[clang] [analyzer] Print the PostInitializer target in exploded-graph-rewriter (PR #116034)

[Balazs Benics via cfe-commits]

https://github.com/steakhal created https://github.com/llvm/llvm-project/pull/116034

This aids debugging PostInitializer program points by knowing what is the location being initialized.

![Screenshot from 2024-11-11 09-50-51](https://github.com/user-attachments/assets/481f79f2-5cc5-4d0c-ac7d-ac24b4b23bc5)


>From 7faee31bc4bc0b1a9fd037a99f54856c84affc91 Mon Sep 17 00:00:00 2001
From: Balazs Benics <benicsbalazs at gmail.com>
Date: Wed, 13 Nov 2024 12:55:06 +0100
Subject: [PATCH] [analyzer] Print the PostInitializer target in
 exploded-graph-rewriter

This aids debugging PostInitializer program points by knowing what is
the location being initialized.
---
 clang/utils/analyzer/exploded-graph-rewriter.py | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/clang/utils/analyzer/exploded-graph-rewriter.py b/clang/utils/analyzer/exploded-graph-rewriter.py
index 5eaa7738103f79..2eff20fd5899f3 100755
--- a/clang/utils/analyzer/exploded-graph-rewriter.py
+++ b/clang/utils/analyzer/exploded-graph-rewriter.py
@@ -88,6 +88,8 @@ def __init__(self, json_pp):
             )
         elif self.kind == "BlockEntrance":
             self.block_id = json_pp["block_id"]
+        elif self.kind == "PostInitializer":
+            self.target = json_pp["field_decl"] if "field_decl" in json_pp else json_pp["type"]
 
 
 # A single expression acting as a key in a deserialized Environment.
@@ -618,6 +620,13 @@ def visit_program_point(self, p):
                 '<font color="%s">%s</font></td>'
                 '<td align="left">[B%d]</td></tr>' % (color, p.kind, p.block_id)
             )
+        elif p.kind == "PostInitializer":
+            self._dump(
+                '<td width="0"></td>'
+                '<td align="left" width="0">'
+                '<font color="%s">%s</font></td>'
+                '<td align="left">%s</td></tr>' % (color, p.kind, p.target)
+            )
         else:
             # TODO: Print more stuff for other kinds of points.
             self._dump(