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push/pop of link register does not affect stack size on x86

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* lightening/x86-cpu.c (pop_link_register, push_link_register): Don't
  record stack size changes here.
This commit is contained in:
Andy Wingo 2019-06-20 10:53:12 +02:00
parent 62183fb098
commit 1c36f036f6
1 changed files with 9 additions and 0 deletions
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9
lightening/x86-cpu.c
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@ -2561,13 +2561,22 @@ jmpi_with_link(jit_state_t *_jit, jit_word_t i0)
static void
pop_link_register(jit_state_t *_jit)
{
/* Treat this instruction as having no effect on the stack size; its
* effect is non-local (across functions) and handled manually. */
int saved_frame_size = _jit->frame_size;
popr(_jit, jit_gpr_regno (JIT_LR));
_jit->frame_size = saved_frame_size;
}
static void
push_link_register(jit_state_t *_jit)
{
/* See comment in pop_link_register. */
int saved_frame_size = _jit->frame_size;
pushr(_jit, jit_gpr_regno (JIT_LR));
_jit->frame_size = saved_frame_size;
}
static void