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Improve codegen and type tracking in putobject

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This commit is contained in:
Maxime Chevalier-Boisvert 2021-04-15 15:00:07 -04:00 • committed by Alan Wu
parent 6250506de2
commit f2530f884e
1 changed files with 8 additions and 9 deletions
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17
yjit_codegen.c
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@ -454,7 +454,6 @@ gen_putobject(jitstate_t* jit, ctx_t* ctx)
{
// Keep track of the fixnum type tag
x86opnd_t stack_top = ctx_stack_push(ctx, TYPE_FIXNUM);
x86opnd_t imm = imm_opnd((int64_t)arg);
// 64-bit immediates can't be directly written to memory
@ -475,17 +474,17 @@ gen_putobject(jitstate_t* jit, ctx_t* ctx)
}
else
{
// Load the argument from the bytecode sequence.
// We need to do this as the argument can change due to GC compaction.
x86opnd_t pc_plus_one = const_ptr_opnd((void*)(jit->pc + 1));
mov(cb, RAX, pc_plus_one);
mov(cb, RAX, mem_opnd(64, RAX, 0));
// Load the value to push into REG0
// Note that this value may get moved by the GC
VALUE put_val = jit_get_arg(jit, 0);
jit_mov_gc_ptr(jit, cb, REG0, put_val);
// TODO: check if argument is a heap object
// TODO: check for more specific types like array, string, symbol, etc.
val_type_t val_type = SPECIAL_CONST_P(put_val)? TYPE_IMM:TYPE_HEAP;
// Write argument at SP
x86opnd_t stack_top = ctx_stack_push(ctx, TYPE_UNKNOWN);
mov(cb, stack_top, RAX);
x86opnd_t stack_top = ctx_stack_push(ctx, val_type);
mov(cb, stack_top, REG0);
}
return YJIT_KEEP_COMPILING;