From cc08b0004f0866d557451bd42b6b2bfcc9aa498d Mon Sep 17 00:00:00 2001
From: Andy Ayers <andya@microsoft.com>
Date: Sun, 26 Jun 2022 09:13:20 -0700
Subject: [PATCH] JIT: don't try to shorten an already short arm64 adr

Fixes #71217.
---
 src/coreclr/jit/emit.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/coreclr/jit/emit.cpp b/src/coreclr/jit/emit.cpp
index eb846e06a0dc6..7bacfa28b94fb 100644
--- a/src/coreclr/jit/emit.cpp
+++ b/src/coreclr/jit/emit.cpp
@@ -4646,6 +4646,14 @@ void emitter::emitJumpDistBind()
         {
             // Reference to JIT data
             assert(jmp->idIsBound());
+
+            // Already the smallest size?
+            if (jmp->idjShort)
+            {
+                assert(jmp->idCodeSize() == ssz);
+                continue;
+            }
+
             UNATIVE_OFFSET srcOffs = jmpIG->igOffs + jmp->idjOffs;
 
             int doff = jmp->idAddr()->iiaGetJitDataOffset();