for Integersuite n = 512000000
pre-allocates a 512MB stack

for Floatingpointsuite n = 950000000
pre-allocates a 950MB stack

Turns on:

• -O3
• -Qprec-div-
• -QxP
• -Qipo

PASS1 = -Qprof_gen

PASS2 = -Qprof_use

The optimizations include:

• All optimizations done with -O2
• loop unrolling, including instruction scheduling
• code replication to eliminate branches
• padding the size of certain power-of-two arrays to allow more efficient cache use.
• When used with -Qax or -Qx, it causes the compiler to perform more aggressive data dependency analysis than for -O2.

Enables multi-file ip optimizations which allows inline function expansion for calls to functions defined in separate files. The compiler decides whether to create one or more object files based on an estimate of the size of the application. It generates one object file for small applications and two for large ones.

for Fortran

multi-file ip optimizations that includes:

• inline function expansion
• interprocedural constant propagation
• monitoring module-level static variables
• dead code elimination
• propagation of function characteristics
• passing arguments in registers
• loop-invariant code motion

• -Og
• -Oi-
• -Os
• -Oy
• -Ob1
• -Gs

This options defaults to ON.

This option also enables.

• inlining of intrinsics
• Intra-file interprocedural optimizations including:
• inlining
• constant propagation
• forward substitution
• routine attribute propagation
• variable address-taken analysis
• dead static function elimination
• removal of unreferenced variables.
• The following performance optimizations:
• copy propogation.
• dead-code elimination
• global register allocation
• global instruction scheduling and control speculation
• loop unrolliing
• optimized code selection
• partial redundancy elimination
• strength reduction/induction variable simplification
• variable renaming
• exception handling optimizations
• tail recursions
• peephole optimizations
• structure assignment lowering and optimization
• dead store elimination

Instruments the program for profiling: to get the execution count of each basic block.

for Fortran

Instruments the program for profiling: to get the execution count of each basic block.
Enables single-file interprocedural optimizations within a file.

for C and C++:

• Turns on -Qfnsplit.
• Forces function grouping.

Default enabled

Default enabled

Default enabled

n = 1
Enables inlining of functio's declared with the __inline keyword. Also enables inlining according to the C++ language

n = 2
Enables inlining of any function. However, the compiler decides which functions are inlined. This option enables interprocedural optimizations and has the same effect as specifying option Qip.

Default enabled with n = 2

Default enabled with n = 4096.

Default disabled

Overrides -Os

Default enabled

• K = Intel Pentium III and compatible Intel processors
• W = Intel Pentium 4 and compatible Intel processors
• N = Intel Pentium 4 and compatible Intel processors. These options also enable advanced data layout and code restructuring optimizations to improve memory accesses for Intel processors.
• P = Intel Pentium 4 processor with Streaming SIMD 3 (SSE3) support. These option also enable advanced data layout and code restructuring optimizations to improve memory accesses for Intel processors.

Qansi_alias directs the compiler to assume the following:
• Arrays are not accessed out of bounds.
• Pointers are not cast to non-pointer types, and vice-versa.
• References to objects of two different scalar types cannot alias. For example, an object of type int cannot alias with an object of type float, or an object of type float cannot alias with an object of type double.

If your program satisfies the above conditions, setting the -Qansi_alias flag will help the compiler better optimize the program. However, if your program does not satisfy one of the above conditions, the -Qansi_alias flag may lead the compiler to generate incorrect code.

for Fortran
Enables (default) or disables the compiler to assume that the program adheres to the ANSI Fortran type aliasablility rules. For example, an object of type real cannot be accessed as an integer. You should see the ANSI Standard for the complete set of rules.

Default enabled

Default: the compiler uses default heuristics when unrolling loops.

NOTE: If tool is incorrectly specified, the compiler gives an warning and the option is ignored. For example, if -Qoption,f,... is used with the Intel C++ compiler, the option is ignored with an warning.

-Qoption can be used with the -Qipo flag to refine IPO.
The valid options that can be used for this purpose are:

• -ip_args_in_regs = 0
  Disables the passing of arguments in registers.
• -ip_ninl_max_stats = n
  Sets the valid max number of intermediate language statements for a function that is expanded in line. The number n is a positive integer. The number of intermediate language statements usually exceeds the actual number of source language statements. The default value for n is 230. The compiler uses a larger limit for user inline functions
• -ip_ninl_min_stats = n
  Sets the valid min number of intermediate language statements for a function that is expanded in line. The number n is a positive integer. The default values for ip_ninl_min_stats are:
  IA-32 compiler: ip_ninl_min_stats = 7
• -ip_ninl_max_total_stats = n
  Sets the maximum increase in size of a function, measured in intermediate language statements, due to inlining. n is a positive integer whose default value is 2000.

Default is 16.

Problem: 16 is also pos'ible. How to write regexp?

Default enabled

CINT2006:

Necessary when linking with the Smartheap library since that causes multiple definitions or new and delete
471.omnetpp: linker error without whis option

Runrules: it must be used for all CPU2006 Integer Suite