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(as.info)SH64 Options

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Options
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`-isa=shmedia | -isa=shcompact'
     Specify the default instruction set.  `SHmedia' specifies the
     32-bit opcodes, and `SHcompact' specifies the 16-bit opcodes
     compatible with previous SH families.  The default depends on the
     ABI selected; the default for the 64-bit ABI is SHmedia, and the
     default for the 32-bit ABI is SHcompact.  If neither the ABI nor
     the ISA is specified, the default is 32-bit SHcompact.

     Note that the `.mode' pseudo-op is not permitted if the ISA is not
     specified on the command line.

`-abi=32 | -abi=64'
     Specify the default ABI.  If the ISA is specified and the ABI is
     not, the default ABI depends on the ISA, with SHmedia defaulting
     to 64-bit and SHcompact defaulting to 32-bit.

     Note that the `.abi' pseudo-op is not permitted if the ABI is not
     specified on the command line.  When the ABI is specified on the
     command line, any `.abi' pseudo-ops in the source must match it.

`-shcompact-const-crange'
     Emit code-range descriptors for constants in SHcompact code
     sections.

`-no-mix'
     Disallow SHmedia code in the same section as constants and
     SHcompact code.

`-no-expand'
     Do not expand MOVI, PT, PTA or PTB instructions.

`-expand-pt32'
     With -abi=64, expand PT, PTA and PTB instructions to 32 bits only.