David S. Miller wrote:
In the generated asm on sparc64, invoke2() gets a tail-call whereas invoke() does not. Hmmm...
Apparently support for indirect tail-calls was added to gcc 3.4.
gcc-3.3.5:
0x0000000000000000 <invoke+0>: sub $0x8,%rsp
0x0000000000000004 <invoke+4>: callq *%esi
0x0000000000000006 <invoke+6>: add $0x8,%rsp
0x000000000000000a <invoke+10>: retq
gcc-3.4.4: 0x0000000000000000 <invoke+0>: mov %rsi,%r11 0x0000000000000003 <invoke+3>: jmpq *%r11d
Regards Patrick
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