https://sourceware.org/bugzilla/show_bug.cgi?id=24676
Bug ID: 24676
Summary: [RISCV] Redundant R_RISCV_DTPMOD* R_RISCV_DTPREL*
resulted from Glocal Dynamic -> Local Exec relaxation
Product: binutils
Version: 2.33 (HEAD)
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: maskray at google dot com
Target Milestone: ---
RISC-V psABI doesn't specify TLS relaxation. Though the code sequences are not
relaxed, dynamic relocations should be omitted for GD->LE relaxation.
% cat a.s
la.tls.gd a0,a
call __tls_get_addr@plt
la.tls.gd a0,b
call __tls_get_addr@plt
.section .tbss
.globl a
a:
.zero 4
% cat b.s
.section .tbss
.globl b
b:
.zero 4
riscv-gcc -fuse-ld=bfd-nostdlib b.s -shared -o b.so
riscv-gcc -fuse-ld=bfd -nostdlib a.s b.so -o a -Wl,--defsym=__tls_get_addr=0
readelf -Wr a
## DTPMOD32/DTPREL32 of a are redundant because a is non-preemptable
0001122c 00000106 R_RISCV_TLS_DTPMOD32 00000000 b + 0
00011230 00000108 R_RISCV_TLS_DTPREL32 00000000 b + 0
00011234 00000206 R_RISCV_TLS_DTPMOD32 00000000 a + 0
00011238 00000208 R_RISCV_TLS_DTPREL32 00000000 a + 0
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