https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70293
Bug ID: 70293
Summary: [ICE, AVX-512] Wrong reg constraints in vec_dup
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: kyukhin at gcc dot gnu.org
Target Milestone: ---
Created attachment 38018
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38018&action=edit
Reproducer
Attached testcase ICEs when compiled as:
./xgcc -B. -mtune=broadwell -mavx512vl -O2 -S ~/pixman-sse.i
1_0.32.6-r0/pixman-0.32.6/pixman/pixman-sse2.c: In function
‘fast_composite_scaled_bilinear_sse2_8888_8_8888_none\
_OVER’:
/home/donn/c/8.x/wrl-projects/intel-skylake-standard-glibc_std/bitbake_build/tmp/work/skylake-avx512-64-wrs-linux/pix\
man/1_0.32.6-r0/pixman-0.32.6/pixman/pixman-sse2.c:6059:1: error: insn does not
satisfy its constraints:
(insn 5050 5049 1065 58 (set (reg/v:V8HI 56 xmm19 [orig:670 D.27517 ] [670])
(vec_duplicate:V8HI (vec_select:HI (reg/v:V8HI 56 xmm19 [orig:670
D.27517 ] [670])
(parallel [
(const_int 0 [0])
]))))
/home/donn/c/8.x/wrl-projects/intel-skylake-standard-glibc_std/bitbake_build/tmp/sysroots/x\
86_64-linux/usr/lib/x86_64-wrs-linux/gcc/x86_64-wrs-linux/5.2.0/include/emmintrin.h:606
4153 {avx2_pbroadcastv8hi}
(nil))
/home/donn/c/8.x/wrl-projects/intel-skylake-standard-glibc_std/bitbake_build/tmp/work/skylake-avx512-64-wrs-linux/pix\
man/1_0.32.6-r0/pixman-0.32.6/pixman/pixman-sse2.c:6059:1: internal compiler
error: in extract_constrain_insn, at rec\
og.c:2190
0xdaccab _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/export/users/kyukhin/gcc/git/gcc2/gcc/rtl-error.c:108
0xdacd0b _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/export/users/kyukhin/gcc/git/gcc2/gcc/rtl-error.c:119
0xd50b31 extract_constrain_insn(rtx_insn*)
/export/users/kyukhin/gcc/git/gcc2/gcc/recog.c:2190
0xd5f1d3 copyprop_hardreg_forward_1
/export/users/kyukhin/gcc/git/gcc2/gcc/regcprop.c:774
0xd60afe execute
/export/users/kyukhin/gcc/git/gcc2/gcc/regcprop.c:1280
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Please include the complete backtrace with any bug report.
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