https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70326
Bug ID: 70326
Summary: [6 Regression] ICE: RTL check: expected elt 3 type 'e'
or 'u', have '0' (rtx note) in PATTERN, at rtl.h:1440
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Target: x86_64-pc-linux-gnu
Created attachment 38039
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38039&action=edit
reduced testcase
I am failing to reduce the number of compiler flags used, especially the
-fno-*dce ones. If all the variables are used in a return statement, the
testcase stops ICEing.
RTL checking might be needed in order to reproduce.
Compiler output:
$ gcc testcase.c -Og -fno-dce -fno-guess-branch-probability -fschedule-insns
-fno-tree-coalesce-vars -fno-tree-dce
testcase.c: In function 'foo':
testcase.c:7:1: note: The ABI for passing parameters with 32-byte alignment has
changed in GCC 4.6
foo(u128 u128_0, v32u8 v32u8_0, v32u32 v32u16_0, v32u32 v32u64_0, v32u128
v32u128_0)
^~~
testcase.c:7:1: warning: AVX vector argument without AVX enabled changes the
ABI [-Wpsabi]
testcase.c:16:1: internal compiler error: RTL check: expected elt 3 type 'e' or
'u', have '0' (rtx note) in PATTERN, at rtl.h:1440
}
^
0xb373f6 rtl_check_failed_type2(rtx_def const*, int, int, int, char const*,
int, char const*)
/repo/gcc-trunk/gcc/rtl.c:802
0x1177f64 PATTERN(rtx_def*)
/repo/gcc-trunk/gcc/rtl.h:1440
0x1177f64 insn_extract(rtx_insn*)
/repo/build-trunk-234350-checking-yes-rtl-df-nographite/gcc/insn-extract.c:22
0x9fb396 lra_set_insn_recog_data(rtx_insn*)
/repo/gcc-trunk/gcc/lra.c:1014
0x9ff5d0 lra_get_insn_recog_data
/repo/gcc-trunk/gcc/lra-int.h:486
0x9ff5d0 restore_scratches
/repo/gcc-trunk/gcc/lra.c:1973
0x9ff5d0 lra(_IO_FILE*)
/repo/gcc-trunk/gcc/lra.c:2390
0x9a5d39 do_reload
/repo/gcc-trunk/gcc/ira.c:5425
0x9a5d39 execute
/repo/gcc-trunk/gcc/ira.c:5609
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.
$ gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest/bin/x86_64-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-234350-checking-yes-rtl-df-nographite/bin/../libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-checking=yes,rtl,df --without-cloog --without-ppl --without-isl
--disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-234350-checking-yes-rtl-df-nographite
Thread model: posix
gcc version 6.0.0 20160319 (experimental) (GCC)
Tested revisions:
trunk r234350 - FAIL
5-branch r234210 - OK
