http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58472
--- Comment #11 from Jakub Jelinek ---
Author: jakub
Date: Thu Sep 19 17:03:51 2013
New Revision: 202750
URL: http://gcc.gnu.org/viewcvs?rev=202750&root=gcc&view=rev
Log:
PR tree-optimization/58472
* c-c++-common/gomp/pr58472.c: New test.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58472
--- Comment #10 from Jakub Jelinek ---
Author: jakub
Date: Thu Sep 19 16:56:40 2013
New Revision: 202748
URL: http://gcc.gnu.org/viewcvs?rev=202748&root=gcc&view=rev
Log:
PR tree-optimization/58472
* tree-vect-stmts.c (vectorizable_store,
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58472
--- Comment #9 from vincenzo Innocente ---
w/o opening another bug report
c++ -O2 -S omp4red.cc -fopenmp -Wall
omp4red.cc: In function ‘float sumO1()’:
omp4red.cc:6:9: warning: ‘simduid.0’ is used uninitialized in this function
[-Wuninitialized
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58472
--- Comment #8 from vincenzo Innocente ---
Yes I compile gcc with -O2 -ftree-vectorize
on linux I also do bootstrap-lto
strange that the compiler does not warn about this uninitialized variable:
it does for a couple of others that force me to com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58472
--- Comment #7 from Jakub Jelinek ---
I bet the difference is probably that your tree-vect-stmts.o has been compiled
with -O2, while mine with -O0.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58472
--- Comment #6 from vincenzo Innocente ---
seems so
gcc -O2 libgomp/testsuite/libgomp.c/simd-4.c -fopenmp
c++ -O2 -S omp4red.cc -fopenmp| cat omp4red.s
.text
.align 4,0x90
.globl __Z5sumO1v
__Z5sumO1v:
LFB0:
etc
could you please
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58472
Jakub Jelinek changed:
What|Removed |Added
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed|
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58472
--- Comment #4 from vincenzo Innocente ---
gcc -O2 libgomp/testsuite/libgomp.c/simd-3.c -fopenmp
libgomp/testsuite/libgomp.c/simd-3.c: In function ‘foo’:
libgomp/testsuite/libgomp.c/simd-3.c:14:1: internal compiler error: in
vectorizable_store, a
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58472
--- Comment #3 from vincenzo Innocente ---
on linux
c++ -O2 -ftree-vectorizer-verbose=1 -S omp4red.cc -fopenmp
omp4red.cc:8:13: note: loop vectorized
omp4red.cc: In function 'float sumO1()':
omp4red.cc:4:7: internal compiler error: in vectori
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58472
--- Comment #2 from vincenzo Innocente ---
yes
cat omp4red.cc
float a[1024];
float b[1024];
float sumO1() {
float s = 0.f;
#pragma omp simd reduction(+:s)
for (int i=0;i<1024;++i) {
s += a[i]*b[i];
}
return s;
}
pb-d-128-141-131-26:ve
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58472
Marek Polacek changed:
What|Removed |Added
CC||mpolacek at gcc dot gnu.org
--- Comment #
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