riscv64: use `tail` for tail calls.
Don't assume that a `j` will always be in range. Let the toolchain
come up with the shortest sequence that will actually work.
Test: llvm-objdump -d
Change-Id: I497a68ecae434aad173c2b1c8024aed3756b8440
diff --git a/libc/arch-riscv64/bionic/__bionic_clone.S b/libc/arch-riscv64/bionic/__bionic_clone.S
index d535095..2827857 100644
--- a/libc/arch-riscv64/bionic/__bionic_clone.S
+++ b/libc/arch-riscv64/bionic/__bionic_clone.S
@@ -51,7 +51,7 @@
.L_bc_failure:
# Set errno if something went wrong.
neg a0, a0
- j __set_errno_internal
+ tail __set_errno_internal
.L_bc_child:
# We're in the child now. Set the end of the frame record chain.
@@ -62,5 +62,5 @@
ld a0, 0(sp)
ld a1, 8(sp)
addi sp, sp, 16
- j __start_thread
+ tail __start_thread
END(__bionic_clone)