Re: [PATCH] Fix -mstack-arg-probe (PR target/64513)

On 01/12/15 13:26, Jakub Jelinek wrote: Hi! For -mstack-arg-probe we push %rax and/or %r10 in the prologue, and mark that insn as RTX_FRAME_RELATED_P. But that means that the dwarf2 pass also considers that the %rax/%r10 registers, which are call used, to be saved in the unwind info, but they a

[PATCH] Fix -mstack-arg-probe (PR target/64513)

Hi! For -mstack-arg-probe we push %rax and/or %r10 in the prologue, and mark that insn as RTX_FRAME_RELATED_P. But that means that the dwarf2 pass also considers that the %rax/%r10 registers, which are call used, to be saved in the unwind info, but they are never restored, which makes the dwarf2