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| author | David Malcolm <dmalcolm@redhat.com> | 2020-08-14 10:48:48 -0400 |
|---|---|---|
| committer | David Malcolm <dmalcolm@redhat.com> | 2020-08-14 16:55:39 -0400 |
| commit | 7e625038623df83b341a509ecd9c6a85f7837ecf (patch) | |
| tree | 6febb2aa71864002880123ee38fa04df17724fb2 /gcc/doc | |
| parent | db1c2a89db09c8fe140ed3e65a707a08737e3b41 (diff) | |
| download | gcc-7e625038623df83b341a509ecd9c6a85f7837ecf.zip gcc-7e625038623df83b341a509ecd9c6a85f7837ecf.tar.gz gcc-7e625038623df83b341a509ecd9c6a85f7837ecf.tar.bz2 | |
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.
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/analyzer.texi | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gcc/doc/analyzer.texi b/gcc/doc/analyzer.texi index b5d6d0f..92c12e1 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 |