[Bug rtl-optimization/45551] New: [4.6 Regression]: gcc.c-torture/execute/990326-1.c

hp at gcc dot gnu dot org gcc-bugzilla@gcc.gnu.org
Mon Sep 6 01:59:00 GMT 2010


With revision 163380 this test passed.
>From revision 163383 and on, this test has failed as follows:

Running /tmp/regressn1-383/gcc/gcc/testsuite/gcc.c-torture/execute/execute.exp
...
FAIL: gcc.c-torture/execute/990326-1.c execution,  -O2
FAIL: gcc.c-torture/execute/990326-1.c execution,  -O3 -fomit-frame-pointer
FAIL: gcc.c-torture/execute/990326-1.c execution,  -O3 -g
FAIL: gcc.c-torture/execute/990326-1.c execution,  -Os
FAIL: gcc.c-torture/execute/990326-1.c execution,  -O2 -flto
FAIL: gcc.c-torture/execute/990326-1.c execution,  -O2 -fwhopr

With the message in the logfile showing that abort was called.
RTL dumps show that the misoptimizing is done in the combine pass.
A simplified version of gcc.c-torture/execute/990326-1.c exposing the
miscompilation will be attached.

Author of the suspect patch CC:ed.


-- 
           Summary: [4.6 Regression]: gcc.c-torture/execute/990326-1.c
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Keywords: wrong-code
          Severity: normal
          Priority: P3
         Component: rtl-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=45551



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