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[Bug tree-optimization/70725] Internal compiler error (ICE) on valid code


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70725

--- Comment #10 from H.J. Lu <hjl.tools at gmail dot com> ---
It also fails on x86-64:

/export/build/gnu/gcc/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/gcc/build-x86_64-linux/gcc/
/export/gnu/import/git/sources/gcc/gcc/testsuite/gcc.dg/pr70725.c
-fno-diagnostics-show-caret -fdiagnostics-color=never -O3 -march=skylake-avx512
-S -o pr70725.s
/export/gnu/import/git/sources/gcc/gcc/testsuite/gcc.dg/pr70725.c: In function
âfn1â:
/export/gnu/import/git/sources/gcc/gcc/testsuite/gcc.dg/pr70725.c:13:1:
internal compiler error: in phi_convertible_by_degenerating_args, at
tree-if-conv.c:605
0xec7591 phi_convertible_by_degenerating_args
        /export/gnu/import/git/sources/gcc/gcc/tree-if-conv.c:605
0xec7761 if_convertible_phi_p
        /export/gnu/import/git/sources/gcc/gcc/tree-if-conv.c:664
0xec9249 if_convertible_loop_p_1
        /export/gnu/import/git/sources/gcc/gcc/tree-if-conv.c:1408
0xec9444 if_convertible_loop_p
        /export/gnu/import/git/sources/gcc/gcc/tree-if-conv.c:1466
0xeccdc7 tree_if_conversion
        /export/gnu/import/git/sources/gcc/gcc/tree-if-conv.c:2774
0xecd062 execute
        /export/gnu/import/git/sources/gcc/gcc/tree-if-conv.c:2875
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.
[hjl@gnu-6 gcc]$

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