Hi!
This testcase contains an out-of-bound access, which isn't necessary for the
thing the testcase tests. I've verified that both the original and patched
testcase hangs r233928 and succeeds with r233934 and committed to trunk
as obvious.
2017-09-04 Jakub Jelinek <ja...@redhat.com>
PR tree-optimization/70043
PR testsuite/82093
* gfortran.dg/vect/pr70043.f90 (fn1): Start loop from 1 instead of 0.
--- gcc/testsuite/gfortran.dg/vect/pr70043.f90.jj 2016-03-03
15:28:39.000000000 +0100
+++ gcc/testsuite/gfortran.dg/vect/pr70043.f90 2017-09-04 09:49:20.261236667
+0200
@@ -1,4 +1,5 @@
-! { dg-do compile }
+! PR tree-optimization/70043
+! { dg-do compile }
! { dg-additional-options "-Ofast -g" }
! { dg-additional-options "-march=haswell" { target i?86-*-* x86_64-*-* } }
@@ -6,7 +7,7 @@ subroutine fn1(a, b)
real(8), intent(in) :: b(100)
real(8), intent(inout) :: a(100)
real(8) c
- do i=0,100
+ do i=1,100
if( a(i) < 0.0 ) then
c = a(i) * b(i)
a(i) = a(i) - c / b(i)
Jakub
