Base Compiler Invocation
C benchmarks
-
- gcc
![[user]](http://www.spec.org/auto/omp2012/flags/user.png)
- CC, LD
-
Invoke the GNU C compiler
C++ benchmarks
-
- g++
- CXX, LD
-
Invoke the GNU C++ compiler
Fortran benchmarks
-
- gfortran
- FC, LD
-
Invoke the GNU Fortran compiler
Invoke the GNU C compiler
Invoke the GNU C++ compiler
Invoke the GNU Fortran compiler
Specify the layout used by the source file is free form.
Disable range checking on results of simplification of constant expressions during compilation. For example, GNU Fortran will give an error at compile time when simplifying "a = 1. / 0". With this option, no error will be given and "a" will be assigned the value "+Infinity". If an expression evaluates to a value outside of the relevant range of ["-HUGE()":"HUGE()"], then the expression will be replaced by "-Inf" or "+Inf" as appropriate. Similarly, "DATA i/Z'FFFFFFFF'/" will result in an integer overflow on most systems, but with -fno-range-check the value will "wrap around" and "i" will be initialized to -1 instead.
-mcmodel=
enable language support for
Optimize yet more.
Allow aggressive, lossy floating-point optimizations. This option is not turned on by any -O option besides -Ofast since it can result in incorrect output for programs that depend on an exact implementation of IEEE or ISO rules/specifications for math functions. It may, however, yield faster code for programs that do not require the guarantees of these specifications.
-mcpu=native causes the compiler to auto-detect the CPU of the build computer. At present, this feature is only supported on GNU/Linux, and not all architectures are recognized. If the auto-detect is unsuccessful the option has no effect.
Enable handling of OpenMP directives "#pragma omp" in C/C++ and
"!$omp" in Fortran. When -fopenmp is specified, the compiler
generates parallel code according to the OpenMP Application
Program Interface v4.0
Specifies signed char characters. The compiler treats "plain" char declarations as signed char.
Optimize yet more.
Allow aggressive, lossy floating-point optimizations. This option is not turned on by any -O option besides -Ofast since it can result in incorrect output for programs that depend on an exact implementation of IEEE or ISO rules/specifications for math functions. It may, however, yield faster code for programs that do not require the guarantees of these specifications.
-mcpu=native causes the compiler to auto-detect the CPU of the build computer. At present, this feature is only supported on GNU/Linux, and not all architectures are recognized. If the auto-detect is unsuccessful the option has no effect.
Enable handling of OpenMP directives "#pragma omp" in C/C++ and
"!$omp" in Fortran. When -fopenmp is specified, the compiler
generates parallel code according to the OpenMP Application
Program Interface v4.0
Optimize yet more.
Allow aggressive, lossy floating-point optimizations. This option is not turned on by any -O option besides -Ofast since it can result in incorrect output for programs that depend on an exact implementation of IEEE or ISO rules/specifications for math functions. It may, however, yield faster code for programs that do not require the guarantees of these specifications.
-mcpu=native causes the compiler to auto-detect the CPU of the build computer. At present, this feature is only supported on GNU/Linux, and not all architectures are recognized. If the auto-detect is unsuccessful the option has no effect.
Enable handling of OpenMP directives "#pragma omp" in C/C++ and
"!$omp" in Fortran. When -fopenmp is specified, the compiler
generates parallel code according to the OpenMP Application
Program Interface v4.0
Flag description origin markings:
|
Indicates that the flag description came from the user flags file. |
![[suite]](http://www.spec.org/auto/omp2012/flags/suite.png) |
Indicates that the flag description came from the suite-wide flags file. |
![[benchmark]](http://www.spec.org/auto/omp2012/flags/benchmark.png) |
Indicates that the flag description came from a per-benchmark flags file. |
For questions about the meanings of these flags, please contact the tester.
For other inquiries, please contact webmaster@spec.org
Copyright 2012-2019 Standard Performance Evaluation Corporation
Tested with SPEC OMP2012 v1.1.
Report generated on Wed Sep 4 19:07:02 2019 by SPEC OMP2012 flags formatter v538.