ppccpuid.pl: branch hints in OPENSSL_cleanse impact small block performance

of digest algorithms, mosty SHA, on Power7. Mystery of century, why SHA,
why slower algorithm are affected more...
PR: 2794
Submitted by: Ashley Lai

diff --git a/crypto/ppccpuid.pl b/crypto/ppccpuid.pl
index 3bdfff39d8b9b92bbc2710a36b2f185f0352deeb..9f2d96c7093a592cc759e9309ad380fc30896e42 100755 (executable)
--- a/crypto/ppccpuid.pl
+++ b/crypto/ppccpuid.pl
@@ -105,7 +105,7 @@ Ladd:       lwarx   r5,0,r3
 Little:        mtctr   r4
        stb     r0,0(r3)
        addi    r3,r3,1
 Little:        mtctr   r4
        stb     r0,0(r3)
        addi    r3,r3,1

-       bdnz-   \$-8
+       bdnz    \$-8

        blr
 Lot:   andi.   r5,r3,3
        beq     Laligned
        blr
 Lot:   andi.   r5,r3,3
        beq     Laligned


@@ -118,7 +118,7 @@ Laligned:
        mtctr   r5
        stw     r0,0(r3)
        addi    r3,r3,4
        mtctr   r5
        stw     r0,0(r3)
        addi    r3,r3,4

-       bdnz-   \$-8
+       bdnz    \$-8

        andi.   r4,r4,3
        bne     Little
        blr
        andi.   r4,r4,3
        bne     Little
        blr