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| author | Alan Modra <amodra@gmail.com> | 2017-08-30 20:35:35 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2017-08-30 20:43:31 +0930 |
| commit | 9a23f96e919ba91587d077b1d399246dde4002dd (patch) | |
| tree | 1eb693e16708eef776aece4643cda8dfde86301c /ld/testsuite/ld-powerpc/tlsmark.d | |
| parent | b9f04fe0dfe64bc6224e7bb96378607f17da7446 (diff) | |
| download | gdb-9a23f96e919ba91587d077b1d399246dde4002dd.zip gdb-9a23f96e919ba91587d077b1d399246dde4002dd.tar.gz gdb-9a23f96e919ba91587d077b1d399246dde4002dd.tar.bz2 | |
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.
Diffstat (limited to 'ld/testsuite/ld-powerpc/tlsmark.d')
| -rw-r--r-- | ld/testsuite/ld-powerpc/tlsmark.d | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/ld/testsuite/ld-powerpc/tlsmark.d b/ld/testsuite/ld-powerpc/tlsmark.d index 720a31f..7e10074 100644 --- a/ld/testsuite/ld-powerpc/tlsmark.d +++ b/ld/testsuite/ld-powerpc/tlsmark.d @@ -11,25 +11,25 @@ Disassembly of section \.text: 0+100000e8 <_start>: .*: (48 00 00 18|18 00 00 48) b 10000100 <_start\+0x18> -.*: (38 63 90 00|00 90 63 38) addi r3,r3,-28672 +.*: (38 6d 90 00|00 90 6d 38) addi r3,r13,-28672 .*: (60 00 00 00|00 00 00 60) nop .*: (e8 83 00 00|00 00 83 e8) ld r4,0\(r3\) -.*: (3c 6d 00 00|00 00 6d 3c) addis r3,r13,0 +.*: (60 00 00 00|00 00 00 60) nop .*: (48 00 00 0c|0c 00 00 48) b 10000108 <_start\+0x20> -.*: (3c 6d 00 00|00 00 6d 3c) addis r3,r13,0 +.*: (60 00 00 00|00 00 00 60) nop .*: (4b ff ff e8|e8 ff ff 4b) b 100000ec <_start\+0x4> -.*: (38 63 10 00|00 10 63 38) addi r3,r3,4096 +.*: (38 6d 10 00|00 10 6d 38) addi r3,r13,4096 .*: (60 00 00 00|00 00 00 60) nop .*: (e8 83 80 00|00 80 83 e8) ld r4,-32768\(r3\) -.*: (3c 6d 00 00|00 00 6d 3c) addis r3,r13,0 +.*: (60 00 00 00|00 00 00 60) nop .*: (48 00 00 0c|0c 00 00 48) b 10000124 <_start\+0x3c> -.*: (3c 6d 00 00|00 00 6d 3c) addis r3,r13,0 +.*: (60 00 00 00|00 00 00 60) nop .*: (48 00 00 14|14 00 00 48) b 10000134 <_start\+0x4c> -.*: (38 63 90 04|04 90 63 38) addi r3,r3,-28668 +.*: (38 6d 90 04|04 90 6d 38) addi r3,r13,-28668 .*: (60 00 00 00|00 00 00 60) nop .*: (e8 a3 00 00|00 00 a3 e8) ld r5,0\(r3\) .*: (4b ff ff ec|ec ff ff 4b) b 1000011c <_start\+0x34> -.*: (38 63 10 00|00 10 63 38) addi r3,r3,4096 +.*: (38 6d 10 00|00 10 6d 38) addi r3,r13,4096 .*: (60 00 00 00|00 00 00 60) nop .*: (e8 a3 80 04|04 80 a3 e8) ld r5,-32764\(r3\) |