B.4 Oracle Solaris Studio 12.2 Fortran Release

intrinsics return a default integer, regardless of argument type. This introduces a minor incompatibility with previous releases.

■Object Oriented Fortran features related to polymorphism are now supported:

■Supported OOF features: type extension and polymorphic entities: CLASS statement, unlimited polymorphism, SELECT TYPE construct, ABSTRACT derived type, EXTENDS_TYPE_OF and SAME_TYPE_AS intrinsics, and sequence type assignments to unlimited pointers.

■Unsupported OOF features: typebound procedures: typebound PROCEDURE declaration,

GENERIC, DEFERRED, NON_OVERRIDABLE, PASS, NOPASS.

■Other new F2003/2008 features:

■Enhanced structure constructor: using component names to construct a structure constant.

■Enhanced PUBLIC/PRIVATE access control on module derived types and components.

■More Fortran 2008 math intrinsic function support. Most Fortran 2008 math intrinsic functions are now supported except for ERFC_SCALED, NORM2 and some REAL*16 variants on x86 platforms.

■Derived types with no components.

■The KIND argument was added to ICHAR, IACHAR, ACHAR, SHAPE, UBOUND, LBOUND, SIZE, MINLOC, MAXLOC, COUNT, LEN, LEN_TRIM, INDEX, SCAN and VERIFY intrinsics.

■The BACK argument was added to MINLOC and MAXLOC intrinsics.

■New intrinsics FINDLOC and STORAGE_SIZE were added.

■New keywords ERRMSG, SOURCE and MOLD were added to ALLOCATE statement, and ERRMSG was added to DEALLOCATE statement.

B.4 Oracle Solaris Studio 12.2 Fortran Release

The Oracle Solaris Studio Fortran 95 compiler version 8.5 is a component of the Oracle Solaris Studio 12.2 release.

■Support for the SPARC VIS3 version of the SPARC-V9 instruction set. Compiling with the -xarch=sparcvis3 option enables the compiler to use instructions from the SPARC-V9 instruction set, plus the UltraSPARC extensions, including the Visual Instruction Set (VIS) version 1.0, the UltraSPARC-III extensions, including the Visual Instruction Set (VIS) version 2.0 the fused multiply-add instructions, and the Visual Instruction Set (VIS) version 3.0.

■The default for the -xvector option has changed on x86-based systems to -xvector=simd. Streaming extensions are used on x86-based systems by default where beneficial

B.5 Sun Studio 12 Update 1 Fortran Release

at optimization level 3 and above. The sub-option no%simd can be used to disable it. On SPARC-based systems, the default is -xvector=%none. See “3.4.189 - xvector[=a]” on page 164

■Support for the AMD SSE4a instruction set is now available. Compile with the - xarch=amdsse4a option.

■The new -traceback option enables an executable to print a stack trace if a severe error occurs. This option causes the executable to trap a set of signals and print a stack trace and core dump before exiting. If multiple threads generate a signal, a stack trace will be produced only for the first one. To use traceback, add the -traceback option when linking

a program with f95, cc, or CC. For convenience, the option is also accepted at compile-time but is ignored. Using the -traceback option with the -G option to create a shared library is an error. See “3.4.97 –traceback[={%none|common|signals_list}]” on page 98

■The -mt option has been changed to -mt=yes or -mt=no. The -mt=yes option assures that libraries are linked in the appropriate order. See “3.4.64 -mt[={yes|no}]” on page 85

■The -xprofile=tcovoption has been enhanced to support an optional profile directory pathname, and possibly the ability to generate tcov-compatible feedback data. See “3.4.171

–xprofile=p” on page 151

■The new -xkeepframe[=[%all,%none] option prohibits stack related optimizations for the named functions. %all prohibits stack related optimizations for all the code. %none

allows stack related optimizations for all the code. The default is -xkeepframe=%none. See “3.4.142 –xkeepframe[=[%all,%none,name,no%name]]” on page 135

■Additional F2003 features have been implemented. See “4.6 Fortran 200x Features” on page 181

■The IVDEP directive tells the compiler to ignore some or all loop-carried dependences on array references that it finds in a loop for purposes of optimization. This enables the compiler to perform various loop optimizations that would not be otherwise possible. The -xivdep option can be used to disable the IVDEP directives, or to determine how the directives should be interpreted. See “2.3.3 IVDEP Directive” on page 37

B.5 Sun Studio 12 Update 1 Fortran Release

■Object files created by the compilers on the Oracle Solaris OS on x86 platforms or the Linux OS are incompatible with previous compiler versions if the application code contains functions with parameters or return values using _m128/_m64 data types. Users with .il inline function files, assembler code, or asm inline statements calling these functions also need to be aware of this incompatibility.

■New x86 —xtarget values woodcrest, penryn, nehalem.

■New SPARC —xtarget values ultraT2plus and sparc64vii.

220 Oracle Developer Studio 12.6: Fortran User's Guide • July 2017

B.6 Sun Studio 12 Fortran Release

■New x86 —xarch and —xchip values ssse3, sse4_1, sse4_2, core2, penryn, nehalem, barcelona.

■New SPARC —xarch and —xchip values sparcima, sparc64vii, and ultraT2plus.

■The -xprofile=collect and -xprofile=use options provide improved support for profiling multi-threaded, dynamically linked applications.

■On Oracle Solaris platforms, the -xpec[=yes|no] option generates a PEC binary that is recompilable for use with the Automatic Tuning System (ATS).

■The -xdepend option is now implicitly enabled for optimization levels -xO3 or higher, and is no longer included in the expansion of the -fast option.

■Support for OpenMP 3.0 tasking..

■-xannotate[=yes|no] (SPARC platforms only) instructs the compiler to create binaries that can be transformed later by binary modification tools like binopt(1).

■Quad precision (REAL*16) is implemented on x86 platforms. REAL*16 is 128-bit IEEE floating point.

■The compiler normally creates temporary files in the /tmp directory. You can specify another directory by setting the TMPDIR environment variable.

■The behavior of the cpu_time() Fortran intrinsic routine is different between Oracle Solaris and Linux platforms.

■The Fortran 2003 IMPORT statement is implemented.

B.6 Sun Studio 12 Fortran Release

■The Fortran compiler is now available on the following Linux (x86 and x64) distributions: SuSe Linux Enterprise Server 9 with Service Pack 3 (or later), Red Hat Enterprise Linux 4, and other Linux distributions based on the 2.6 kernel (although these are not officially supported).

■Use -m64 to create 64-bit executables and shared libraries.

■New flags for -xarch replace obsolete flags.

■New values for -xtarget and -xchip provide code generation for the UltraSPARC T2 and SPARC64vi processors.

■New flag -fma=fused to enable generation of fused multiply-add instructions on processors that support them.

■New flag -xhwcprof enables compiler support for dataspace profiling.

■New flag -xinstrument to enable performance analysis by the Thread Analyzer.

■-xregs=frameptr added to -fast on x86.

■Explicit prefetch directives accepted on x86 platforms as well as SPARC platforms. (— xprefetch=explicit)

B.7 Sun Studio 11 Fortran Release

■Default format for debugging information has changed from the "stabs" standard to the "dwarf" standard format. ( -xdebugformat=dwarf).

B.7 Sun Studio 11 Fortran Release

■New -xmodel option:The new -xmodel option lets you specify the kernel, small, or medium memory models on the 64-bit AMD architecture. If the size of your global and static variables exceeds two gigabytes, specify -xmodel=medium. Otherwise, use the default - xmodel=small setting. See “3.4.154 –xmodel=[small | kernel | medium]” on page 142.

■The -xvector option extended for x86 SSE2 platforms:The -xvector option enables automatic generation of calls to the vector library functions and/or the generation of the SIMD (Single Instruction Multiple Data) instructions. This option now offers the expanded syntax on x86 SSE2 platforms.

■STACKSIZE environment variable enhanced:The syntax of the STACKSIZE environment variable has been enhanced to include a units keyword.

■-xpagesize options available on x86 platforms:Options -xpagesize, -xpagesize_heap, and -xpagesize_stack are now enabled on x86 platforms as well as SPARC. See “3.4.161

–xpagesize=size” on page 145.

■New UltraSPARC T1 and UltraSPARC IV+ targets enabled:Values for -xarch, - xchip, -xcache, and -xtarget support new UltraSPARC processors. See “3.4.182 – xtarget=t” on page 159.

222 Oracle Developer Studio 12.6: Fortran User's Guide • July 2017