3.18.37 PDP-11 Options
These options are defined for the PDP-11:
-mfpu
- Use hardware FPP floating point. This is the default. (FIS floating
point on the PDP-11/40 is not supported.) Implies -m45.
-msoft-float
- Do not use hardware floating point.
-mac0
- Return floating-point results in ac0 (fr0 in Unix assembler syntax).
-mno-ac0
- Return floating-point results in memory. This is the default.
-m40
- Generate code for a PDP-11/40. Implies -msoft-float -mno-split.
-m45
- Generate code for a PDP-11/45. This is the default.
-m10
- Generate code for a PDP-11/10. Implies -msoft-float -mno-split.
-mint16
-mno-int32
- Use 16-bit
int
. This is the default.
-mint32
-mno-int16
- Use 32-bit
int
.
-msplit
- Target has split instruction and data space. Implies -m45.
-munix-asm
- Use Unix assembler syntax.
-mdec-asm
- Use DEC assembler syntax.
-mgnu-asm
- Use GNU assembler syntax. This is the default.
-mlra
- Use the new LRA register allocator. By default, the old “reload”
allocator is used.