[Bug optimization/14119] New: libjava Array_3 test fails at -O1

[Bug optimization/14119] New: libjava Array_3 test fails at -O1

[amodra at bigpond dot net dot au]

I've been working on the hammer branch, and noticed the libjava Array_3 test
failing there but passing on mainline.  After looking in vain for the patch that
cured the problem on mainline, I realized the pass on mainline was because the
test has changed.  Mainline runs libjava tests at -O0 and -O3, hammer-3_3-branch
runs them at -O0 and -O1.  Running mainline (and gcc-3.4) tests at -O1 exhibits
the same failure:

LD_LIBRARY_PATH=../.libs:../../../gcc ./Array_3.exe
Exception in thread "main" java.lang.RuntimeException: test failed:4
[snip rest of output]

This appears to be a combine problem.

Array_3.java.19.life:

(insn 216 215 220 30
/src/gcc-current/libjava/testsuite/libjava.lang/Array_3.java:66 (set (reg/v:DI
119 [ ok ])
        (const_int 0 [0x0])) 324 {*movdi_internal64} (nil)
    (nil))

(note 220 216 222 30
("/src/gcc-current/libjava/testsuite/libjava.lang/Array_3.java") 69)

(note 222 220 225 30
("/src/gcc-current/libjava/testsuite/libjava.lang/Array_3.java") 70)

(insn 225 222 363 30
/src/gcc-current/libjava/testsuite/libjava.lang/Array_3.java:70 (set:DI (reg:DI
164 [ <variable>.length ])
        (zero_extend:DI (mem/s/j:SI (plus:DI (reg/v:DI 119 [ ok ])
                    (const_int 8 [0x8])) [0 <variable>.length+0 S4 A64]))) 12
{*rs6000.md:372} (insn_list 216 (nil))
    (expr_list:REG_UNUSED (reg:DI 164 [ <variable>.length ])
        (expr_list:REG_EH_REGION (const_int 7 [0x7])
            (nil))))


Array_3.java.20.combine:

(note 216 215 220 30 NOTE_INSN_DELETED)

(note 220 216 222 30
("/src/gcc-current/libjava/testsuite/libjava.lang/Array_3.java") 69)

(note 222 220 225 30
("/src/gcc-current/libjava/testsuite/libjava.lang/Array_3.java") 70)

(insn 225 222 421 30
/src/gcc-current/libjava/testsuite/libjava.lang/Array_3.java:70 (set (reg/v:DI
119 [ ok ])
        (const_int 0 [0x0])) 324 {*movdi_internal64} (nil)
    (nil))

-- 
           Summary: libjava Array_3 test fails at -O1
           Product: gcc
           Version: 3.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: amodra at bigpond dot net dot au
                CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: powerpc64-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14119

[Bug optimization/14119] libjava Array_3 test fails at -O1

[amodra at bigpond dot net dot au]

------- Additional Comments From amodra at bigpond dot net dot au  2004-02-11 23:45 -------
Looking into a fix

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |amodra at bigpond dot net
                   |dot org                     |dot au
             Status|UNCONFIRMED                 |ASSIGNED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14119

[Bug optimization/14119] libjava Array_3 test fails at -O1

[amodra at bigpond dot net dot au]

------- Additional Comments From amodra at bigpond dot net dot au  2004-02-12 01:11 -------
http://gcc.gnu.org/ml/gcc-patches/2004-02/msg01115.html

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |EH, patch, wrong-code


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14119

[Bug optimization/14119] libjava Array_3 test fails at -O1

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-02-15 12:56 -------
Subject: Bug 14119

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	hammer-3_3-branch
Changes by:	amodra@gcc.gnu.org	2004-02-15 12:56:35

Modified files:
	gcc            : ChangeLog.hammer combine.c 

Log message:
	PR optimization/14119
	* combine.c (try_combine): When attemting to fix unrecognized insns,
	don't delete SETs marked with REG_EH_REGION notes.  Also, don't split
	a PARALLEL when that results in the original insns.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.hammer.diff?cvsroot=gcc&only_with_tag=hammer-3_3-branch&r1=1.1.2.328&r2=1.1.2.329
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/combine.c.diff?cvsroot=gcc&only_with_tag=hammer-3_3-branch&r1=1.323.2.21&r2=1.323.2.22



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14119

[Bug optimization/14119] libjava Array_3 test fails at -O1

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-02-17 22:21 -------
Subject: Bug 14119

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	amodra@gcc.gnu.org	2004-02-17 22:21:00

Modified files:
	gcc            : ChangeLog combine.c 

Log message:
	PR optimization/14119
	* combine.c (try_combine): When attemting to fix unrecognized insns,
	don't delete SETs marked with REG_EH_REGION notes.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.2805&r2=2.2806
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/combine.c.diff?cvsroot=gcc&r1=1.409&r2=1.410



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14119

[Bug optimization/14119] libjava Array_3 test fails at -O1

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-02-17 22:28 -------
Subject: Bug 14119

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-3_4-branch
Changes by:	amodra@gcc.gnu.org	2004-02-17 22:28:40

Modified files:
	gcc            : ChangeLog combine.c 

Log message:
	PR optimization/14119
	* combine.c (try_combine): When attemting to fix unrecognized insns,
	don't delete SETs marked with REG_EH_REGION notes.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=2.2326.2.209&r2=2.2326.2.210
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/combine.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.400.4.4&r2=1.400.4.5



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14119

[Bug optimization/14119] libjava Array_3 test fails at -O1

[amodra at bigpond dot net dot au]

------- Additional Comments From amodra at bigpond dot net dot au  2004-02-17 22:39 -------
Fixed in 3.4 and 3.5

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14119

[Bug optimization/14119] libjava Array_3 test fails at -O1

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |3.4.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14119