mbig-endian
Target Report RejectNegative Mask(BIG_ENDIAN)
Generate big endian code

mlittle-endian
Target Report RejectNegative InverseMask(BIG_ENDIAN)
Generate little endian code

mgnu-as
Target Report Mask(GNU_AS)
Generate code for GNU as

mgnu-ld
Target Report Mask(GNU_LD)
Generate code for GNU ld

mvolatile-asm-stop
Target Report Mask(VOL_ASM_STOP)
Emit stop bits before and after volatile extended asms

mregister-names
Target Mask(REG_NAMES)
Use in/loc/out register names

mno-sdata
Target Report RejectNegative Mask(NO_SDATA)

msdata
Target Report RejectNegative InverseMask(NO_SDATA)
Enable use of sdata/scommon/sbss

mno-pic
Target Report RejectNegative Mask(NO_PIC)
Generate code without GP reg

mconstant-gp
Target Report RejectNegative Mask(CONST_GP)
gp is constant (but save/restore gp on indirect calls)

mauto-pic
Target Report RejectNegative Mask(AUTO_PIC)
Generate self-relocatable code

minline-float-divide-min-latency
Target Report RejectNegative Var(TARGET_INLINE_FLOAT_DIV, 1)
Generate inline floating point division, optimize for latency

minline-float-divide-max-throughput
Target Report RejectNegative Var(TARGET_INLINE_FLOAT_DIV, 2) Init(2)
Generate inline floating point division, optimize for throughput

mno-inline-float-divide
Target Report RejectNegative Var(TARGET_INLINE_FLOAT_DIV, 0)

minline-int-divide-min-latency
Target Report RejectNegative Var(TARGET_INLINE_INT_DIV, 1)
Generate inline integer division, optimize for latency

minline-int-divide-max-throughput
Target Report RejectNegative Var(TARGET_INLINE_INT_DIV, 2)
Generate inline integer division, optimize for throughput

mno-inline-int-divide
Target Report RejectNegative Var(TARGET_INLINE_INT_DIV, 0)
Do not inline integer division

minline-sqrt-min-latency
Target Report RejectNegative Var(TARGET_INLINE_SQRT, 1)
Generate inline square root, optimize for latency

minline-sqrt-max-throughput
Target Report RejectNegative Var(TARGET_INLINE_SQRT, 2)
Generate inline square root, optimize for throughput

mno-inline-sqrt
Target Report RejectNegative Var(TARGET_INLINE_SQRT, 0)
Do not inline square root

mdwarf2-asm
Target Report Mask(DWARF2_ASM)
Enable Dwarf 2 line debug info via GNU as

mearly-stop-bits
Target Report Mask(EARLY_STOP_BITS)
Enable earlier placing stop bits for better scheduling

mfixed-range=
Target RejectNegative Joined
Specify range of registers to make fixed

mtls-size=
Target RejectNegative Joined UInteger Var(ia64_tls_size) Init(22)
Specify bit size of immediate TLS offsets

mtune=
Target RejectNegative Joined
Schedule code for given CPU

msched-br-data-spec
Target Report Var(mflag_sched_br_data_spec) Init(0)
Use data speculation before reload

msched-ar-data-spec
Target Report Var(mflag_sched_ar_data_spec) Init(1)
Use data speculation after reload

msched-control-spec
Target Report Var(mflag_sched_control_spec) Init(2)
Use control speculation

msched-br-in-data-spec
Target Report Var(mflag_sched_br_in_data_spec) Init(1)
Use in block data speculation before reload

msched-ar-in-data-spec
Target Report Var(mflag_sched_ar_in_data_spec) Init(1)
Use in block data speculation after reload

msched-in-control-spec
Target Report Var(mflag_sched_in_control_spec) Init(1)
Use in block control speculation

msched-spec-ldc
Target Report Var(mflag_sched_spec_ldc) Init(1)
Use simple data speculation check

msched-spec-control-ldc
Target Report Var(mflag_sched_spec_control_ldc) Init(0)
Use simple data speculation check for control speculation

msched-prefer-non-data-spec-insns
Target Report Var(mflag_sched_prefer_non_data_spec_insns) Init(0)
If set, data speculative instructions will be chosen for schedule only if there are no other choices at the moment 

msched-prefer-non-control-spec-insns
Target Report Var(mflag_sched_prefer_non_control_spec_insns) Init(0)
If set, control speculative instructions will be chosen for schedule only if there are no other choices at the moment 

msched-count-spec-in-critical-path
Target Report Var(mflag_sched_count_spec_in_critical_path) Init(0)
Count speculative dependencies while calculating priority of instructions

msched-stop-bits-after-every-cycle
Target Report Var(mflag_sched_stop_bits_after_every_cycle) Init(1)
Place a stop bit after every cycle when scheduling

msched-fp-mem-deps-zero-cost
Target Report Var(mflag_sched_fp_mem_deps_zero_cost) Init(0)
Assume that floating-point stores and loads are not likely to cause conflict when placed into one instruction group

msched-max-memory-insns=
Target RejectNegative Joined UInteger Var(ia64_max_memory_insns) Init(1)
Soft limit on number of memory insns per instruction group, giving lower priority to subsequent memory insns attempting to schedule in the same insn group. Frequently useful to prevent cache bank conflicts.  Default value is 1

msched-max-memory-insns-hard-limit
Target Report Var(mflag_sched_mem_insns_hard_limit) Init(0)
Disallow more than `msched-max-memory-insns' in instruction group. Otherwise, limit is `soft' (prefer non-memory operations when limit is reached)

msel-sched-dont-check-control-spec
Target Report Var(mflag_sel_sched_dont_check_control_spec) Init(0)
Don't generate checks for control speculation in selective scheduling

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