diff options
Diffstat (limited to 'gcc/doc/invoke.texi')
| -rw-r--r-- | gcc/doc/invoke.texi | 57 |
1 files changed, 42 insertions, 15 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 4e87c7e6c56..2b71c96432c 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -636,6 +636,7 @@ See RS/6000 and PowerPC Options. -maltivec -mno-altivec @gol -mpowerpc-gpopt -mno-powerpc-gpopt @gol -mpowerpc-gfxopt -mno-powerpc-gfxopt @gol +-mmfcrf -mno-mfcrf -mpopcntb -mno-popcntb -mfprnd -mno-fprnd @gol -mnew-mnemonics -mold-mnemonics @gol -mfull-toc -mminimal-toc -mno-fp-in-toc -mno-sum-in-toc @gol -m64 -m32 -mxl-compat -mno-xl-compat -mpe @gol @@ -10830,6 +10831,12 @@ These @samp{-m} options are defined for the IBM RS/6000 and PowerPC: @itemx -mno-powerpc-gfxopt @itemx -mpowerpc64 @itemx -mno-powerpc64 +@itemx -mmfcrf +@itemx -mno-mfcrf +@itemx -mpopcntb +@itemx -mno-popcntb +@itemx -mfprnd +@itemx -mno-fprnd @opindex mpower @opindex mno-power @opindex mpower2 @@ -10842,12 +10849,18 @@ These @samp{-m} options are defined for the IBM RS/6000 and PowerPC: @opindex mno-powerpc-gfxopt @opindex mpowerpc64 @opindex mno-powerpc64 +@opindex mmfcrf +@opindex mno-mfcrf +@opindex mpopcntb +@opindex mno-popcntb +@opindex mfprnd +@opindex mno-fprnd GCC supports two related instruction set architectures for the RS/6000 and PowerPC@. The @dfn{POWER} instruction set are those instructions supported by the @samp{rios} chip set used in the original RS/6000 systems and the @dfn{PowerPC} instruction set is the -architecture of the Motorola MPC5xx, MPC6xx, MPC8xx microprocessors, and -the IBM 4xx microprocessors. +architecture of the Freescale MPC5xx, MPC6xx, MPC8xx microprocessors, and +the IBM 4xx, 6xx, and follow-on microprocessors. Neither architecture is a subset of the other. However there is a large common subset of instructions supported by both. An MQ @@ -10875,6 +10888,18 @@ General Purpose group, including floating-point square root. Specifying use the optional PowerPC architecture instructions in the Graphics group, including floating-point select. +The @option{-mmfcrf} option allows GCC to generate the move from +condition register field instruction implemented on the POWER4 +processor and other processors that support the PowerPC V2.01 +architecture. +The @option{-mpopcntb} option allows GCC to generate the popcount and +double precision FP reciprocal estimate instruction implemented on the +POWER5 processor and other processors that support the PowerPC V2.02 +architecture. +The @option{-mfprnd} option allows GCC to generate the FP round to +integer instructions implemented on the POWER5+ processor and other +processors that support the PowerPC V2.03 architecture. + The @option{-mpowerpc64} option allows GCC to generate the additional 64-bit instructions that are found in the full PowerPC64 architecture and to treat GPRs as 64-bit, doubleword quantities. GCC defaults to @@ -10913,9 +10938,10 @@ Supported values for @var{cpu_type} are @samp{401}, @samp{403}, @samp{601}, @samp{602}, @samp{603}, @samp{603e}, @samp{604}, @samp{604e}, @samp{620}, @samp{630}, @samp{740}, @samp{7400}, @samp{7450}, @samp{750}, @samp{801}, @samp{821}, @samp{823}, -@samp{860}, @samp{970}, @samp{8540}, @samp{common}, @samp{ec603e}, @samp{G3}, +@samp{860}, @samp{970}, @samp{8540}, @samp{ec603e}, @samp{G3}, @samp{G4}, @samp{G5}, @samp{power}, @samp{power2}, @samp{power3}, -@samp{power4}, @samp{power5}, @samp{powerpc}, @samp{powerpc64}, +@samp{power4}, @samp{power5}, @samp{power5+}, +@samp{common}, @samp{powerpc}, @samp{powerpc64}, @samp{rios}, @samp{rios1}, @samp{rios2}, @samp{rsc}, and @samp{rs64}. @option{-mcpu=common} selects a completely generic processor. Code @@ -10935,19 +10961,20 @@ those options will run best on that processor, and may not run at all on others. The @option{-mcpu} options automatically enable or disable the -following options: @option{-maltivec}, @option{-mhard-float}, -@option{-mmfcrf}, @option{-mmultiple}, @option{-mnew-mnemonics}, -@option{-mpower}, @option{-mpower2}, @option{-mpowerpc64}, -@option{-mpowerpc-gpopt}, @option{-mpowerpc-gfxopt}, -@option{-mstring}. The particular options set for any particular CPU -will vary between compiler versions, depending on what setting seems -to produce optimal code for that CPU; it doesn't necessarily reflect -the actual hardware's capabilities. If you wish to set an individual -option to a particular value, you may specify it after the -@option{-mcpu} option, like @samp{-mcpu=970 -mno-altivec}. +following options: @option{-maltivec}, @option{-mfprnd}, +@option{-mhard-float}, @option{-mmfcrf}, @option{-mmultiple}, +@option{-mnew-mnemonics}, @option{-mpopcntb}, @option{-mpower}, +@option{-mpower2}, @option{-mpowerpc64}, @option{-mpowerpc-gpopt}, +@option{-mpowerpc-gfxopt}, @option{-mstring}. The particular options +set for any particular CPU will vary between compiler versions, +depending on what setting seems to produce optimal code for that CPU; +it doesn't necessarily reflect the actual hardware's capabilities. If +you wish to set an individual option to a particular value, you may +specify it after the @option{-mcpu} option, like @samp{-mcpu=970 +-mno-altivec}. On AIX, the @option{-maltivec} and @option{-mpowerpc64} options are -not enabled or disabled by the @option{-mcpu} option at present, since +not enabled or disabled by the @option{-mcpu} option at present because AIX does not have full support for these options. You may still enable or disable them individually if you're sure it'll work in your environment. |