[PATCH 1/4] YJIT: Move CodegenGlobals::freed_pages into an Rc

	This allows for supplying a freed_pages vec in Rust tests. We need it so we
	can test scenarios that occur after code GC.
	---
	 yjit/src/asm/mod.rs | 48 +++++++++++++++++++++++++++++++++------------
	 yjit/src/codegen.rs | 16 ++++-----------
	 2 files changed, 39 insertions(+), 25 deletions(-)

	Subject: [PATCH 2/4] YJIT: other_cb is None in tests

	Since the other cb is in CodegenGlobals, and we want Rust tests to be
	self-contained.
	---
	 yjit/src/asm/mod.rs | 1 +
	 1 file changed, 1 insertion(+)

	Subject: [PATCH 3/4] YJIT: ARM64: Move functions out of arm64_emit()

	---
	 yjit/src/backend/arm64/mod.rs | 180 +++++++++++++++++-----------------
	 1 file changed, 90 insertions(+), 90 deletions(-)

	Subject: [PATCH 4/4] YJIT: ARM64: Fix long jumps to labels

	Previously, with Code GC, YJIT panicked while trying to emit a B.cond
	instruction with an offset that is not encodable in 19 bits. This only
	happens when the code in an assembler instance straddles two pages.

	To fix this, when we detect that a jump to a label can land on a
	different page, we switch to a fresh new page and regenerate all the
	code in the assembler there. We still assume that no one assembler has
	so much code that it wouldn't fit inside a fresh new page.

	[Bug #19385]
	---
	 yjit/src/backend/arm64/mod.rs | 65 ++++++++++++++++++++++++++++++++---
	 1 file changed, 60 insertions(+), 5 deletions(-)