https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83474
Bug ID: 83474
Summary: [8 Regression] ICE: in probability_in, at
profile-count.h:1038
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: luis.machado at linaro dot org
Target Milestone: ---
Created attachment 42911
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42911&action=edit
Reproducer testcase
I ran into this ICE when attempting to build CPU2017's 502.gcc_r/602.gcc_s
benchmarks with loop array prefetching enabled on aarch64 and GCC 8.
It also happens on x86 if that optimization is enabled.
At this time i don't have data on which exact commit caused this failure, but
some investigation shows the following commit added the assertion that is
triggering the ICE in probability_in.
commit 205ce1aa3b50814847900daf8d9ef78b30270a97
Author: hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Fri Nov 3 15:42:30 2017 +0000
Output of 'gcc -v'
Target: x86_64-pc-linux-gnu
Configured with: ../gcc/configure --enable-languages=c,c++
Thread model: posix
gcc version 8.0.0 20171218 (experimental) (GCC)
To reproduce:
gcc -c -S testcase.i -O3 -fprefetch-loop-arrays
