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Use C_ARG_REGS earlier

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John Hawthorn 2021-09-03 22:15:17 -07:00 committed by Alan Wu
parent c2b1934475
commit f30f299060
1 changed files with 8 additions and 7 deletions
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15
yjit_codegen.c
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@ -2161,28 +2161,29 @@ gen_equality_specialized(jitstate_t* jit, ctx_t* ctx, uint8_t *side_exit)
return YJIT_CANT_COMPILE;
}
// Load a and b in preparation for call later
mov(cb, C_ARG_REGS[0], a_opnd);
mov(cb, C_ARG_REGS[1], b_opnd);
// Guard that a is a String
mov(cb, REG0, a_opnd);
mov(cb, REG0, C_ARG_REGS[0]);
jit_guard_known_klass(jit, ctx, rb_cString, OPND_STACK(1), comptime_a, SEND_MAX_DEPTH, side_exit);
uint32_t ret = cb_new_label(cb, "ret");
// If they are equal by identity, return true
mov(cb, REG0, b_opnd);
cmp(cb, REG0, a_opnd);
mov(cb, REG0, imm_opnd(Qtrue));
cmp(cb, C_ARG_REGS[0], C_ARG_REGS[1]);
mov(cb, RAX, imm_opnd(Qtrue));
je_label(cb, ret);
// Otherwise guard that b is a T_STRING (from type info) or String (from runtime guard)
if (ctx_get_opnd_type(ctx, OPND_STACK(0)).type != ETYPE_STRING) {
mov(cb, REG0, b_opnd);
mov(cb, REG0, C_ARG_REGS[1]);
// Note: any T_STRING is valid here, but we check for a ::String for simplicity
jit_guard_known_klass(jit, ctx, rb_cString, OPND_STACK(0), comptime_b, SEND_MAX_DEPTH, side_exit);
}
// Call rb_str_eql_internal(a, b)
mov(cb, C_ARG_REGS[0], a_opnd);
mov(cb, C_ARG_REGS[1], b_opnd);
call_ptr(cb, REG0, (void *)rb_str_eql_internal);
// Push the output on the stack