Using the GNU Compiler Collection (GCC)

Node: IA-64 Options, Next: D30V Options, Previous: MCore Options, Up: Submodel Options

IA-64 Options

These are the -m options defined for the Intel IA-64 architecture.

-mbig-endian: Generate code for a big endian target. This is the default for HP-UX.
-mlittle-endian: Generate code for a little endian target. This is the default for AIX5 and Linux.
-mgnu-as
-mno-gnu-as: Generate (or don't) code for the GNU assembler. This is the default.
-mgnu-ld
-mno-gnu-ld: Generate (or don't) code for the GNU linker. This is the default.
-mno-pic: Generate code that does not use a global pointer register. The result is not position independent code, and violates the IA-64 ABI.
-mvolatile-asm-stop
-mno-volatile-asm-stop: Generate (or don't) a stop bit immediately before and after volatile asm statements.
-mb-step: Generate code that works around Itanium B step errata.
-mregister-names
-mno-register-names: Generate (or don't) in, loc, and out register names for the stacked registers. This may make assembler output more readable.
-mno-sdata
-msdata: Disable (or enable) optimizations that use the small data section. This may be useful for working around optimizer bugs.
-mconstant-gp: Generate code that uses a single constant global pointer value. This is useful when compiling kernel code.
-mauto-pic: Generate code that is self-relocatable. This implies -mconstant-gp. This is useful when compiling firmware code.
-minline-float-divide-min-latency: Generate code for inline divides of floating point values using the minimum latency algorithm.
-minline-float-divide-max-throughput: Generate code for inline divides of floating point values using the maximum throughput algorithm.
-minline-int-divide-min-latency: Generate code for inline divides of integer values using the minimum latency algorithm.
-minline-int-divide-max-throughput: Generate code for inline divides of integer values using the maximum throughput algorithm.
-mno-dwarf2-asm
-mdwarf2-asm: Don't (or do) generate assembler code for the DWARF2 line number debugging info. This may be useful when not using the GNU assembler.
-mfixed-range=register-range: Generate code treating the given register range as fixed registers. A fixed register is one that the register allocator can not use. This is useful when compiling kernel code. A register range is specified as two registers separated by a dash. Multiple register ranges can be specified separated by a comma.