https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78023
Bug ID: 78023
Summary: ice in replace_one_candidate with -O3 and
-march=native
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
Created attachment 39831
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=39831&action=edit
C source code after creduce
The attached C code, when compiled by gcc trunk dated 20161018,
and compiler flags -O3 -march=native, does this:
$ ../results/bin/gcc -c -O3 -march=native bug312.c
../../src/H5Tconv.c: In function ‘H5T__conv_int_float’:
../../src/H5Tconv.c:7558:1: internal compiler error: in replace_one_candidate,
at gimple-ssa-strength-reduction.c:3375
0x139c70e replace_one_candidate
../../trunk/gcc/gimple-ssa-strength-reduction.c:3375
0x13a1359 replace_profitable_candidates
../../trunk/gcc/gimple-ssa-strength-reduction.c:3486
0x13a13a5 replace_profitable_candidates
../../trunk/gcc/gimple-ssa-strength-reduction.c:3495
0x13a504f analyze_candidates_and_replace
../../trunk/gcc/gimple-ssa-strength-reduction.c:3574
The processor has this in /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 21
model : 2
model name : AMD FX(tm)-8350 Eight-Core Processor
stepping : 0
microcode : 0x600084f
cpu MHz : 4000.000
cache size : 2048 KB
physical id : 0
siblings : 8
core id : 0
cpu cores : 4
apicid : 16
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clf
lush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm
constant_tsc rep_good
nopl nonstop_tsc extd_apicid aperfmperf eagerfpu pni pclmulqdq monitor ssse3
fma cx16 sse4_1
sse4_2 popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm
sse4a misalign
sse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm topoext
perfctr_core pe
rfctr_nb cpb hw_pstate vmmcall bmi1 arat npt lbrv svm_lock nrip_save tsc_scale
vmcb_clean flu
shbyasid decodeassists pausefilter pfthreshold
bugs : fxsave_leak sysret_ss_attrs null_seg
bogomips : 8026.96
TLB size : 1536 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management: ts ttp tm 100mhzsteps hwpstate cpb eff_freq_ro
