* config/rs6000/rs6000.opt (mmulhw): New option.

[pf3gnuchains/gcc-fork.git] / gcc / doc / invoke.texi

diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 1f430bb..c8a72c4 100644 (file)
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -659,6 +659,7 @@ See RS/6000 and PowerPC Options.
 -mspe -mno-spe @gol
 -mspe=yes  -mspe=no @gol
 -mvrsave -mno-vrsave @gol
+-mmulhw -mno-mulhw @gol
 -mfloat-gprs=yes  -mfloat-gprs=no -mfloat-gprs=single -mfloat-gprs=double @gol
 -mprototype  -mno-prototype @gol
 -msim  -mmvme  -mads  -myellowknife  -memb  -msdata @gol
@@ -10974,7 +10975,8 @@ 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
+@option{-mpowerpc-gfxopt}, @option{-mstring}, @option{-mmulhw}.
+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
@@ -11236,6 +11238,15 @@ Generate code that uses (does not use) the floating point multiply and
 accumulate instructions.  These instructions are generated by default if
 hardware floating is used.
 
+@item -mmulhw
+@itemx -mno-mulhw
+@opindex mmulhw
+@opindex mno-mulhw
+Generate code that uses (does not use) the half-word multiply and
+multiply-accumulate instructions on the IBM 405 and 440 processors.
+These instructions are generated by default when targetting those
+processors.
+
 @item -mno-bit-align
 @itemx -mbit-align
 @opindex mno-bit-align