,3,x@tprel@l R_PPC64_TPREL16_LO x nop When the tprel offset is small, this can be further optimized to nop addi 3,13,x@tprel nop bfd/ * elf64-ppc.c (struct ppc_link_hash_table): Add do_tls_opt. (ppc64_elf_tls_optimize): Set it. (ppc64_elf_relocate_section): Nop addis on TPREL16_HA, and convert insn on TPREL16_LO and TPREL16_LO_DS relocs to use r13 when addis would add zero. * elf32-ppc.c (struct ppc_elf_link_hash_table): Add do_tls_opt. (ppc_elf_tls_optimize): Set it. (ppc_elf_relocate_section): Nop addis on TPREL16_HA, and convert insn on TPREL16_LO relocs to use r2 when addis would add zero. gold/ * powerpc.cc (Target_powerpc::Relocate::relocate): Nop addis on TPREL16_HA, and convert insn on TPREL16_LO and TPREL16_LO_DS relocs to use r2/r13 when addis would add zero. ld/ * testsuite/ld-powerpc/tls.s: Add calls with tls markers. * testsuite/ld-powerpc/tls32.s: Likewise. * testsuite/ld-powerpc/powerpc.exp: Run tls marker tests. * testsuite/ld-powerpc/tls.d: Adjust for TPREL16_HA/LO optimization. * testsuite/ld-powerpc/tlsexe.d: Likewise. * testsuite/ld-powerpc/tlsexetoc.d: Likewise. * testsuite/ld-powerpc/tlsld.d: Likewise. * testsuite/ld-powerpc/tlsmark.d: Likewise. * testsuite/ld-powerpc/tlsopt4.d: Likewise. * testsuite/ld-powerpc/tlstoc.d: Likewise.
2017-08-30 19:05:35 +08:00
.* nop
Correct PowerPC64 local-dynamic TLS linker optimization The linker hardcoded r3 into a local-dynamic to local-exec TLS optimization sequence. This is normally the case since r3 is required as a parameter to (the optimized out) __tls_get_addr call. However, it is possible for a compiler, LLVM in this case, to set up the parameter value in another register then copy it to r3 before the call. When fixing this problem, I noticed that ppc32 had another bug when optimizing away one of the TLS insns to a nop. The patch also tidies a mask used by global-dynamic to initial-exec TLS optimization, to just select the fields needed. Leaving the offset in the instruction wasn't a bug since it will be overwritten anyway. bfd/ * elf64-ppc.c (ppc64_elf_relocate_section): Correct GOT_TLSLD optimization. Tidy mask for GOT_TLSGD optimization. * elf32-ppc.c (ppc_elf_relocate_section): Likewise. Correct location of nop zapping high insn too. ld/testsuite/ * ld-powerpc/tlsld.d, * ld-powerpc/tlsld.s: New test. * ld-powerpc/tlsld32.d, * ld-powerpc/tlsld32.s: New test. * ld-powerpc/powerpc.exp: Run them. Move tocvar and tocnovar.
2015-01-29 08:39:55 +08:00
.* mr r3,r29
PowerPC TPREL16_HA/LO reloc optimization In the TLS GD/LD to LE optimization, ld replaces a sequence like addi 3,2,x@got@tlsgd R_PPC64_GOT_TLSGD16 x bl __tls_get_addr(x@tlsgd) R_PPC64_TLSGD x R_PPC64_REL24 __tls_get_addr nop with addis 3,13,x@tprel@ha R_PPC64_TPREL16_HA x addi 3,3,x@tprel@l R_PPC64_TPREL16_LO x nop When the tprel offset is small, this can be further optimized to nop addi 3,13,x@tprel nop bfd/ * elf64-ppc.c (struct ppc_link_hash_table): Add do_tls_opt. (ppc64_elf_tls_optimize): Set it. (ppc64_elf_relocate_section): Nop addis on TPREL16_HA, and convert insn on TPREL16_LO and TPREL16_LO_DS relocs to use r13 when addis would add zero. * elf32-ppc.c (struct ppc_elf_link_hash_table): Add do_tls_opt. (ppc_elf_tls_optimize): Set it. (ppc_elf_relocate_section): Nop addis on TPREL16_HA, and convert insn on TPREL16_LO relocs to use r2 when addis would add zero. gold/ * powerpc.cc (Target_powerpc::Relocate::relocate): Nop addis on TPREL16_HA, and convert insn on TPREL16_LO and TPREL16_LO_DS relocs to use r2/r13 when addis would add zero. ld/ * testsuite/ld-powerpc/tls.s: Add calls with tls markers. * testsuite/ld-powerpc/tls32.s: Likewise. * testsuite/ld-powerpc/powerpc.exp: Run tls marker tests. * testsuite/ld-powerpc/tls.d: Adjust for TPREL16_HA/LO optimization. * testsuite/ld-powerpc/tlsexe.d: Likewise. * testsuite/ld-powerpc/tlsexetoc.d: Likewise. * testsuite/ld-powerpc/tlsld.d: Likewise. * testsuite/ld-powerpc/tlsmark.d: Likewise. * testsuite/ld-powerpc/tlsopt4.d: Likewise. * testsuite/ld-powerpc/tlstoc.d: Likewise.
2017-08-30 19:05:35 +08:00
.* addi r3,r13,-28672
PowerPC64 __tls_get_addr sequence optimization There isn't a good reason for ld.bfd to behave differently from gold in the code generated by TLS GD/LD to LE optimization. bfd/ * elf64-ppc.c (ppc64_elf_relocate_section): When optimizing __tls_get_addr call sequences to LE, don't move the addi down to the nop. Replace the bl with addi and leave the nop alone. ld/ * testsuite/ld-powerpc/tls.d: Update. * testsuite/ld-powerpc/tlsexe.d: Update. * testsuite/ld-powerpc/tlsexetoc.d: Update. * testsuite/ld-powerpc/tlsld.d: Update. * testsuite/ld-powerpc/tlsmark.d: Update. * testsuite/ld-powerpc/tlsopt4.d: Update. * testsuite/ld-powerpc/tlstoc.d: Update.
2017-08-30 19:05:09 +08:00
.* nop
Correct PowerPC64 local-dynamic TLS linker optimization The linker hardcoded r3 into a local-dynamic to local-exec TLS optimization sequence. This is normally the case since r3 is required as a parameter to (the optimized out) __tls_get_addr call. However, it is possible for a compiler, LLVM in this case, to set up the parameter value in another register then copy it to r3 before the call. When fixing this problem, I noticed that ppc32 had another bug when optimizing away one of the TLS insns to a nop. The patch also tidies a mask used by global-dynamic to initial-exec TLS optimization, to just select the fields needed. Leaving the offset in the instruction wasn't a bug since it will be overwritten anyway. bfd/ * elf64-ppc.c (ppc64_elf_relocate_section): Correct GOT_TLSLD optimization. Tidy mask for GOT_TLSGD optimization. * elf32-ppc.c (ppc_elf_relocate_section): Likewise. Correct location of nop zapping high insn too. ld/testsuite/ * ld-powerpc/tlsld.d, * ld-powerpc/tlsld.s: New test. * ld-powerpc/tlsld32.d, * ld-powerpc/tlsld32.s: New test. * ld-powerpc/powerpc.exp: Run them. Move tocvar and tocnovar.
2015-01-29 08:39:55 +08:00
.* ld r3,0\(r3\)
.* nop
.* nop
.* nop
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