powerpc: POWER7 optimizationsibm/2.8/master

    Add optimizations for classification functions (32-bit and 64-bit) and
    string functions (32-bit and 64-bit).

    powerpc: Re-work the Implies structure

    This patch tries to organize the implies files for ppc, since there are
    a number of processors and most of them are compatible with each other
    (backwards compatible).

    Having in mind that we start the search for processor-specific files in
    the sysdeps/unix/sysv/linux tree
    (sysdeps/unix/sysv/linux/powerpc/powerpc[32|64]/[processor]/fpu to be
    exact), we would like to grab any linux-specific code from that tree
    prior to going through the other tree (sysdeps/powerpc/...).

    For that, i removed the Implies files that were originally inside the
    fpu directories and placed then in the non-fpu directories (still inside
    the unix/sysv/linux tree). If no processor-specific/linux-specific files
    could be found, we "imply" the other tree's (sysdeps/powerpc/...) fpu
    directory for that specific processor AND also the non-fpu directory for
    that same tree.

    If, again, no processor-specific code is found, we read another Implies
    file that will point to the most compatible processor that we should
    grab code from, and so on, until we reach the power4 processor.

    So, in summary, the Implies files will live inside these directories
    now:

    * sysdeps/unix/sysv/linux/powerpc/powerpc[32|64]/[processor]
    * sysdeps/powerpc/powerpc[32|64]/[processor]

    Practical example of the order we will use to pick power6-specific code
    with the new structure.

    sysdeps/unix/sysv/linux/powerpc/powerpc[32|64]/power6/fpu ->
    sysdeps/unix/sysv/linux/powerpc/powerpc[32|64]/power6 ->
    sysdeps/powerpc/powerpc[32|64]/power6/fpu ->
    sysdeps/powerpc/powerpc[32|64]/power6 ->
    sysdeps/powerpc/powerpc[32|64]/power5+/fpu ->
    sysdeps/powerpc/powerpc[32|64]/power5+ ->
    sysdeps/powerpc/powerpc[32|64]/power5/fpu ->
    sysdeps/powerpc/powerpc[32|64]/power5 ->
    sysdeps/powerpc/powerpc[32|64]/power4/fpu ->
    sysdeps/powerpc/powerpc[32|64]/power4 (from here, it'll go to the
    generic path as usual)

29 files changed, 31 insertions, 37 deletions

diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/970/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/970/Implies
new file mode 100644
index 0000000000..0c018834af
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/970/Implies
@@ -0,0 +1,2 @@
+powerpc/powerpc32/970/fpu
+powerpc/powerpc32/970
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/970/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/970/fpu/Implies
deleted file mode 100644
index 52993ae71b..0000000000
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/970/fpu/Implies
+++ /dev/null
@@ -1,3 +0,0 @@
-# Make sure this comes before the powerpc/powerpc32/fpu that's
-# listed in unix/sysv/linux/powerpc/powerpc32/fpu/Implies.
-powerpc/powerpc32/970/fpu
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/cell/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/cell/Implies
new file mode 100644
index 0000000000..29c49a4c24
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/cell/Implies
@@ -0,0 +1,2 @@
+powerpc/powerpc32/cell/fpu
+powerpc/powerpc32/cell
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power4/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power4/Implies
new file mode 100644
index 0000000000..17139bf21c
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power4/Implies
@@ -0,0 +1,2 @@
+powerpc/powerpc32/power4/fpu
+powerpc/powerpc32/power4
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power4/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power4/fpu/Implies
deleted file mode 100644
index 3c0690e2fe..0000000000
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power4/fpu/Implies
+++ /dev/null
@@ -1,3 +0,0 @@
-# Make sure this comes before the powerpc/powerpc32/fpu that's
-# listed in unix/sysv/linux/powerpc/powerpc32/fpu/Implies.
-powerpc/powerpc32/power4/fpu
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power5+/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power5+/Implies
new file mode 100644
index 0000000000..8e5b58a57a
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power5+/Implies
@@ -0,0 +1,2 @@
+powerpc/powerpc32/power5+/fpu
+powerpc/powerpc32/power5+
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power5+/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power5+/fpu/Implies
deleted file mode 100644
index 37d43bb6fc..0000000000
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power5+/fpu/Implies
+++ /dev/null
@@ -1,3 +0,0 @@
-# Make sure this comes before the powerpc/powerpc32/fpu that's
-# listed in unix/sysv/linux/powerpc/powerpc32/fpu/Implies.
-powerpc/powerpc32/power5+/fpu
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power5/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power5/Implies
new file mode 100644
index 0000000000..a51d2fdf95
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power5/Implies
@@ -0,0 +1,2 @@
+powerpc/powerpc32/power5/fpu
+powerpc/powerpc32/power5
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power5/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power5/fpu/Implies
deleted file mode 100644
index d379a2dd12..0000000000
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power5/fpu/Implies
+++ /dev/null
@@ -1,3 +0,0 @@
-# Make sure this comes before the powerpc/powerpc32/fpu that's
-# listed in unix/sysv/linux/powerpc/powerpc32/fpu/Implies.
-powerpc/powerpc32/power5/fpu
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power6/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power6/Implies
new file mode 100644
index 0000000000..c0e1bea435
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power6/Implies
@@ -0,0 +1,2 @@
+powerpc/powerpc32/power6/fpu
+powerpc/powerpc32/power6
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power6/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power6/fpu/Implies
deleted file mode 100644
index 9fb457db93..0000000000
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power6/fpu/Implies
+++ /dev/null
@@ -1,3 +0,0 @@
-# Make sure this comes before the powerpc/powerpc32/fpu that's
-# listed in unix/sysv/linux/powerpc/powerpc32/fpu/Implies.
-powerpc/powerpc32/power6/fpu
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power6x/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power6x/Implies
new file mode 100644
index 0000000000..bc9e74fcff
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power6x/Implies
@@ -0,0 +1,2 @@
+powerpc/powerpc32/power6x/fpu
+powerpc/powerpc32/power6x
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power6x/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power6x/fpu/Implies
deleted file mode 100644
index ffca13c0ef..0000000000
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power6x/fpu/Implies
+++ /dev/null
@@ -1,4 +0,0 @@
-# Make sure this comes before the powerpc/powerpc32/fpu that's
-# listed in unix/sysv/linux/powerpc/powerpc32/fpu/Implies.
-powerpc/powerpc32/power6x/fpu
-powerpc/powerpc32/power6/fpu
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power7/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power7/Implies
new file mode 100644
index 0000000000..083f3e950a
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power7/Implies
@@ -0,0 +1,2 @@
+powerpc/powerpc32/power7/fpu
+powerpc/powerpc32/power7
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power7/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power7/fpu/Implies
deleted file mode 100644
index d379a2dd12..0000000000
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power7/fpu/Implies
+++ /dev/null
@@ -1,3 +0,0 @@
-# Make sure this comes before the powerpc/powerpc32/fpu that's
-# listed in unix/sysv/linux/powerpc/powerpc32/fpu/Implies.
-powerpc/powerpc32/power5/fpu
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/970/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/970/Implies
new file mode 100644
index 0000000000..76a32ce7b5
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/970/Implies
@@ -0,0 +1,2 @@
+powerpc/powerpc64/970/fpu
+powerpc/powerpc64/970
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/cell/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/cell/Implies
new file mode 100644
index 0000000000..583d4084a4
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/cell/Implies
@@ -0,0 +1,2 @@
+powerpc/powerpc64/cell/fpu
+powerpc/powerpc64/cell
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/970/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power4/Implies
index 558a5fb174..bedb20b65c 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/970/fpu/Implies
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power4/Implies
@@ -1 +1,2 @@
 powerpc/powerpc64/power4/fpu
+powerpc/powerpc64/power4
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power4/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power4/fpu/Implies
deleted file mode 100644
index 558a5fb174..0000000000
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power4/fpu/Implies
+++ /dev/null
@@ -1 +0,0 @@
-powerpc/powerpc64/power4/fpu
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power5+/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power5+/Implies
new file mode 100644
index 0000000000..4c782d4122
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power5+/Implies
@@ -0,0 +1,2 @@
+powerpc/powerpc64/power5+/fpu
+powerpc/powerpc64/power5+
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power5+/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power5+/fpu/Implies
deleted file mode 100644
index cf5913dec3..0000000000
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power5+/fpu/Implies
+++ /dev/null
@@ -1,3 +0,0 @@
-# Make sure this comes before the powerpc/powerpc64/fpu that's
-# listed in unix/sysv/linux/powerpc/powerpc64/fpu/Implies.
-powerpc/powerpc64/power5+/fpu
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power5/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power5/Implies
new file mode 100644
index 0000000000..a01a13ab12
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power5/Implies
@@ -0,0 +1,2 @@
+powerpc/powerpc64/power5/fpu
+powerpc/powerpc64/power5
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power5/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power5/fpu/Implies
deleted file mode 100644
index 558a5fb174..0000000000
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power5/fpu/Implies
+++ /dev/null
@@ -1 +0,0 @@
-powerpc/powerpc64/power4/fpu
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power6/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power6/Implies
new file mode 100644
index 0000000000..9d68f39d22
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power6/Implies
@@ -0,0 +1,2 @@
+powerpc/powerpc64/power6/fpu
+powerpc/powerpc64/power6
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power6/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power6/fpu/Implies
deleted file mode 100644
index 9451147267..0000000000
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power6/fpu/Implies
+++ /dev/null
@@ -1,3 +0,0 @@
-# Make sure this comes before the powerpc/powerpc64/fpu that's
-# listed in unix/sysv/linux/powerpc/powerpc64/fpu/Implies.
-powerpc/powerpc64/power6/fpu
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power6x/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power6x/Implies
new file mode 100644
index 0000000000..9019778254
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power6x/Implies
@@ -0,0 +1,2 @@
+powerpc/powerpc64/power6x/fpu
+powerpc/powerpc64/power6x
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power6x/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power6x/fpu/Implies
deleted file mode 100644
index fd74b8341c..0000000000
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power6x/fpu/Implies
+++ /dev/null
@@ -1,4 +0,0 @@
-# Make sure this comes before the powerpc/powerpc64/fpu that's
-# listed in unix/sysv/linux/powerpc/powerpc64/fpu/Implies.
-powerpc/powerpc64/power6x/fpu
-powerpc/powerpc64/power6/fpu
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power7/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power7/Implies
new file mode 100644
index 0000000000..9a5e3c7277
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power7/Implies
@@ -0,0 +1,2 @@
+powerpc/powerpc64/power7/fpu
+powerpc/powerpc64/power7
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power7/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power7/fpu/Implies
deleted file mode 100644
index c46b3d42af..0000000000
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power7/fpu/Implies
+++ /dev/null
@@ -1,3 +0,0 @@
-# Make sure this comes before the powerpc/powerpc64/fpu that's
-# listed in unix/sysv/linux/powerpc/powerpc64/fpu/Implies.
-powerpc/powerpc64/power5/fpu