Comparison QB64 compiled with gcc optimizations and without

[Coolman]

i have redone the tests with qb64 3.0.0 to check that this version is stable and compatible with the old one. the result is globally positive. this version is faster during the compilations and the programs generated with O3 optimization are efficient. note that the binaries created by this version are always seen as shared libraries under linux with the dolphin file browser. i think it's a forgotten option in the command line of the compilation. i've looked at the modifications a bit. the work done is remarkable.

simple code using pset
2.3x seconds : program compiled with qb64 v0.5.0 -O3
2.1x seconds : program compiled with qb64 v3.0.0 -O3
3.5x seconds : program compiled with qb64 v0.5.0 original

Fractal Tree : I got this code from the site rosettacode.
2.9x seconds : program compiled with qb64 v0.5.0 -O3
3.0x seconds : program compiled with qb64 v3.0.0 -O3
6.1x seconds : program compiled with qb64 v0.5.0 original

Bucketsort : I got this code from the site rosettacode.
1.1x seconds : program compiled with qb64 v0.5.0 -O3
1.0x seconds : program compiled with qb64 v3.0.0 -O3
3.4x seconds : program compiled with qb64 v0.5.0 original

sorting algorithm QuickSort.
3.0x seconds : program compiled with qb64 v0.5.0 -O3
3.0x seconds : program compiled with qb64 v3.0.0 -O3
4.6x seconds : program compiled with qb64 v0.5.0 original

Alien Trees Reflection - Plasma Mod.
5.3x seconds : program compiled with qb64 v0.5.0 -O3
5.4x seconds : program compiled with qb64 v3.0.0 -O3
9.2x seconds : program compiled with qb64 v0.5.0 original

Nbody
16.9x seconds : program compiled with qb64 v0.5.0 -O3
16.5x seconds : program compiled with qb64 v3.0.0 -O3
68.0x seconds : program compiled with qb64 v0.5.0 original

Picture unroller
1.3x seconds : program compiled with qb64 v0.5.0 -O3
1.1x seconds : program compiled with qb64 v3.0.0 -O3
2.5x seconds : program compiled with qb64 v0.5.0 original

New screen - How ?. Found in the old forum.
1.4x seconds : program compiled with qb64 v0.5.0 -O3
1.1x seconds : program compiled with qb64 v3.0.0 -O3
2.3x seconds : program compiled with qb64 v0.5.0 original

opens a text file of about 4 mo to read it line by line three times in a row with the use of Left$ InStr
6.5x seconds : program compiled with qb64 v0.5.0 -O3
6.3x seconds : program compiled with qb64 v3.0.0 -O3
7.2x seconds : program compiled with qb64 v0.5.0 original

a very simple code that opens a text file of about 4 mo to read it line by line and copy it to a new file.
3.0x seconds : program compiled with qb64 v0.5.0 -O3
2.7x seconds : program compiled with qb64 v3.0.0 -O3
3.0x seconds : program compiled with qb64 v0.5.0 original

here is another very simple code that copies a test file of about 4 mo to an array and copies the data randomly to another array.

program compiled with qb64 v0.5.0 -O3
4.4x seconds : Read file and copy to table
7.1x seconds : Copy data randomly into another table.

program compiled with qb64 v3.0.0 -O3
4.6x seconds : Read file and copy to table
8.3x seconds : Copy data randomly into another table.

program compiled with qb64 v0.5.0 original
5.9x seconds : Read file and copy to table
27.4x seconds : Copy data randomly into another table.

found a code in the old forum
13.2x seconds : program compiled with qb64 v0.5.0 -O3
10.88 seconds : program compiled with qb64 v3.0.0 -O3
26.2x seconds : program compiled with qb64 v0.5.0 original

CRC-32 : I got this code from the site rosettacode.
6.7x seconds : program compiled with qb64 v0.5.0 -O3
6.9x seconds : program compiled with qb64 v3.0.0 -O3
17.6x seconds : program compiled with qb64 v0.5.0 original

_Deflate (compression) and _Inflate (decompression) functions.

program compiled with qb64 v0.5.0 -O3 :
Function _Deflate : 10.1x seconds
Function _Inflate : 1.2x seconds

program compiled with qb64 v3.0.0 -O3 :
Function _Deflate : 9.5x
Function _Inflate : 1.2x

program compiled with qb64 v0.5.0 original :
Function _Deflate : 10.1x seconds
Function _Inflate : 1.2x seconds