From 6ebec02f05c08fd0d3f90b1ff515ad8f3562ecca Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Henrik=20Rydg=C3=A5rd?= <hrydgard@gmail.com>
Date: Sat, 22 Jun 2024 15:16:27 +0200
Subject: [PATCH] Fix crash in JITIR after disassembly improvement.

Fixes #19292
---
 Core/MIPS/IR/IRInst.cpp     | 3 +++
 Core/MIPS/IR/IRRegCache.cpp | 1 +
 2 files changed, 4 insertions(+)

diff --git a/Core/MIPS/IR/IRInst.cpp b/Core/MIPS/IR/IRInst.cpp
index 6c686c85af..3214b627a6 100644
--- a/Core/MIPS/IR/IRInst.cpp
+++ b/Core/MIPS/IR/IRInst.cpp
@@ -17,6 +17,9 @@
 //  v = Vec4Init constant, chosen by immediate
 //  s = Shuffle immediate (4 2-bit fields, choosing a xyzw shuffle)
 //  r = Replacement function (in constant field)
+//
+//  WARNING: The IRJit compiler also uses these letters for semantic information!
+//  So if you add new letters, don't forget to add them to IRNativeRegCacheBase::MappingFromInst.
 
 static const IRMeta irMeta[] = {
 	{ IROp::Nop, "Nop", "" },
diff --git a/Core/MIPS/IR/IRRegCache.cpp b/Core/MIPS/IR/IRRegCache.cpp
index 1af6dbfed0..adc2939303 100644
--- a/Core/MIPS/IR/IRRegCache.cpp
+++ b/Core/MIPS/IR/IRRegCache.cpp
@@ -911,6 +911,7 @@ void IRNativeRegCacheBase::MappingFromInst(const IRInst &inst, Mapping mapping[3
 		case '\0':
 		case '_':
 		case 'C':
+		case 'r':
 		case 'I':
 		case 'v':
 		case 's':