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* [Bug middle-end/45098] New: Missed induction variable optimization
@ 2010-07-28 2:39 carrot at google dot com
2010-07-30 17:23 ` [Bug middle-end/45098] " davidxl at gcc dot gnu dot org
2010-08-02 7:55 ` ramana at gcc dot gnu dot org
0 siblings, 2 replies; 20+ messages in thread
From: carrot at google dot com @ 2010-07-28 2:39 UTC (permalink / raw)
To: gcc-bugs
Compile the following code with options -march=armv7-a -mthumb -Os
extern void foo(int*);
void tr(int array[], int n)
{
int i;
for (i=0; i<n; i++)
foo(&array[i]);
}
GCC 4.6 generates:
push {r4, r5, r6, lr}
mov r6, r1
mov r5, r0
movs r4, #0
b .L2
.L3:
mov r0, r5
adds r4, r4, #1
bl foo
adds r5, r5, #4
.L2:
cmp r4, r6
blt .L3
pop {r4, r5, r6, pc}
We can see that both r4 and r5 are loop induction variables, and r4 is used for
loop counter only. So we can transform it to
push {r4, r5, r6, lr}
mov r5, r0
add r6, r5, r1 << 2
b .L2
.L3:
mov r0, r5
bl foo
adds r5, r5, #4
.L2:
cmp r5, r6
blt .L3
pop {r4, r5, r6, pc}
This new code is shorter and faster than original result, it uses one less
register at the same time.
Both tree-ssa and rtl loop optimizations missed this optimization.
--
Summary: Missed induction variable optimization
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: middle-end
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: carrot at google dot com
GCC build triplet: i686-linux
GCC host triplet: i686-linux
GCC target triplet: arm-eabi
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45098
^ permalink raw reply [flat|nested] 20+ messages in thread
* [Bug middle-end/45098] Missed induction variable optimization
2010-07-28 2:39 [Bug middle-end/45098] New: Missed induction variable optimization carrot at google dot com
@ 2010-07-30 17:23 ` davidxl at gcc dot gnu dot org
2010-08-02 7:55 ` ramana at gcc dot gnu dot org
1 sibling, 0 replies; 20+ messages in thread
From: davidxl at gcc dot gnu dot org @ 2010-07-30 17:23 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from davidxl at gcc dot gnu dot org 2010-07-30 17:23 -------
Seems -Os specific -- also reproducible on x86. With -O2, the result is
expected.
David
--
davidxl at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |davidxl at gcc dot gnu dot
| |org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45098
^ permalink raw reply [flat|nested] 20+ messages in thread
* [Bug middle-end/45098] Missed induction variable optimization
2010-07-28 2:39 [Bug middle-end/45098] New: Missed induction variable optimization carrot at google dot com
2010-07-30 17:23 ` [Bug middle-end/45098] " davidxl at gcc dot gnu dot org
@ 2010-08-02 7:55 ` ramana at gcc dot gnu dot org
1 sibling, 0 replies; 20+ messages in thread
From: ramana at gcc dot gnu dot org @ 2010-08-02 7:55 UTC (permalink / raw)
To: gcc-bugs
--
ramana at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Keywords| |missed-optimization
Last reconfirmed|0000-00-00 00:00:00 |2010-08-02 07:55:00
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45098
^ permalink raw reply [flat|nested] 20+ messages in thread
* [Bug middle-end/45098] Missed induction variable optimization
[not found] <bug-45098-4@http.gcc.gnu.org/bugzilla/>
` (15 preceding siblings ...)
2011-06-16 18:01 ` vries at gcc dot gnu.org
@ 2011-07-11 16:32 ` vries at gcc dot gnu.org
16 siblings, 0 replies; 20+ messages in thread
From: vries at gcc dot gnu.org @ 2011-07-11 16:32 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45098
vries at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Version|4.6.0 |4.7.0
Resolution| |FIXED
Target Milestone|--- |3.1.x/3.2.x
--- Comment #18 from vries at gcc dot gnu.org 2011-07-11 16:31:56 UTC ---
All ivopts improvements related to this example for -march=armv7-a -mthumb -Os
are committed to trunk. Regression test are in place. Closing bug.
^ permalink raw reply [flat|nested] 20+ messages in thread
* [Bug middle-end/45098] Missed induction variable optimization
[not found] <bug-45098-4@http.gcc.gnu.org/bugzilla/>
` (14 preceding siblings ...)
2011-06-16 17:58 ` vries at gcc dot gnu.org
@ 2011-06-16 18:01 ` vries at gcc dot gnu.org
2011-07-11 16:32 ` vries at gcc dot gnu.org
16 siblings, 0 replies; 20+ messages in thread
From: vries at gcc dot gnu.org @ 2011-06-16 18:01 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45098
--- Comment #17 from vries at gcc dot gnu.org 2011-06-16 18:00:57 UTC ---
Author: vries
Date: Thu Jun 16 18:00:54 2011
New Revision: 175106
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=175106
Log:
2011-06-16 Tom de Vries <tom@codesourcery.com>
PR target/45098
* gcc.target/arm/ivopts-3.c: Update test.
* gcc.target/arm/ivopts-5.c: Same.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.target/arm/ivopts-3.c
trunk/gcc/testsuite/gcc.target/arm/ivopts-5.c
^ permalink raw reply [flat|nested] 20+ messages in thread
* [Bug middle-end/45098] Missed induction variable optimization
[not found] <bug-45098-4@http.gcc.gnu.org/bugzilla/>
` (13 preceding siblings ...)
2011-06-14 15:05 ` vries at gcc dot gnu.org
@ 2011-06-16 17:58 ` vries at gcc dot gnu.org
2011-06-16 18:01 ` vries at gcc dot gnu.org
2011-07-11 16:32 ` vries at gcc dot gnu.org
16 siblings, 0 replies; 20+ messages in thread
From: vries at gcc dot gnu.org @ 2011-06-16 17:58 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45098
--- Comment #16 from vries at gcc dot gnu.org 2011-06-16 17:57:12 UTC ---
Author: vries
Date: Thu Jun 16 17:57:08 2011
New Revision: 175105
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=175105
Log:
2011-06-16 Tom de Vries <tom@codesourcery.com>
PR target/45098
* tree-ssa-loop-niter.c (infer_loop_bounds_from_pointer_arith): Disallow
NULL pointer for pointer arithmetic.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-ssa-loop-niter.c
^ permalink raw reply [flat|nested] 20+ messages in thread
* [Bug middle-end/45098] Missed induction variable optimization
[not found] <bug-45098-4@http.gcc.gnu.org/bugzilla/>
` (12 preceding siblings ...)
2011-06-14 14:30 ` vries at gcc dot gnu.org
@ 2011-06-14 15:05 ` vries at gcc dot gnu.org
2011-06-16 17:58 ` vries at gcc dot gnu.org
` (2 subsequent siblings)
16 siblings, 0 replies; 20+ messages in thread
From: vries at gcc dot gnu.org @ 2011-06-14 15:05 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45098
--- Comment #15 from vries at gcc dot gnu.org 2011-06-14 15:05:29 UTC ---
Author: vries
Date: Tue Jun 14 15:05:26 2011
New Revision: 175025
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=175025
Log:
2011-06-14 Tom de Vries <tom@codesourcery.com>
PR target/45098
* gcc.target/arm/ivopts-3.c: New test.
* gcc.target/arm/ivopts-4.c: New test.
* gcc.target/arm/ivopts-5.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/arm/ivopts-3.c
trunk/gcc/testsuite/gcc.target/arm/ivopts-4.c
trunk/gcc/testsuite/gcc.target/arm/ivopts-5.c
Modified:
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 20+ messages in thread
* [Bug middle-end/45098] Missed induction variable optimization
[not found] <bug-45098-4@http.gcc.gnu.org/bugzilla/>
` (11 preceding siblings ...)
2011-06-04 8:43 ` vries at gcc dot gnu.org
@ 2011-06-14 14:30 ` vries at gcc dot gnu.org
2011-06-14 15:05 ` vries at gcc dot gnu.org
` (3 subsequent siblings)
16 siblings, 0 replies; 20+ messages in thread
From: vries at gcc dot gnu.org @ 2011-06-14 14:30 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45098
--- Comment #14 from vries at gcc dot gnu.org 2011-06-14 14:30:01 UTC ---
Author: vries
Date: Tue Jun 14 14:29:58 2011
New Revision: 175022
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=175022
Log:
2011-06-14 Zdenek Dvorak <ook@ucw.cz>
Tom de Vries <tom@codesourcery.com>
PR target/45098
* cfgloop.h (nb_iterations_upper_bound, nb_iterations_estimate):
Document changed semantics.
(max_stmt_executions, max_stmt_executions_int): Declare.
* tree-data-ref.c (estimated_loop_iterations)
(estimated_loop_iterations_int): Move functions...
* tree-ssa-loop-niter.c (estimated_loop_iterations)
(estimated_loop_iterations_int): here.
(record_estimate): Change nb_iterations_upper_bound and
nb_iterations_estimate semantics.
(max_stmt_executions, max_stmt_executions_int): New function.
* tree-data-ref.c (estimated_loop_iterations_tree): Rename to ...
(max_stmt_executions_tree): this.
(analyze_miv_subscript): Use max_stmt_executions_tree instead of
estimated_loop_iterations_tree.
tree-ssa-loop-ivopts.c (avg_loop_niter): Use
max_stmt_executions_int instead of estimated_loop_iterations_int.
* predict.c (predict_loops): Idem.
* tree-parloops.c (parallelize_loops): Idem.
* tree-data-ref.c (analyze_siv_subscript_cst_affine)
(compute_overlap_steps_for_affine_1_2, analyze_subscript_affine_affine)
(init_omega_for_ddr_1): Idem.
* tree-ssa-loop-prefetch.c (determine_loop_nest_reuse)
(loop_prefetch_arrays): Idem
* graphite-sese-to-poly.c (build_loop_iteration_domains): Use
max_stmt_executions instead of estimated_loop_iterations.
* tree-data-ref.c (estimated_loop_iterations_tree): Idem.
* tree-vrp.c (adjust_range_with_scev): Use estimated_loop_iterations
instead of nb_iterations_upper_bound.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/cfgloop.h
trunk/gcc/graphite-sese-to-poly.c
trunk/gcc/predict.c
trunk/gcc/tree-data-ref.c
trunk/gcc/tree-parloops.c
trunk/gcc/tree-ssa-loop-ivopts.c
trunk/gcc/tree-ssa-loop-niter.c
trunk/gcc/tree-ssa-loop-prefetch.c
trunk/gcc/tree-vrp.c
^ permalink raw reply [flat|nested] 20+ messages in thread
* [Bug middle-end/45098] Missed induction variable optimization
[not found] <bug-45098-4@http.gcc.gnu.org/bugzilla/>
` (10 preceding siblings ...)
2011-06-04 8:21 ` ramana at gcc dot gnu.org
@ 2011-06-04 8:43 ` vries at gcc dot gnu.org
2011-06-14 14:30 ` vries at gcc dot gnu.org
` (4 subsequent siblings)
16 siblings, 0 replies; 20+ messages in thread
From: vries at gcc dot gnu.org @ 2011-06-04 8:43 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45098
--- Comment #13 from vries at gcc dot gnu.org 2011-06-04 08:42:29 UTC ---
> Tom can this now be marked as being fixed for 4.7.0 ?
I'm still discussing one patch with Zdenek. Latest gcc-patches mail on this is
http://gcc.gnu.org/ml/gcc-patches/2011-05/msg02384.html.
^ permalink raw reply [flat|nested] 20+ messages in thread
* [Bug middle-end/45098] Missed induction variable optimization
[not found] <bug-45098-4@http.gcc.gnu.org/bugzilla/>
` (9 preceding siblings ...)
2011-05-23 8:17 ` vries at gcc dot gnu.org
@ 2011-06-04 8:21 ` ramana at gcc dot gnu.org
2011-06-04 8:43 ` vries at gcc dot gnu.org
` (5 subsequent siblings)
16 siblings, 0 replies; 20+ messages in thread
From: ramana at gcc dot gnu.org @ 2011-06-04 8:21 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45098
Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ramana at gcc dot gnu.org,
| |vries at gcc dot gnu.org
--- Comment #12 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> 2011-06-04 08:20:52 UTC ---
Tom can this now be marked as being fixed for 4.7.0 ?
Ramana
^ permalink raw reply [flat|nested] 20+ messages in thread
* [Bug middle-end/45098] Missed induction variable optimization
[not found] <bug-45098-4@http.gcc.gnu.org/bugzilla/>
` (8 preceding siblings ...)
2011-05-23 7:26 ` vries at gcc dot gnu.org
@ 2011-05-23 8:17 ` vries at gcc dot gnu.org
2011-06-04 8:21 ` ramana at gcc dot gnu.org
` (6 subsequent siblings)
16 siblings, 0 replies; 20+ messages in thread
From: vries at gcc dot gnu.org @ 2011-05-23 8:17 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45098
--- Comment #11 from vries at gcc dot gnu.org 2011-05-23 07:28:03 UTC ---
Author: vries
Date: Mon May 23 07:27:59 2011
New Revision: 174056
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=174056
Log:
2011-05-23 Tom de Vries <tom@codesourcery.com>
PR target/45098
* tree-ssa-loop-niter.c (infer_loop_bounds_from_pointer_arith): New
function.
(infer_loop_bounds_from_undefined): Use new function.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-ssa-loop-niter.c
^ permalink raw reply [flat|nested] 20+ messages in thread
* [Bug middle-end/45098] Missed induction variable optimization
[not found] <bug-45098-4@http.gcc.gnu.org/bugzilla/>
` (7 preceding siblings ...)
2011-05-22 20:20 ` vries at gcc dot gnu.org
@ 2011-05-23 7:26 ` vries at gcc dot gnu.org
2011-05-23 8:17 ` vries at gcc dot gnu.org
` (7 subsequent siblings)
16 siblings, 0 replies; 20+ messages in thread
From: vries at gcc dot gnu.org @ 2011-05-23 7:26 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45098
--- Comment #10 from vries at gcc dot gnu.org 2011-05-23 07:00:07 UTC ---
Author: vries
Date: Mon May 23 07:00:02 2011
New Revision: 174055
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=174055
Log:
2011-05-23 Tom de Vries <tom@codesourcery.com>
PR target/45098
* gcc.target/arm/ivopts-6.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/arm/ivopts-6.c
Modified:
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 20+ messages in thread
* [Bug middle-end/45098] Missed induction variable optimization
[not found] <bug-45098-4@http.gcc.gnu.org/bugzilla/>
` (6 preceding siblings ...)
2011-05-22 19:14 ` vries at gcc dot gnu.org
@ 2011-05-22 20:20 ` vries at gcc dot gnu.org
2011-05-23 7:26 ` vries at gcc dot gnu.org
` (8 subsequent siblings)
16 siblings, 0 replies; 20+ messages in thread
From: vries at gcc dot gnu.org @ 2011-05-22 20:20 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45098
--- Comment #9 from vries at gcc dot gnu.org 2011-05-22 19:57:22 UTC ---
Author: vries
Revision: 174033
Modified property: svn:log
Modified: svn:log at Sun May 22 19:57:20 2011
------------------------------------------------------------------------------
--- svn:log (original)
+++ svn:log Sun May 22 19:57:20 2011
@@ -1,5 +1,5 @@
2011-05-22 Tom de Vries <tom@codesourcery.com>
PR target/45098
- * tree-ssa-loop-ivopts.c (force_expr_to_var_cost): Fixed const test
+ * tree-ssa-loop-ivopts.c (force_expr_to_var_cost): Fix const test
for call to get_shiftadd_cost.
^ permalink raw reply [flat|nested] 20+ messages in thread
* [Bug middle-end/45098] Missed induction variable optimization
[not found] <bug-45098-4@http.gcc.gnu.org/bugzilla/>
` (5 preceding siblings ...)
2011-05-20 20:00 ` vries at gcc dot gnu.org
@ 2011-05-22 19:14 ` vries at gcc dot gnu.org
2011-05-22 20:20 ` vries at gcc dot gnu.org
` (9 subsequent siblings)
16 siblings, 0 replies; 20+ messages in thread
From: vries at gcc dot gnu.org @ 2011-05-22 19:14 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45098
--- Comment #8 from vries at gcc dot gnu.org 2011-05-22 18:57:21 UTC ---
Author: vries
Date: Sun May 22 18:57:19 2011
New Revision: 174033
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=174033
Log:
2011-05-22 Tom de Vries <tom@codesourcery.com>
PR target/45098
* tree-ssa-loop-ivopts.c (force_expr_to_var_cost): Fixed const test
for call to get_shiftadd_cost.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-ssa-loop-ivopts.c
^ permalink raw reply [flat|nested] 20+ messages in thread
* [Bug middle-end/45098] Missed induction variable optimization
[not found] <bug-45098-4@http.gcc.gnu.org/bugzilla/>
` (4 preceding siblings ...)
2011-05-19 10:01 ` vries at gcc dot gnu.org
@ 2011-05-20 20:00 ` vries at gcc dot gnu.org
2011-05-22 19:14 ` vries at gcc dot gnu.org
` (10 subsequent siblings)
16 siblings, 0 replies; 20+ messages in thread
From: vries at gcc dot gnu.org @ 2011-05-20 20:00 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45098
--- Comment #7 from vries at gcc dot gnu.org 2011-05-20 19:32:33 UTC ---
Author: vries
Date: Fri May 20 19:32:30 2011
New Revision: 173976
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=173976
Log:
2011-05-20 Tom de Vries <tom@codesourcery.com>
PR target/45098
* tree-ssa-loop-ivopts.c: Include expmed.h.
(get_shiftadd_cost): New function.
(force_expr_to_var_cost): Declare forward. Use get_shiftadd_cost.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-ssa-loop-ivopts.c
^ permalink raw reply [flat|nested] 20+ messages in thread
* [Bug middle-end/45098] Missed induction variable optimization
[not found] <bug-45098-4@http.gcc.gnu.org/bugzilla/>
` (3 preceding siblings ...)
2011-05-19 9:21 ` vries at gcc dot gnu.org
@ 2011-05-19 10:01 ` vries at gcc dot gnu.org
2011-05-20 20:00 ` vries at gcc dot gnu.org
` (11 subsequent siblings)
16 siblings, 0 replies; 20+ messages in thread
From: vries at gcc dot gnu.org @ 2011-05-19 10:01 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45098
--- Comment #6 from vries at gcc dot gnu.org 2011-05-19 09:33:52 UTC ---
Author: vries
Date: Thu May 19 09:33:49 2011
New Revision: 173896
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=173896
Log:
2011-05-19 Tom de Vries <tom@codesourcery.com>
PR target/45098
* gcc.target/arm/ivopts.c: New test.
* gcc.target/arm/ivopts-2.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/arm/ivopts-2.c
trunk/gcc/testsuite/gcc.target/arm/ivopts.c
Modified:
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 20+ messages in thread
* [Bug middle-end/45098] Missed induction variable optimization
[not found] <bug-45098-4@http.gcc.gnu.org/bugzilla/>
` (2 preceding siblings ...)
2011-05-19 9:02 ` vries at gcc dot gnu.org
@ 2011-05-19 9:21 ` vries at gcc dot gnu.org
2011-05-19 10:01 ` vries at gcc dot gnu.org
` (12 subsequent siblings)
16 siblings, 0 replies; 20+ messages in thread
From: vries at gcc dot gnu.org @ 2011-05-19 9:21 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45098
--- Comment #5 from vries at gcc dot gnu.org 2011-05-19 09:03:15 UTC ---
Author: vries
Date: Thu May 19 09:03:12 2011
New Revision: 173894
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=173894
Log:
2011-05-19 Tom de Vries <tom@codesourcery.com>
PR target/45098
* tree-ssa-loop-ivopts.c (get_expr_id): Factored new function out of
get_loop_invariant_expr_id.
(get_loop_invariant_expr_id): Use get_expr_id.
(parm_decl_cost): New function.
(determine_use_iv_cost_condition): Use get_expr_id and parm_decl_cost.
Improve bound cost estimation. Use different inv_expr_id for elim and
express cases.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-ssa-loop-ivopts.c
^ permalink raw reply [flat|nested] 20+ messages in thread
* [Bug middle-end/45098] Missed induction variable optimization
[not found] <bug-45098-4@http.gcc.gnu.org/bugzilla/>
2011-05-18 10:43 ` vries at gcc dot gnu.org
2011-05-18 19:04 ` vries at gcc dot gnu.org
@ 2011-05-19 9:02 ` vries at gcc dot gnu.org
2011-05-19 9:21 ` vries at gcc dot gnu.org
` (13 subsequent siblings)
16 siblings, 0 replies; 20+ messages in thread
From: vries at gcc dot gnu.org @ 2011-05-19 9:02 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45098
--- Comment #4 from vries at gcc dot gnu.org 2011-05-19 08:49:32 UTC ---
Author: vries
Date: Thu May 19 08:49:28 2011
New Revision: 173893
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=173893
Log:
2011-05-19 Tom de Vries <tom@codesourcery.com>
PR target/45098
* tree-ssa-loop-ivopts.c (determine_iv_cost): Prevent
cost_base.cost == 0.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-ssa-loop-ivopts.c
^ permalink raw reply [flat|nested] 20+ messages in thread
* [Bug middle-end/45098] Missed induction variable optimization
[not found] <bug-45098-4@http.gcc.gnu.org/bugzilla/>
2011-05-18 10:43 ` vries at gcc dot gnu.org
@ 2011-05-18 19:04 ` vries at gcc dot gnu.org
2011-05-19 9:02 ` vries at gcc dot gnu.org
` (14 subsequent siblings)
16 siblings, 0 replies; 20+ messages in thread
From: vries at gcc dot gnu.org @ 2011-05-18 19:04 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45098
--- Comment #3 from vries at gcc dot gnu.org 2011-05-18 18:27:15 UTC ---
Author: vries
Date: Wed May 18 18:27:11 2011
New Revision: 173872
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=173872
Log:
2011-05-18 Tom de Vries <tom@codesourcery.com>
PR target/45098
* tree-ssa-loop-ivopts.c (computation_cost): Prevent cost of 0.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-ssa-loop-ivopts.c
^ permalink raw reply [flat|nested] 20+ messages in thread
* [Bug middle-end/45098] Missed induction variable optimization
[not found] <bug-45098-4@http.gcc.gnu.org/bugzilla/>
@ 2011-05-18 10:43 ` vries at gcc dot gnu.org
2011-05-18 19:04 ` vries at gcc dot gnu.org
` (15 subsequent siblings)
16 siblings, 0 replies; 20+ messages in thread
From: vries at gcc dot gnu.org @ 2011-05-18 10:43 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45098
--- Comment #2 from vries at gcc dot gnu.org 2011-05-18 10:20:59 UTC ---
Author: vries
Date: Wed May 18 10:20:55 2011
New Revision: 173853
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=173853
Log:
2011-05-18 Tom de Vries <tom@codesourcery.com>
PR target/45098
* tree-ssa-loop-ivopts.c (seq_cost): Fix call to rtx_cost.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-ssa-loop-ivopts.c
^ permalink raw reply [flat|nested] 20+ messages in thread
end of thread, other threads:[~2011-07-11 16:32 UTC | newest]
Thread overview: 20+ messages (download: mbox.gz / follow: Atom feed)
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2010-07-28 2:39 [Bug middle-end/45098] New: Missed induction variable optimization carrot at google dot com
2010-07-30 17:23 ` [Bug middle-end/45098] " davidxl at gcc dot gnu dot org
2010-08-02 7:55 ` ramana at gcc dot gnu dot org
[not found] <bug-45098-4@http.gcc.gnu.org/bugzilla/>
2011-05-18 10:43 ` vries at gcc dot gnu.org
2011-05-18 19:04 ` vries at gcc dot gnu.org
2011-05-19 9:02 ` vries at gcc dot gnu.org
2011-05-19 9:21 ` vries at gcc dot gnu.org
2011-05-19 10:01 ` vries at gcc dot gnu.org
2011-05-20 20:00 ` vries at gcc dot gnu.org
2011-05-22 19:14 ` vries at gcc dot gnu.org
2011-05-22 20:20 ` vries at gcc dot gnu.org
2011-05-23 7:26 ` vries at gcc dot gnu.org
2011-05-23 8:17 ` vries at gcc dot gnu.org
2011-06-04 8:21 ` ramana at gcc dot gnu.org
2011-06-04 8:43 ` vries at gcc dot gnu.org
2011-06-14 14:30 ` vries at gcc dot gnu.org
2011-06-14 15:05 ` vries at gcc dot gnu.org
2011-06-16 17:58 ` vries at gcc dot gnu.org
2011-06-16 18:01 ` vries at gcc dot gnu.org
2011-07-11 16:32 ` vries at gcc dot gnu.org
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