https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71643
Bug ID: 71643
Summary: [7 Regression] internal compiler error: in
redirect_eh_edge_1, at tree-eh.c:2318 after r237427
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: jgreenhalgh at gcc dot gnu.org
CC: jakub at gcc dot gnu.org, jakub at redhat dot com
Target Milestone: ---
Created attachment 38755
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38755&action=edit
Reduced testcase
After r237427:
PR tree-optimization/71520
* tree-ssa-tail-merge.c (find_duplicate): Handle labels.
(replace_block_by): Move user labels from bb1 to bb2.
* gcc.dg/tree-ssa/pr71520.c: New test.
I'm seeing the following ICE for the attached reduced testcase when compiling
with -O3 on aarch64-none-linux-gnu/x86_64-unknown-linux-gnu:
x.cpp:30:1: internal compiler error: in redirect_eh_edge_1, at tree-eh.c:2318
foo (void)
^~~
0xd2d737 redirect_eh_edge_1
.../gcc/tree-eh.c:2318
0xd2d8e7 redirect_eh_edge(edge_def*, basic_block_def*)
.../gcc/tree-eh.c:2370
0xd12d5e gimple_redirect_edge_and_branch
.../gcc/tree-cfg.c:5664
0x8d2976 redirect_edge_and_branch(edge_def*, basic_block_def*)
.../gcc/cfghooks.c:356
0xec9098 replace_block_by
.../gcc/tree-ssa-tail-merge.c:1538
0xec9098 apply_clusters
.../gcc/tree-ssa-tail-merge.c:1635
0xec9098 tail_merge_optimize(unsigned int)
.../gcc/tree-ssa-tail-merge.c:1743
0xe78871 execute
.../gcc/tree-ssa-pre.c:4826
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
