GCCFSS -mcpu/-mtune and -xtarget/-xarch command line options
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GCCFSS -mcpu/-mtune and -xtarget/-xarch command line options

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GCC for SPARC® Systems - Handling -mcpu, -mtune, -xarch, and -xtarget options

Description
 -mcpu and -xtarget expand into -xarch, -xchip, and -xcache.  -mtune expands into -xchip.  The processing of -xarch, -xchip, and -xcache is to take the right-most version of those options.  The -m32 and -m64 options will have an effect upon the value of -xarch.
 The default value for -m32 and -m64 is -mcpu

v9.
 -mvis forces -xarch to be at least v8plusa for -m32 and v9a for -m64.  -mno-vis forces -xarch to be no more than v8plus for -m32 and v9 for -m64.  -xvis=yes is the same as -mvis and -xvis=no is the same as -mno-vis.
 -mv8plus forces -xarch to be at least v8plus for -m32 and has no effect for -m64. -mno-v8plus forces -xarch to be at most v8 for -m32 and has not effect for -m64.  -mv8plus and -mno-v8plus apply to the previous -mcpu/-xtarget/-xarch option and has no effect on subsequent -mcpu/-xtarget/-xarch options.
 Items in green in the following tables are extensions to exisiting GCC command line options.
 Table showing expansion of -mcpu and -xtarget command line options

flag
-xarch=
-xchip=
-xcache=
-m32/-m64
-mcpu=v7
 -mcpu=cypress		-m32: v7
 -m64: v9
 else: v7		genericgeneric

-mcpu=v8
 -mcpu=supersparc
 -mcpu=sparclite
 -mcpu=f930
 -mcpu=f934
 -mcpu=hypersparc
 -mcpu=sparclite86x
 -mcpu=sparclet
 -mcpu=tsc701
 -mv8
 -msupersparc
 -msparclite
 -mf930
 -mf934
-m32: v8
 -m64: v9
 else: v8
generic
generic

-mcpu=ultrasparc
 -xtarget=ultra
-m32: v8plusa
 -m64: v9a
   else: v8plusa
ultra
16/32/1:512/64/1

-mcpu=ultrasparc2
 -xtarget=ultra2
-m32: v8plusa
 -m64: v9a
   else: v8plusa		ultra2
16/32/1:512/64/1

-mcpu=ultrasparc2i
 -xtarget=ultra2i		-m32: v8plusa
 -m64: v9a
   else: v8plusa		ultra2i16/32/1:512/64/1
-mcpu=ultrasparc2e
 -xtarget=ultra2e		-m32: v8plusa
 -m64: v9a
   else: v8plusa		ultra2e16/32/1:256/64/4
-mcpu=gemini-m32: v8plusa
 -m64: v9a
   else: v8plusa		ultra216/32/1:512/64/4
-mcpu=ultrasparc3
 -xtarget=ultra3
-m32: v8plusb
 -m64: v9b
   else: v8plusb		ultra3 64/32/4:8192/512/2

-mcpu=ultrasparc3cu
 -xtarget=ultra3cu
-m32: v8plusb
 -m64: v9b
   else: v8plusb		ultra3cu
64/32/4:8192/512/2

-mcpu=ultrasparc3i
 -xtarget=ultra3i
-m32: v8plusb
 -m64: v9b
   else: v8plusb		ultra3i
64/32/4:1024/64/4

-mcpu=ultrasparc3iplus
 -xtarget=ultra3iplus
-m32: v8plusb
 -m64: v9b
   else: v8plusb		ultra3iplus
64/32/4:4096/64/4

-mcpu=ultrasparc4
 -xtarget=ultra4
-m32: v8plusb
 -m64: v8plusb
   else: v8plusb		ultra464/32/4:8192/128/2
-mcpu=ultrasparc4plus
 -xtarget=ultra4plus
-m32: v8plusb
 -m64: v8plusb
   else: v8plusb		ultra4plus64/32/4:2048/64/4:32768/64/4
-mcpu=niagara
-mcpu=ultraT1
 -xtarget=ultraT1		-m32: v8plus
 -m64: v9
   else: v8plus		ultraT18/16/4/4:3072/64/12/32
-mcpu=v9
-m32: v8plus
 -m64: v9
   else: v8plus
genericgeneric
-xtarget=generic
-m32: generic
 -m64: generic64
   else: generic
generic
generic
-m32: -m32
 -m64: -m64
   else: -m32
-xtarget=generic64
-m32: generic
 -m64: generic64
    else: generic64
ultra3
generic
-m32: -m32
 -m64: -m64
    else: -m64
 Table showing expansion of -mtune
-mtune=
-xchip=
m7
 cypress
 v8
 supersparc
 sparclite
 f930
 f934
 hypersparc
 sparclite86x
 sparclet
 tsc701
generic
ultrasparc
ultra
ultrasparc2
ultra2
ultrasparc2e
ultra2e
ultrasparc2i
ultra2i
ultrasparc3
ultra3
ultrasparc3i
ultra3i
ultrasparc3cu
ultra3cu
ultrasparc3iplus
ultra3iplus
ultrasparc4
ultra4
ultrasparc4plusultra4plus
niagara
 ultraT1		ultraT1
 Documents
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Created by admin on 2009/10/26 12:13
Last modified by admin on 2009/10/26 12:13
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