#define TARGET_STACK_PROBE (target_flags & MASK_STACK_PROBE)
#define TARGET_SWITCHES \
-{ { "80387", MASK_80387 }, \
- { "no-80387", -MASK_80387 }, \
- { "hard-float", MASK_80387 }, \
- { "soft-float", -MASK_80387 }, \
- { "no-soft-float", MASK_80387 }, \
- { "386", 0 }, \
- { "no-386", 0 }, \
- { "486", 0 }, \
- { "no-486", 0 }, \
- { "pentium", 0 }, \
- { "pentiumpro", 0 }, \
- { "rtd", MASK_RTD }, \
- { "no-rtd", -MASK_RTD }, \
- { "align-double", MASK_ALIGN_DOUBLE }, \
- { "no-align-double", -MASK_ALIGN_DOUBLE }, \
- { "svr3-shlib", MASK_SVR3_SHLIB }, \
- { "no-svr3-shlib", -MASK_SVR3_SHLIB }, \
- { "ieee-fp", MASK_IEEE_FP }, \
- { "no-ieee-fp", -MASK_IEEE_FP }, \
- { "fp-ret-in-387", MASK_FLOAT_RETURNS }, \
- { "no-fp-ret-in-387", -MASK_FLOAT_RETURNS }, \
- { "no-fancy-math-387", MASK_NO_FANCY_MATH_387 }, \
- { "fancy-math-387", -MASK_NO_FANCY_MATH_387 }, \
+{ { "80387", MASK_80387, "Use hardware fp" }, \
+ { "no-80387", -MASK_80387, "Do not use hardware fp" },\
+ { "hard-float", MASK_80387, "Use hardware fp" }, \
+ { "soft-float", -MASK_80387, "Do not use hardware fp" },\
+ { "no-soft-float", MASK_80387, "Use hardware fp" }, \
+ { "386", 0, "Optimize for i80386" }, \
+ { "no-386", 0, "" }, \
+ { "486", 0, "Optimize for i80486" }, \
+ { "no-486", 0, "" }, \
+ { "pentium", 0, "Optimize for Pentium" }, \
+ { "pentiumpro", 0, "Optimize for Pentium Pro, Pentium II" },\
+ { "rtd", MASK_RTD, "Alternate calling convention" },\
+ { "no-rtd", -MASK_RTD, "Use normal calling convention" },\
+ { "align-double", MASK_ALIGN_DOUBLE, "Align doubles on dword boundary" },\
+ { "no-align-double", -MASK_ALIGN_DOUBLE, "Align doubles on word boundary" }, \
+ { "svr3-shlib", MASK_SVR3_SHLIB, "Uninitialized locals in .bss" }, \
+ { "no-svr3-shlib", -MASK_SVR3_SHLIB, "Uninitialized locals in .data" }, \
+ { "ieee-fp", MASK_IEEE_FP, "Use IEEE math for fp comparisons" }, \
+ { "no-ieee-fp", -MASK_IEEE_FP, "Do not use IEEE math for fp comparisons" }, \
+ { "fp-ret-in-387", MASK_FLOAT_RETURNS, "Return values of functions in FPU registers" }, \
+ { "no-fp-ret-in-387", -MASK_FLOAT_RETURNS , "Do not return values of functions in FPU registers"}, \
+ { "no-fancy-math-387", MASK_NO_FANCY_MATH_387, "Do not generate sin, sos, sqrt for 387" }, \
+ { "fancy-math-387", -MASK_NO_FANCY_MATH_387, "Generate sin, cos, sqrt for FPU"}, \
{ "omit-leaf-frame-pointer", MASK_OMIT_LEAF_FRAME_POINTER }, \
{ "no-omit-leaf-frame-pointer",-MASK_OMIT_LEAF_FRAME_POINTER }, \
- { "no-wide-multiply", MASK_NO_WIDE_MULTIPLY }, \
- { "wide-multiply", -MASK_NO_WIDE_MULTIPLY }, \
+ { "no-wide-multiply", MASK_NO_WIDE_MULTIPLY, "multiplies of 32 bits constrained to 32 bits" }, \
+ { "wide-multiply", -MASK_NO_WIDE_MULTIPLY, "multiplies of 32 bits are 64 bits" }, \
{ "schedule-prologue", MASK_SCHEDULE_PROLOGUE }, \
{ "no-schedule-prologue", -MASK_SCHEDULE_PROLOGUE }, \
{ "debug-addr", MASK_DEBUG_ADDR }, \
option if the fixed part matches. The actual option name is made
by appending `-m' to the specified name. */
#define TARGET_OPTIONS \
-{ { "cpu=", &ix86_cpu_string}, \
- { "arch=", &ix86_arch_string}, \
- { "reg-alloc=", &i386_reg_alloc_order }, \
- { "regparm=", &i386_regparm_string }, \
- { "align-loops=", &i386_align_loops_string }, \
- { "align-jumps=", &i386_align_jumps_string }, \
- { "align-functions=", &i386_align_funcs_string }, \
+{ { "cpu=", &ix86_cpu_string, "Schedule code for given CPU"}, \
+ { "arch=", &ix86_arch_string, "Generate code for given CPU"}, \
+ { "reg-alloc=", &i386_reg_alloc_order, "Control allocation order of integer registers" }, \
+ { "regparm=", &i386_regparm_string, "Number of registers used to pass integer arguments" }, \
+ { "align-loops=", &i386_align_loops_string, "Loop code aligned to this power of 2" }, \
+ { "align-jumps=", &i386_align_jumps_string, "Jump targets are aligned to this power of 2" }, \
+ { "align-functions=", &i386_align_funcs_string, "Function starts are aligned to this power of 2" }, \
{ "branch-cost=", &i386_branch_cost_string }, \
SUBTARGET_OPTIONS \
}