On Wednesday, 6 January 2021 at 02:30:30 UTC, Walter Bright wrote:
On 1/5/2021 2:42 AM, 9il wrote:
On Tuesday, 5 January 2021 at 09:47:41 UTC, Walter Bright
wrote:
On 1/4/2021 11:22 PM, 9il wrote:
I can't reproduce the same DMD output as you.
I did it on Windows 32 bit. I tried it on Linux 32, which
does indeed show the behavior you mentioned. At the moment I
don't know why the different behaviors.
https://issues.dlang.org/show_bug.cgi?id=21526
It just uses SSE, which I think a good way to go, haha.
As I mentioned upthread, it will use SSE when SSE is baseline
on the CPU target, and it will always round to precision.
Does this mean that DMD Linux 32-bit executables should
compile with SSE codes?
The baseline Linux target does not have SSE.
I ask because DMD compiles Linux 32-bit executables with x87
codes when -O is passed and with SSE if no -O is passed. That
is very weird.
Example, please?
DMD with flag -m32 generates
https://cpp.godbolt.org/z/GMGMra
assume CS:.text._D7example1fFffZf
push EBP
mov EBP,ESP
sub ESP,018h
movss XMM0,0Ch[EBP]
movss XMM1,8[EBP]
addss XMM0,XMM1
movss -8[EBP],XMM0
subss XMM0,XMM1
movss -4[EBP],XMM0
movss -018h[EBP],XMM0
fld float ptr -018h[EBP]
leave
ret 8
add [EAX],AL
It has been provided in the thread
https://forum.dlang.org/post/gqzdiicrvtlicurxy...@forum.dlang.org
