From: David Malcolm <dmalcolm@redhat.com>
Date: Fri, 14 Aug 2020 14:48:48 +0000 (-0400)
Subject: analyzer: document how to get gimple dump from an ICE
X-Git-Tag: basepoints/gcc-12~5551
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7e625038623df83b341a509ecd9c6a85f7837ecf;p=thirdparty%2Fgcc.git

analyzer: document how to get gimple dump from an ICE

gcc/ChangeLog:
	* doc/analyzer.texi (Overview): Add tip about how to get a
	gimple dump if the analyzer ICEs.
---

diff --git a/gcc/doc/analyzer.texi b/gcc/doc/analyzer.texi
index b5d6d0f393e5..92c12e19401e 100644
--- a/gcc/doc/analyzer.texi
+++ b/gcc/doc/analyzer.texi
@@ -29,6 +29,11 @@ The implementation is read-only: it doesn't attempt to change anything,
 just emit warnings.
 
 The gimple representation can be seen using @option{-fdump-ipa-analyzer}.
+@quotation Tip
+If the analyzer ICEs before this is written out, one workaround is to use
+@option{--param=analyzer-bb-explosion-factor=0} to force the analyzer
+to bail out after analyzing the first basic block.
+@end quotation
 
 First, we build a @code{supergraph} which combines the callgraph and all
 of the CFGs into a single directed graph, with both interprocedural and