[Bug target/78603] internal compiler error: in dwarf2out_var_location, at dwarf2out.c:21846

[jcmvbkbc at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78603

--- Comment #7 from jcmvbkbc at gcc dot gnu.org ---
*** Bug 67586 has been marked as a duplicate of this bug. ***

[Bug target/78603] internal compiler error: in dwarf2out_var_location, at dwarf2out.c:21846

[jcmvbkbc at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78603

--- Comment #6 from jcmvbkbc at gcc dot gnu.org ---
Author: jcmvbkbc
Date: Wed May 31 00:05:38 2017
New Revision: 248714

URL: https://gcc.gnu.org/viewcvs?rev=248714=gcc=rev
Log:
xtensa: Fix PR target/78603

2017-05-30  Max Filippov  
gcc/
Backport from mainline
2016-11-29  Max Filippov  

* config/xtensa/xtensa.c (hwloop_optimize): Don't emit zero
overhead loop start between a call and its CALL_ARG_LOCATION
note.


Modified:
branches/gcc-6-branch/gcc/ChangeLog
branches/gcc-6-branch/gcc/config/xtensa/xtensa.c

[Bug target/78603] internal compiler error: in dwarf2out_var_location, at dwarf2out.c:21846

[jcmvbkbc at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78603

--- Comment #5 from jcmvbkbc at gcc dot gnu.org ---
Author: jcmvbkbc
Date: Tue May 30 23:41:58 2017
New Revision: 248708

URL: https://gcc.gnu.org/viewcvs?rev=248708=gcc=rev
Log:
xtensa: Fix PR target/78603

2017-05-30  Max Filippov  
gcc/
Backport from mainline
2016-11-29  Max Filippov  

* config/xtensa/xtensa.c (hwloop_optimize): Don't emit zero
overhead loop start between a call and its CALL_ARG_LOCATION
note.


Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/config/xtensa/xtensa.c

[Bug target/78603] internal compiler error: in dwarf2out_var_location, at dwarf2out.c:21846

[jcmvbkbc at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78603

jcmvbkbc at gcc dot gnu.org changed:

   What|Removed |Added

 Status|UNCONFIRMED |RESOLVED
 Resolution|--- |FIXED

--- Comment #4 from jcmvbkbc at gcc dot gnu.org ---
Fixed.

[Bug target/78603] internal compiler error: in dwarf2out_var_location, at dwarf2out.c:21846

[jcmvbkbc at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78603

--- Comment #3 from jcmvbkbc at gcc dot gnu.org ---
Author: jcmvbkbc
Date: Tue Nov 29 22:22:13 2016
New Revision: 242979

URL: https://gcc.gnu.org/viewcvs?rev=242979=gcc=rev
Log:
xtensa: Fix PR target/78603

2016-11-29  Max Filippov  
gcc/
* config/xtensa/xtensa.c (hwloop_optimize): Don't emit zero
overhead loop start between a call and its CALL_ARG_LOCATION
note.


Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/xtensa/xtensa.c

[Bug target/78603] internal compiler error: in dwarf2out_var_location, at dwarf2out.c:21846

[jcmvbkbc at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78603

--- Comment #2 from jcmvbkbc at gcc dot gnu.org ---
Similar bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=48214
And looks like the same problem here: first instruction of zero overhead loop
got inserted between the call and its NOTE_INSN_CALL_ARG_LOCATION:

(call_insn 145 144 574 11 (set (reg:SI 10 a10)
(call (mem:SI (reg/f:SI 8 a8 [135]) [0 pj_thread_sleep S4 A32])
(const_int 0 [0]))) ../src/pjlib-test/thread.c:221 56
{call_value_internal}
 (expr_list:REG_DEAD (reg/f:SI 8 a8 [135])
(expr_list:REG_UNUSED (reg:SI 10 a10)
(expr_list:REG_CALL_DECL (symbol_ref:SI ("pj_thread_sleep") [flags
0x41]  )
(nil
(expr_list:SI (use (reg:SI 10 a10))
(nil)))

(insn 574 145 493 11 (parallel [
(set (pc)
(if_then_else (ne (reg:SI 2 a2 [198])
(const_int 1 [0x1]))
(label_ref 175)
(pc)))
(set (reg:SI 2 a2 [198])
(plus (reg:SI 2 a2 [198])
(const_int -1 [0x])))
(unspec [
(const_int 0 [0])
] 12)
]) ../src/pjlib-test/thread.c:221 -1
 (nil))

(note 493 574 494 11 (expr_list:REG_DEP_TRUE (concat:SI (pc)
(const (unspec [
(symbol_ref:SI ("pj_thread_sleep") [flags 0x41] 
)
] 3)))
(expr_list:REG_DEP_TRUE (concat:SI (reg:SI 10 a10)
(const_int 1000 [0x3e8]))
(nil))) NOTE_INSN_CALL_ARG_LOCATION)

[Bug target/78603] internal compiler error: in dwarf2out_var_location, at dwarf2out.c:21846

[jcmvbkbc at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78603

--- Comment #1 from jcmvbkbc at gcc dot gnu.org ---
Created attachment 40193
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40193=edit
additional patch on top of gcc-5.4.0