Hi all,
In PR51505(https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51505), Paolo Bonzini
added the code to delete REG_EQUAL notes in df_remove_dead_eq_notes:
gcc/df-problems.c:
df_remove_dead_eq_notes (rtx_insn *insn, bitmap live)
{
...
case REG_EQUAL:
case REG_EQUIV:
{
Hi,
I have a maybe silly question about whether there is any *standard*
or *options* (like -ffast-math) for GCC that allow double to float
demotion optimization? For example,
1) from PR22326:
#include
float foo(float f, float x, float y) {
return (fabs(f)*x+y);
}
The fabs will return double
Thanks,
On 2020/12/10 17:12, Richard Biener wrote:
>> 2) From PR90070:
>>
>>double temp1 = (double)r->red;
>>double temp2 = (double)aggregate.red;
>>double temp3 = temp2 + (temp1 * 5.0);
> temp1 * 5 could be not representable in float but the
> result of the add could so the transform
+cc.
On 2020/12/11 14:25, Xionghu Luo via Gcc wrote:
Thanks,
On 2020/12/10 17:12, Richard Biener wrote:
2) From PR90070:
double temp1 = (double)r->red;
double temp2 = (double)aggregate.red;
double temp3 = temp2 + (temp1 * 5.0);
temp1 * 5 could be not representable in float
On 2020/12/11 15:47, Richard Biener wrote:
>> Note that the add/sub sequence is different for (3) and (4) since
>> -funsafe-math-optimizations is implicitly true. "fp-contract=fast" in
>> (1) and (2) could avoid Inf as fmads could handle float overflow (verified
>> it on Power, not sure other ta
On 2020/12/11 15:47, Richard Biener wrote:
>> Note that the add/sub sequence is different for (3) and (4) since
>> -funsafe-math-optimizations is implicitly true. "fp-contract=fast" in
>> (1) and (2) could avoid Inf as fmads could handle float overflow (verified
>> it on Power, not sure other t
Sorry, should be sent to this mail-list.
On 2021/6/10 11:31, Xionghu Luo via Gcc-patches wrote:
Hi,
I noticed that the "git gcc-commit-mklog" command doesn't extract PR
number from title to ChangeLog automatically, then the committed patch
doesn't update the related bugzi
On 2021/6/10 14:17, Martin Liška wrote:
> On 6/10/21 7:22 AM, Xionghu Luo wrote:
>> Sorry, should be sent to this mail-list.
>>
>>
>> On 2021/6/10 11:31, Xionghu Luo via Gcc-patches wrote:
>>> Hi,
>>> I noticed that the "git gcc-commit-mklog&qu
On 2022/7/27 04:12, Eugene Rozenfeld via Gcc wrote:
Hello GCC community.
I started this thread on the state of AutoFDO in GCC more than a year ago. Here
is the first message in the thread:
https://gcc.gnu.org/pipermail/gcc/2021-April/235860.html
Since then I committed a number of patches t
On 2022/7/27 09:31, Xionghu Luo wrote:
On 2022/7/27 04:12, Eugene Rozenfeld via Gcc wrote:
Hello GCC community.
I started this thread on the state of AutoFDO in GCC more than a year
ago. Here is the first message in the thread:
https://gcc.gnu.org/pipermail/gcc/2021-April/235860.html
S
10 matches
Mail list logo
