1 files changed, 46 insertions, 6 deletions
diff --git a/gcc-4.8/gcc/doc/md.texi b/gcc-4.8/gcc/doc/md.texi
index 63ec92f6b..dacb83a70 100644
--- a/gcc-4.8/gcc/doc/md.texi
+++ b/gcc-4.8/gcc/doc/md.texi
@@ -2055,7 +2055,7 @@ Any constant whose absolute value is no greater than 4-bits.
 
 @end table
 
-@item PowerPC and IBM RS6000---@file{config/rs6000/rs6000.h}
+@item PowerPC and IBM RS6000---@file{config/rs6000/constraints.md}
 @table @code
 @item b
 Address base register
@@ -2069,17 +2069,57 @@ Floating point register (containing 32-bit value)
 @item v
 Altivec vector register
 
+@item wa
+Any VSX register if the -mvsx option was used or NO_REGS.
+
 @item wd
-VSX vector register to hold vector double data
+VSX vector register to hold vector double data or NO_REGS.
 
 @item wf
-VSX vector register to hold vector float data
+VSX vector register to hold vector float data or NO_REGS.
+
+@item wg
+If @option{-mmfpgpr} was used, a floating point register or NO_REGS.
+
+@item wl
+Floating point register if the LFIWAX instruction is enabled or NO_REGS.
+
+@item wm
+VSX register if direct move instructions are enabled, or NO_REGS.
+
+@item wn
+No register (NO_REGS).
+
+@item wr
+General purpose register if 64-bit instructions are enabled or NO_REGS.
 
 @item ws
-VSX vector register to hold scalar float data
+VSX vector register to hold scalar double values or NO_REGS.
 
-@item wa
-Any VSX register
+@item wt
+VSX vector register to hold 128 bit integer or NO_REGS.
+
+@item wu
+Altivec register to use for float/32-bit int loads/stores  or NO_REGS.
+
+@item wv
+Altivec register to use for double loads/stores  or NO_REGS.
+
+@item ww
+FP or VSX register to perform float operations under @option{-mvsx} or NO_REGS.
+
+@item wx
+Floating point register if the STFIWX instruction is enabled or NO_REGS.
+
+@item wy
+VSX vector register to hold scalar float values or NO_REGS.
+
+@item wz
+Floating point register if the LFIWZX instruction is enabled or NO_REGS.
+
+@item wQ
+A memory address that will work with the @code{lq} and @code{stq}
+instructions.
 
 @item h
 @samp{MQ}, @samp{CTR}, or @samp{LINK} register