With revision r163997 this test passed.
>From revision r163998 and on, including at least r164242 this test has failed
as follows:
Running /tmp/reg_a4_998/gcc/gcc/testsuite/gfortran.dg/dg.exp ...
... (non-regressions elided)
FAIL: gfortran.dg/forall_4.f90 -O3 -g execution test
With the message in the logfile being:
Executing on host: /tmp/reg_a4_998/gccobj/gcc/testsuite/gfortran/../../gfortran
-B/tmp/reg_a4_998/gccobj/gcc/testsuite/gfortran/../../
/tmp/reg_a4_998/gcc/gcc/testsuite/gfortran.dg/forall_4.f90 -O3 -g
-pedantic-errors -isystem
/tmp/reg_a4_998/gccobj/cris-elf/./newlib/targ-include -isystem
/tmp/reg_a4_998/gcc/newlib/libc/include
-B/tmp/reg_a4_998/gccobj/cris-elf/./libgloss/cris/
-L/tmp/reg_a4_998/gccobj/cris-elf/./libgloss/cris
-L/tmp/reg_a4_998/gcc/libgloss/cris
-B/tmp/reg_a4_998/gccobj/cris-elf/./newlib/
-L/tmp/reg_a4_998/gccobj/cris-elf/./newlib -sim3
-B/tmp/reg_a4_998/gccobj/cris-elf/./libgfortran/.libs
-L/tmp/reg_a4_998/gccobj/cris-elf/./libgfortran/.libs
-L/tmp/reg_a4_998/gccobj/cris-elf/./libiberty -lm -o ./forall_4.exe
(timeout = 300)
PASS: gfortran.dg/forall_4.f90 -O3 -g (test for excess errors)
program stopped with signal 6.
FAIL: gfortran.dg/forall_4.f90 -O3 -g execution test
A shortened test-case is attached, in which the second call to abort is
executed. Apparently the "-g" is critical. There is the following
assembly-code difference without/with "-g". Note the actual *code* difference
among the expected debug-label differences, in which the comparison-part of the
cstore is lost:
...
@@ -62,18 +103,24 @@ _main:
cmpq 4,$r9
bne .L16
nop
+.LBE48:
+.LBE47:
+ .loc 1 32 0
clear.d [$sp+32]
clear.d [$sp+36]
clear.d [$sp+40]
clear.d [$sp+44]
- move.b 1,$r13
- cmp.d [$sp+16],$r13
+.LBB49:
+ .loc 1 33 0
seq $r9
- cmp.d [$sp+24],$r13
+ move.d [$sp+24],$r13
+ cmpq 1,$r13
seq $r13
lslq 16,$r13
or.d $r13,$r9
oR.d 16777472,$r9
+.LBE49:
+.LBB50:
move.b $r9,$r9
bne .L18
nop
...
There is no such actual code difference with r163997.
N.B: CRIS is a cc0 target.
Author of patch for this revision CC:ed.
--
Summary: [4.5 Regression]: gfortran.dg/forall_4.f90 -O3, wrong
code with -g
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: hp at gcc dot gnu dot org
GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: cris-axis-elf
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45656
