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* [Bug tree-optimization/101805] New: Max<bool0,bool1> -> bool0 | bool1 Min<bool0, bool1> -> a & b
@ 2021-08-06 20:11 pinskia at gcc dot gnu.org
2021-08-06 21:50 ` [Bug tree-optimization/101805] " pinskia at gcc dot gnu.org
` (6 more replies)
0 siblings, 7 replies; 8+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-08-06 20:11 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101805
Bug ID: 101805
Summary: Max<bool0,bool1> -> bool0 | bool1 Min<bool0, bool1> ->
a & b
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: enhancement
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: pinskia at gcc dot gnu.org
Target Milestone: ---
Take:
int maxbool(bool ab, bool bb)
{
int a = ab;
int b = bb;
int c;
c = (a > b)?a : b;
return c;
}
int minbool(bool ab, bool bb)
{
int a = ab;
int b = bb;
int c;
c = (a < b)?a : b;
return c;
}
---- CUT ----
These two should be optimized to just:
int maxbool_or(bool ab, bool bb)
{
int c = ab | bb;
return c;
}
int minbool_and(bool ab, bool bb)
{
int c = ab & bb;
return c;
}
------ CUT----
GCC, ICC, clang nor MSVC do this optimization.
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug tree-optimization/101805] Max<bool0,bool1> -> bool0 | bool1 Min<bool0, bool1> -> a & b
2021-08-06 20:11 [Bug tree-optimization/101805] New: Max<bool0,bool1> -> bool0 | bool1 Min<bool0, bool1> -> a & b pinskia at gcc dot gnu.org
@ 2021-08-06 21:50 ` pinskia at gcc dot gnu.org
2021-08-14 0:21 ` pinskia at gcc dot gnu.org
` (5 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-08-06 21:50 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101805
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Assignee|unassigned at gcc dot gnu.org |pinskia at gcc dot gnu.org
Last reconfirmed| |2021-08-06
Ever confirmed|0 |1
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Mine.
#if GIMPLE
(match gimple_truth SSA_NAME@0
(if (get_nonzero_bits (@0) == 1)))
(simplify
(min gimple_truth@0 gimple_truth@1)
(bit_and @0 @1))
(simplify
(max gimple_truth@0 gimple_truth@1)
(bit_ior @0 @1))
#endif
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug tree-optimization/101805] Max<bool0,bool1> -> bool0 | bool1 Min<bool0, bool1> -> a & b
2021-08-06 20:11 [Bug tree-optimization/101805] New: Max<bool0,bool1> -> bool0 | bool1 Min<bool0, bool1> -> a & b pinskia at gcc dot gnu.org
2021-08-06 21:50 ` [Bug tree-optimization/101805] " pinskia at gcc dot gnu.org
@ 2021-08-14 0:21 ` pinskia at gcc dot gnu.org
2022-02-21 3:26 ` pinskia at gcc dot gnu.org
` (4 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-08-14 0:21 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101805
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
URL| |https://gcc.gnu.org/piperma
| |il/gcc-patches/2021-August/
| |577394.html
Keywords| |patch
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Patch submitted here:
https://gcc.gnu.org/pipermail/gcc-patches/2021-August/577394.html
Note it depends on
https://gcc.gnu.org/pipermail/gcc-patches/2021-August/577393.html
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug tree-optimization/101805] Max<bool0,bool1> -> bool0 | bool1 Min<bool0, bool1> -> a & b
2021-08-06 20:11 [Bug tree-optimization/101805] New: Max<bool0,bool1> -> bool0 | bool1 Min<bool0, bool1> -> a & b pinskia at gcc dot gnu.org
2021-08-06 21:50 ` [Bug tree-optimization/101805] " pinskia at gcc dot gnu.org
2021-08-14 0:21 ` pinskia at gcc dot gnu.org
@ 2022-02-21 3:26 ` pinskia at gcc dot gnu.org
2022-11-27 7:04 ` pinskia at gcc dot gnu.org
` (3 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: pinskia at gcc dot gnu.org @ 2022-02-21 3:26 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101805
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug tree-optimization/101805] Max<bool0,bool1> -> bool0 | bool1 Min<bool0, bool1> -> a & b
2021-08-06 20:11 [Bug tree-optimization/101805] New: Max<bool0,bool1> -> bool0 | bool1 Min<bool0, bool1> -> a & b pinskia at gcc dot gnu.org
` (2 preceding siblings ...)
2022-02-21 3:26 ` pinskia at gcc dot gnu.org
@ 2022-11-27 7:04 ` pinskia at gcc dot gnu.org
2023-05-15 21:51 ` pinskia at gcc dot gnu.org
` (2 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: pinskia at gcc dot gnu.org @ 2022-11-27 7:04 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101805
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note improvements to evrp does change the IR for -O2 for the C++ front-end.
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug tree-optimization/101805] Max<bool0,bool1> -> bool0 | bool1 Min<bool0, bool1> -> a & b
2021-08-06 20:11 [Bug tree-optimization/101805] New: Max<bool0,bool1> -> bool0 | bool1 Min<bool0, bool1> -> a & b pinskia at gcc dot gnu.org
` (3 preceding siblings ...)
2022-11-27 7:04 ` pinskia at gcc dot gnu.org
@ 2023-05-15 21:51 ` pinskia at gcc dot gnu.org
2023-05-16 1:38 ` pinskia at gcc dot gnu.org
2023-05-16 3:53 ` pinskia at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-05-15 21:51 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101805
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|patch |
URL|https://gcc.gnu.org/piperma |
|il/gcc-patches/2021-August/ |
|577394.html |
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
About to submit an updated version of this patch.
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug tree-optimization/101805] Max<bool0,bool1> -> bool0 | bool1 Min<bool0, bool1> -> a & b
2021-08-06 20:11 [Bug tree-optimization/101805] New: Max<bool0,bool1> -> bool0 | bool1 Min<bool0, bool1> -> a & b pinskia at gcc dot gnu.org
` (4 preceding siblings ...)
2023-05-15 21:51 ` pinskia at gcc dot gnu.org
@ 2023-05-16 1:38 ` pinskia at gcc dot gnu.org
2023-05-16 3:53 ` pinskia at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-05-16 1:38 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101805
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
URL| |https://gcc.gnu.org/piperma
| |il/gcc-patches/2023-May/618
| |645.html
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Updated patch:
https://gcc.gnu.org/pipermail/gcc-patches/2023-May/618645.html
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug tree-optimization/101805] Max<bool0,bool1> -> bool0 | bool1 Min<bool0, bool1> -> a & b
2021-08-06 20:11 [Bug tree-optimization/101805] New: Max<bool0,bool1> -> bool0 | bool1 Min<bool0, bool1> -> a & b pinskia at gcc dot gnu.org
` (5 preceding siblings ...)
2023-05-16 1:38 ` pinskia at gcc dot gnu.org
@ 2023-05-16 3:53 ` pinskia at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-05-16 3:53 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101805
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |14.0
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Fixed by r14-868-gb06cfb62229f17eca59fa4aabf853d7e17e2327b (I typed the wrong
bug # in the commit message).
^ permalink raw reply [flat|nested] 8+ messages in thread
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2021-08-06 20:11 [Bug tree-optimization/101805] New: Max<bool0,bool1> -> bool0 | bool1 Min<bool0, bool1> -> a & b pinskia at gcc dot gnu.org
2021-08-06 21:50 ` [Bug tree-optimization/101805] " pinskia at gcc dot gnu.org
2021-08-14 0:21 ` pinskia at gcc dot gnu.org
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