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From: "jwzeng at nuaa dot edu.cn" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/110410] [14 Regression] Different results between -O0 and -O2
Date: Mon, 26 Jun 2023 12:32:50 +0000 [thread overview]
Message-ID: <bug-110410-4-UbGSKKbroK@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-110410-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110410
--- Comment #3 from Jw Zeng <jwzeng at nuaa dot edu.cn> ---
(In reply to Richard Biener from comment #2)
> phi-opt again?
Link to the Compiler Explorer:https://godbolt.org/z/EeEqMGnWo
I reduced the code again, I hope it helps. The reduced code is as follows:
#include <stdio.h>
int var_1 = 1;
int var_2 = 0;
unsigned short var_3 = 7472;
int var_4 = 518868156U;
unsigned var_5;
#define min(a, b) ((a) < (b) ? (a) : (b))
int main() {
var_5 = min(var_1 ? var_3 >> (var_4 - 518868145U) : var_2, 1);
printf("%d\n", var_5);
return 0;
}
next prev parent reply other threads:[~2023-06-26 12:32 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-26 9:38 [Bug tree-optimization/110410] New: " jwzeng at nuaa dot edu.cn
2023-06-26 10:11 ` [Bug tree-optimization/110410] " jwzeng at nuaa dot edu.cn
2023-06-26 11:37 ` rguenth at gcc dot gnu.org
2023-06-26 12:32 ` jwzeng at nuaa dot edu.cn [this message]
2023-06-26 15:58 ` pinskia at gcc dot gnu.org
2023-06-26 16:07 ` pinskia at gcc dot gnu.org
2023-06-26 21:32 ` pinskia at gcc dot gnu.org
2023-07-19 16:19 ` pinskia at gcc dot gnu.org
2023-07-19 16:36 ` [Bug tree-optimization/110410] Missed optimization in DOM with a single value range pinskia at gcc dot gnu.org
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