3.4.179 –xtarget=t

Specify the target platform for the instruction set and optimization.

t must be one of: native, native64, generic, generic64, platform–name.

The -xtarget option permits a quick and easy specification of the -xarch, -xchip, and -xcache combinations that occur on real platforms. The only meaning of -xtarget is in its expansion.

The performance of some programs may benefit by providing the compiler with an accurate description of the target computer hardware. When program performance is critical, the proper specification of the target hardware could be very important. This is especially true when running on the newer SPARC processors. However, for most programs and older SPARC processors, the performance gain is negligible and a generic specification is sufficient.

The actual expansion of -xtarget values can change from release to release. You can always determine the expansion that the compiler will use with the -dryrun flag:

demo% f95 -dryrun -xtarget=ultra4plus
###     command line files and options (expanded):
### -dryrun -xarch=sparcvis 
    -xcache=64/32/4/1:2048/64/4/2:32768/64/4/2 -xchip=ultra4plus

Note that the —xtarget expansion for a particular named platform might not be the same as —xtarget=native on that same platform.

3.4.179.1 Generic and Native Platforms

native

Optimize performance for the host platform (32–bits).

Expands to —m32 —xarch=native —xchip=native —xcache=native

native64

Obsolete. Use —xtarget=native —m64 instead.

generic

Get the best performance for most 32–bit platforms.

This is the default and expands to: -m32 -xarch=generic -xchip=generic -xcache=generic

generic64

Obsolete. Use -xtarget=generic -m64 instead.

platform–name

Get the best performance for the specified platform listed below.

3.4.179.2 SPARC Platforms

The following table gives a list of the commonly used system platform names accepted by the compiler.

Table 3-21  Expansions of Commonly Used -xtarget System Platforms

-xtarget= platform-name -xarch -xchip -xcache sparc64vi sparcfmaf sparc64vi 128/64/2:5120/64/10 sparc64vii sparcima sparc64vii 64/64/2:5120/256/10 sparc64viiplus sparcima sparc64viiplus 64/64/2:11264/256/11 sparc64x sparcace sparc64x 64/128/4/2:24576/128/24/32 sparc64xplus sparcaceplus sparc64xplus 64/128/4/2:24576/128/24/32 ultra sparcvis ultra 16/32/1:512/64/1 ultra1/140 sparcvis ultra 16/32/1:512/64/1 ultra1/170 sparcvis ultra 16/32/1:512/64/1 ultra1/200 sparcvis ultra 16/32/1:512/64/1 ultra2 sparcvis ultra2 16/32/1:512/64/1 ultra2/1170 sparcvis ultra 16/32/1:512/64/1 ultra2/1200 sparcvis ultra 16/32/1:1024/64/1 ultra2/1300 sparcvis ultra2 16/32/1:2048/64/1 ultra2/2170 sparcvis ultra 16/32/1:512/64/1 ultra2/2200 sparcvis ultra 16/32/1:1024/64/1 ultra2/2300 sparcvis ultra2 16/32/1:2048/64/1 ultra2e sparcvis ultra2e 16/32/1:256/64/4 ultra2i sparcvis ultra2i 16/32/1:512/64/1 ultra3 sparcvis2 ultra3 64/32/4:8192/512/1 ultra3cu sparcvis2 ultra3cu 64/32/4:8192/512/2 ultra3i sparcvis2 ultra3i 64/32/4:1024/64/4 ultra4 sparcvis2 ultra4 64/32/4:8192/128/2 ultra4plus sparcvis2 ultra4plus 64/32/4/1:2048/64/4/2:32768/64/4/2 ultraT1 sparc ultraT1 8/16/4/4:3072/64/12/32 ultraT2 sparcvis2 ultraT2 8/16/4:4096/64/16 ultraT2plus sparcvis2 ultraT2plus 8/16/4:4096/64/16 ultraT3 sparcvis3 ultraT3 8/16/4:6144/64/24 T3 sparcvis3 T3 8/16/4:6144/64/24 T4 sparc4 T4 16/32/4:128/32/8:4096/64/16 T5 sparc4 T5 16/32/4/8:128/32/8/8:8192/64/16/128 T7 sparc5 T7 16/32/4/8:256/64/8/16:8192/64/8/32 M5 sparc4 M5 16/32/4/8:128/32/8/8:49152/64/12/48 M6 sparc4 M6 16/32/4/8:128/32/8/8:49152/64/12/96 M7 sparc5 M7 16/32/4/8:256/64/8/16:8192/64/8/32

Compiling for a 64-bit Solaris OS on 64–bit enabled platforms is indicated by the -m64 flag. If -xtarget is specified, -m64 must appear after the -xtarget flag, as in:

-xtarget=ultra2   ...   -m64

otherwise the default 32–bit memory model will be used.

3.4.179.3 x86 Platforms

The valid -xtarget platform names for x86 systems and their expansions are shown in the following table.

Table 3-22  -xtarget Values on x86 Platforms

-xtarget= -xarch -xchip -xcache pentium 386 pentium generic pentium_pro pentium_pro pentium_pro generic pentium3 sse pentium3 16/32/4:256/32/4 pentium4 sse2 pentium4 8/64/4:256/128/8 opteron sse2a opteron 64/64/2:1024/64/16 woodcrest ssse3 core2 32/64/8:4096/64/16 barcelona amdsse4a amdfam10 64/64/2:512/64/16 penryn sse4_1 penryn 2/64/8:6144/64/24 nehalem sse4_2 nehalem 32/64/8:256/64/8:8192/64/16 westmere aes westmere 32/64/8:256/64/8:30720/64/24 sandybridge avx sandybridge 32/64/8/2:256/64/8/2:20480/64/20/16 ivybridge avx_i ivybridge 32/64/8/2:256/64/8/2:20480/64/20/16 haswell avx2 haswell 32/64/8/2:256/64/8/2:20480/64/20/16

Compiling for 64-bit Solaris OS on 64-bit enabled x86 platform is indicated by the -m64 flag. For example, compiling with -xtarget=opteron is not necessary or sufficient. If -xtarget is specified, the -m64 option must appear after the -xtarget flag, as in:

-xtarget=opteron -m64

otherwise the compilation will be 32-bit x86.