Executing on host: /home/dave/gnu/gcc-4.0/objdir/gcc/xgcc -B/home/dave/gnu/gcc-4
.0/objdir/gcc/ /home/dave/gnu/gcc-4.0/gcc/gcc/testsuite/gcc.dg/fold-abs-2.c -O
1 -fwrapv -fno-show-column -lm -o ./fold-abs-2.exe (timeout = 300)
PASS: gcc.dg/fold-abs-2.c (test for excess errors)
Setting LD_LIBRARY_PATH to :/home/dave/gnu/gcc-4.0/objdir/gcc::/home/dave/gnu/gc
c-4.0/objdir/gcc:/usr/lib/debug
FAIL: gcc.dg/fold-abs-2.c execution test
.globl f
.type f, @function
f:
.PROC
.CALLINFO FRAME=0,NO_CALLS
.ENTRY
bv %r0(%r2)
ldi 1,%r28
.EXIT
.PROCEND
.size f, .-f
So, f always returns 1.
This appears to be a combine bug. We have the following in life:
;; Start of basic block 0, registers live: 3 [%r3] 26 [%r26] 30 [%r30]
(note 9 2 6 0 [bb 0] NOTE_INSN_BASIC_BLOCK)
(insn 6 9 7 0 (set (reg/v:SI 95 [ a ])
(reg:SI 26 %r26 [ a ])) 37 {*pa.md:2291} (nil)
(expr_list:REG_DEAD (reg:SI 26 %r26 [ a ])
(expr_list:REG_EQUIV (mem/i:SI (plus:SI (reg/f:SI 3 %r3)
(const_int -36 [0xffffffdc])) [0 a+0 S4 A32])
(nil))))
(note 7 6 11 0 NOTE_INSN_FUNCTION_BEG)
(insn 11 7 12 0 (set (reg:SI 97)
(abs:SI (reg/v:SI 95 [ a ]))) 22 {abssi2} (insn_list:REG_DEP_TRUE 6 (nil
))
(expr_list:REG_DEAD (reg/v:SI 95 [ a ])
(nil)))
(insn 12 11 13 0 (set (reg:SI 99)
(not:SI (reg:SI 97))) 131 {one_cmplsi2} (insn_list:REG_DEP_TRUE 11 (nil)
)
(expr_list:REG_DEAD (reg:SI 97)
(nil)))
(insn 13 12 17 0 (set (reg:SI 98)
(lshiftrt:SI (reg:SI 99)
(const_int 31 [0x1f]))) 178 {lshrsi3} (insn_list:REG_DEP_TRUE 12 (ni
l))
(expr_list:REG_DEAD (reg:SI 99)
(nil)))
(note 17 13 20 0 NOTE_INSN_FUNCTION_END)
(insn 20 17 26 0 (set (reg/i:SI 28 %r28 [ <result> ])
(reg:SI 98)) 37 {*pa.md:2291} (insn_list:REG_DEP_TRUE 13 (nil))
(expr_list:REG_DEAD (reg:SI 98)
(nil)))
(insn 26 20 0 0 (use (reg/i:SI 28 %r28 [ <result> ])) -1 (insn_list:REG_DEP_TRUE
20 (nil))
(nil))
;; End of basic block 0, registers live:
3 [%r3] 28 [%r28] 30 [%r30]
After combine, we have:
;; Start of basic block 0, registers live: 3 [%r3] 30 [%r30]
(note 9 2 6 0 [bb 0] NOTE_INSN_BASIC_BLOCK)
(note 6 9 7 0 NOTE_INSN_DELETED)
(note 7 6 11 0 NOTE_INSN_FUNCTION_BEG)
(note 11 7 12 0 NOTE_INSN_DELETED)
(note 12 11 13 0 NOTE_INSN_DELETED)
(note 13 12 17 0 NOTE_INSN_DELETED)
(note 17 13 20 0 NOTE_INSN_FUNCTION_END)
(insn 20 17 26 0 (set (reg/i:SI 28 %r28 [ <result> ])
(const_int 1 [0x1])) 37 {*pa.md:2291} (nil)
(nil))
(insn 26 20 0 0 (use (reg/i:SI 28 %r28 [ <result> ])) -1 (insn_list:REG_DEP_TRUE
20 (nil))
(nil))
;; End of basic block 0, registers live:
3 [%r3] 28 [%r28] 30 [%r30]
--
Summary: FAIL: gcc.dg/fold-abs-2.c execution test
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: rtl-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: danglin at gcc dot gnu dot org
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: hppa*-*-*
GCC host triplet: hppa*-*-*
GCC target triplet: hppa*-*-*
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23105
