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Eliminate type checks in opt_lt

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Maxime Chevalier-Boisvert 2021-01-25 16:42:42 -05:00 • committed by Alan Wu
parent 63e85de33a
commit e7909467df
1 changed files with 10 additions and 4 deletions
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14
ujit_codegen.c
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@ -532,14 +532,20 @@ gen_opt_lt(jitstate_t* jit, ctx_t* ctx)
jnz_ptr(cb, side_exit);
// Get the operands and destination from the stack
int arg1_type = ctx_get_top_type(ctx);
x86opnd_t arg1 = ctx_stack_pop(ctx, 1);
int arg0_type = ctx_get_top_type(ctx);
x86opnd_t arg0 = ctx_stack_pop(ctx, 1);
// If not fixnums, fall back
test(cb, arg0, imm_opnd(RUBY_FIXNUM_FLAG));
jz_ptr(cb, side_exit);
test(cb, arg1, imm_opnd(RUBY_FIXNUM_FLAG));
jz_ptr(cb, side_exit);
if (arg0_type != T_FIXNUM) {
test(cb, arg0, imm_opnd(RUBY_FIXNUM_FLAG));
jz_ptr(cb, side_exit);
}
if (arg1_type != T_FIXNUM) {
test(cb, arg1, imm_opnd(RUBY_FIXNUM_FLAG));
jz_ptr(cb, side_exit);
}
// Compare the arguments
mov(cb, REG0, arg0);