Update IR

IR commit: c63708b3664568d847b6db07ea380778f5c0313a

Fix recently introduced nightly test failures
ir_cfg.c:2305: ir_schedule_blocks_bottom_up: Assertion `bb->flags & (1<<2)' failed

Author: dstogov

ext/opcache/jit/ir/ir_cfg.c

@@ -2299,10 +2299,10 @@ static int ir_schedule_blocks_bottom_up(ir_ctx *ctx)
 	/* 4. Merge empty entry blocks */
 	if ((ctx->flags & IR_MERGE_EMPTY_ENTRIES) && ctx->entries_count) {
 		for (i = 0; i < ctx->entries_count; i++) {
-			b = ctx->cfg_map[ctx->entries[i]];
+			b = ctx->entries[i];
+			IR_ASSERT(ctx->cfg_blocks[b].flags & IR_BB_ENTRY);
 			if (b && chains[b].head == b && chains[b].tail == b) {
 				bb = &ctx->cfg_blocks[b];
-				IR_ASSERT(bb->flags & IR_BB_ENTRY);
 				if (bb->flags & IR_BB_EMPTY) {
 					uint32_t successor;