[Bug other/58578] New: mpfr tasinh test doesn't terminate when built with trunk for ARM

[Bug other/58578] New: mpfr tasinh test doesn't terminate when built with trunk for ARM

[kuganv at linaro dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58578

            Bug ID: 58578
           Summary: mpfr tasinh test doesn't terminate when built with
                    trunk for ARM
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: other
          Assignee: unassigned at gcc dot gnu.org
          Reporter: kuganv at linaro dot org

Created attachment 30936
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30936&action=edit
preprocessed testcase

mpfr tasinh 3.1.1. does not produce correct code for optimization level -O1 and
above. Preprocessed ouput for a reduced testcase is attached. For the reduced
testcase, if-condition at line 45 (original source) is evaluated true whereas
it is not when compiled with -O1 and run. This can be easily verified with gdb.

gcc version 4.9.0 20130922 (experimental)

[Bug other/58578] [4.9 Regression] mpfr tasinh test doesn't terminate when built with trunk for ARM

[rearnsha at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58578

Richard Earnshaw <rearnsha at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2013-09-30
     Ever confirmed|0                           |1

--- Comment #1 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
Please can you add the output of gcc -v that was used when compiling this test.

[Bug other/58578] [4.9 Regression] mpfr tasinh test doesn't terminate when built with trunk for ARM

[rearnsha at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58578

--- Comment #2 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
I suspect this was introduced with r197527

[Bug other/58578] [4.9 Regression] mpfr tasinh test doesn't terminate when built with trunk for ARM

[clyon at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58578

--- Comment #4 from clyon at gcc dot gnu.org ---
Author: clyon
Date: Tue Oct  1 13:19:31 2013
New Revision: 203059

URL: http://gcc.gnu.org/viewcvs?rev=203059&root=gcc&view=rev
Log:
2013-10-01  Kugan Vivekanandarajah  <kuganv@linaro.org>

    gcc/
    PR target/58578
    Revert
    2013-04-05  Greta Yorsh  <Greta.Yorsh@arm.com>
    * config/arm/arm.md (arm_ashldi3_1bit):  define_insn into
    define_insn_and_split.
    (arm_ashrdi3_1bit,arm_lshrdi3_1bit): Likewise.
    (shiftsi3_compare): New pattern.
    (rrx): New pattern.
    * config/arm/unspecs.md (UNSPEC_RRX): New.

    gcc/testsuite
    PR target/58578
    * gcc.target/arm/pr58578.c: New test.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/arm/arm.md
    trunk/gcc/config/arm/unspecs.md
    trunk/gcc/testsuite/ChangeLog

[Bug other/58578] [4.9 Regression] mpfr tasinh test doesn't terminate when built with trunk for ARM

[rearnsha at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58578

Richard Earnshaw <rearnsha at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
         Resolution|---                         |FIXED

--- Comment #5 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
Faulty patch reverted.

[Bug other/58578] [4.9 Regression] mpfr tasinh test doesn't terminate when built with trunk for ARM

[clyon at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58578

--- Comment #6 from clyon at gcc dot gnu.org ---
Author: clyon
Date: Wed Oct  2 14:07:45 2013
New Revision: 203116

URL: http://gcc.gnu.org/viewcvs?rev=203116&root=gcc&view=rev
Log:
Add forgotten test case for r203059.

2013-10-01  Kugan Vivekanandarajah  <kuganv@linaro.org>

        gcc/testsuite
        PR target/58578
        * gcc.target/arm/pr58578.c: New test.


Added:
    trunk/gcc/testsuite/gcc.target/arm/pr58578.c

[Bug other/58578] [4.9 Regression] mpfr tasinh test doesn't terminate when built with trunk for ARM

[clyon at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58578

--- Comment #7 from clyon at gcc dot gnu.org ---
Author: clyon
Date: Wed Oct  2 22:12:37 2013
New Revision: 203137

URL: http://gcc.gnu.org/viewcvs?rev=203137&root=gcc&view=rev
Log:
2013-10-01  Kugan Vivekanandarajah  <kuganv@linaro.org>

    Backport from trunk r203059,203116.
    2013-10-01  Kugan Vivekanandarajah  <kuganv@linaro.org>

    PR target/58578
    Revert
    2013-04-05  Greta Yorsh  <Greta.Yorsh@arm.com>
    * config/arm/arm.md (arm_ashldi3_1bit):  define_insn into
    define_insn_and_split.
    (arm_ashrdi3_1bit,arm_lshrdi3_1bit): Likewise.
    (shiftsi3_compare): New pattern.
    (rrx): New pattern.
    * config/arm/unspecs.md (UNSPEC_RRX): New.

2013-10-01  Kugan Vivekanandarajah  <kuganv@linaro.org>

    Backport from trunk r203059,203116.
    2013-10-01  Kugan Vivekanandarajah  <kuganv@linaro.org>

    PR Target/58578
    * gcc.target/arm/pr58578.c: New test.


Modified:
    branches/linaro/gcc-4_8-branch/gcc/ChangeLog.linaro
    branches/linaro/gcc-4_8-branch/gcc/config/arm/arm.md
    branches/linaro/gcc-4_8-branch/gcc/config/arm/unspecs.md
    branches/linaro/gcc-4_8-branch/gcc/testsuite/ChangeLog.linaro