Option
Description
Default
-ax{i|M|K|W}
IA-32 only
Generates, on a single binary, code specialized
to the extensions specified by the codes:
i Intel® Pentium® Pro, Pentium
II processors
M Intel
Pentium with MMX(TM) technology processor
K Intel
Pentium III processor
W Intel
Pentium 4, Intel®
Xeon(TM), and Intel®
Pentium®
M processors
In addition, -ax generates IA-32 generic code.
The generic code is usually slower.
Note:
-axi is not a vectorizer option.
OFF
-x{i|M|K|W}
IA-32 only
Generate specialized code to run exclusively on the processors supporting
the extensions indicated by the codes:
i Intel
Pentium Pro, Pentium II processors
M Intel
Pentium with MMX technology processor
K Intel
Pentium III processor
W Intel
Pentium 4, Intel Xeon, and Intel Pentium
M processors
Note:
-xi is not a vectorizer option.
OFF
-vec_report
{0|1|2|3|4|5}
IA-32 only
Controls the diagnostic messages from the vectorizer as follows:
n = 0: no information
n = 1: indicates vectorized /non-vectorizerd loops
n = 2: indicates vectorized /non-vectorized loops
n = 3: indicates vectorized /non-vectorized loops and prohibit data
dependence information
n = 4: indicates non-vectorized loops
n = 5: indicates non-vectorized loops and the reason why they were
not vectorized
-vec
_report1