diff options
Diffstat (limited to 'yjit_codegen.c')
| -rw-r--r-- | yjit_codegen.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/yjit_codegen.c b/yjit_codegen.c index 99e77fc82f..62be5e3d2e 100644 --- a/yjit_codegen.c +++ b/yjit_codegen.c @@ -478,6 +478,34 @@ gen_dup(jitstate_t* jit, ctx_t* ctx) return YJIT_KEEP_COMPILING; } +// duplicate stack top n elements +static codegen_status_t +gen_dupn(jitstate_t* jit, ctx_t* ctx) +{ + rb_num_t n = (rb_num_t)jit_get_arg(jit, 0); + + // In practice, seems to be only used for n==2 + if (n != 2) { + return YJIT_CANT_COMPILE; + } + + val_type_t type1 = ctx_get_opnd_type(ctx, OPND_STACK(1)); + x86opnd_t opnd1 = ctx_stack_opnd(ctx, 1); + + val_type_t type0 = ctx_get_opnd_type(ctx, OPND_STACK(0)); + x86opnd_t opnd0 = ctx_stack_opnd(ctx, 0); + + x86opnd_t dst1 = ctx_stack_push(ctx, type1); + mov(cb, REG0, opnd1); + mov(cb, dst1, REG0); + + x86opnd_t dst0 = ctx_stack_push(ctx, type0); + mov(cb, REG0, opnd0); + mov(cb, dst0, REG0); + + return YJIT_KEEP_COMPILING; +} + // set Nth stack entry to stack top static codegen_status_t gen_setn(jitstate_t* jit, ctx_t* ctx) @@ -505,6 +533,15 @@ gen_pop(jitstate_t* jit, ctx_t* ctx) return YJIT_KEEP_COMPILING; } +// Pop n values off the stack +static codegen_status_t +gen_adjuststack(jitstate_t* jit, ctx_t* ctx) +{ + rb_num_t n = (rb_num_t)jit_get_arg(jit, 0); + ctx_stack_pop(ctx, n); + return YJIT_KEEP_COMPILING; +} + static codegen_status_t gen_putnil(jitstate_t* jit, ctx_t* ctx) { @@ -2260,8 +2297,10 @@ yjit_init_codegen(void) // Map YARV opcodes to the corresponding codegen functions yjit_reg_op(BIN(nop), gen_nop); yjit_reg_op(BIN(dup), gen_dup); + yjit_reg_op(BIN(dupn), gen_dupn); yjit_reg_op(BIN(setn), gen_setn); yjit_reg_op(BIN(pop), gen_pop); + yjit_reg_op(BIN(adjuststack), gen_adjuststack); yjit_reg_op(BIN(putnil), gen_putnil); yjit_reg_op(BIN(putobject), gen_putobject); yjit_reg_op(BIN(putobject_INT2FIX_0_), gen_putobject_int2fix); |