diff options
Diffstat (limited to 'patches/glibc/ports-2.10.1/540-alpha-fix-memchr.patch')
| -rw-r--r-- | patches/glibc/ports-2.10.1/540-alpha-fix-memchr.patch | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/patches/glibc/ports-2.10.1/540-alpha-fix-memchr.patch b/patches/glibc/ports-2.10.1/540-alpha-fix-memchr.patch new file mode 100644 index 0000000..84999d6 --- /dev/null +++ b/patches/glibc/ports-2.10.1/540-alpha-fix-memchr.patch @@ -0,0 +1,121 @@ +2009-07-27 Aurelien Jarno <aurelien@aurel32.net> + + * sysdeps/alpha/memchr.S: Use prefetch load. + * sysdeps/alpha/alphaev6/memchr.S: Likewise. + +diff -durN glibc-2.10.1.orig/glibc-ports-2.10.1/sysdeps/alpha/alphaev6/memchr.S glibc-2.10.1/glibc-ports-2.10.1/sysdeps/alpha/alphaev6/memchr.S +--- glibc-2.10.1.orig/glibc-ports-2.10.1/sysdeps/alpha/alphaev6/memchr.S 2009-05-16 10:36:20.000000000 +0200 ++++ glibc-2.10.1/glibc-ports-2.10.1/sysdeps/alpha/alphaev6/memchr.S 2009-11-13 00:51:15.000000000 +0100 +@@ -127,7 +127,7 @@ + cmpbge $31, $1, $2 # E : + bne $2, $found_it # U : + # At least one byte left to process. +- ldq $1, 8($0) # L : ++ ldq $31, 8($0) # L : + subq $5, 1, $18 # E : U L U L + + addq $0, 8, $0 # E : +@@ -143,38 +143,38 @@ + and $4, 8, $4 # E : odd number of quads? + bne $4, $odd_quad_count # U : + # At least three quads remain to be accessed +- mov $1, $4 # E : L U L U : move prefetched value to correct reg ++ nop # E : L U L U : move prefetched value to correct reg + + .align 4 + $unrolled_loop: +- ldq $1, 8($0) # L : prefetch $1 +- xor $17, $4, $2 # E : +- cmpbge $31, $2, $2 # E : +- bne $2, $found_it # U : U L U L ++ ldq $1, 0($0) # L : load quad ++ xor $17, $1, $2 # E : ++ ldq $31, 8($0) # L : prefetch next quad ++ cmpbge $31, $2, $2 # E : U L U L + ++ bne $2, $found_it # U : + addq $0, 8, $0 # E : + nop # E : + nop # E : +- nop # E : + + $odd_quad_count: ++ ldq $1, 0($0) # L : load quad + xor $17, $1, $2 # E : +- ldq $4, 8($0) # L : prefetch $4 ++ ldq $31, 8($0) # L : prefetch $4 + cmpbge $31, $2, $2 # E : +- addq $0, 8, $6 # E : + ++ addq $0, 8, $6 # E : + bne $2, $found_it # U : + cmpult $6, $18, $6 # E : + addq $0, 8, $0 # E : +- nop # E : + + bne $6, $unrolled_loop # U : +- mov $4, $1 # E : move prefetched value into $1 + nop # E : + nop # E : +- +-$final: subq $5, $0, $18 # E : $18 <- number of bytes left to do + nop # E : ++ ++$final: ldq $1, 0($0) # L : load last quad ++ subq $5, $0, $18 # E : $18 <- number of bytes left to do + nop # E : + bne $18, $last_quad # U : + +diff -durN glibc-2.10.1.orig/glibc-ports-2.10.1/sysdeps/alpha/memchr.S glibc-2.10.1/glibc-ports-2.10.1/sysdeps/alpha/memchr.S +--- glibc-2.10.1.orig/glibc-ports-2.10.1/sysdeps/alpha/memchr.S 2009-05-16 10:36:20.000000000 +0200 ++++ glibc-2.10.1/glibc-ports-2.10.1/sysdeps/alpha/memchr.S 2009-11-13 00:51:15.000000000 +0100 +@@ -119,7 +119,7 @@ + + # At least one byte left to process. + +- ldq t0, 8(v0) # e0 : ++ ldq zero, 8(v0) # e0 : prefetch next quad + subq t4, 1, a2 # .. e1 : + addq v0, 8, v0 #-e0 : + +@@ -138,19 +138,19 @@ + + # At least three quads remain to be accessed + +- mov t0, t3 # e0 : move prefetched value to correct reg +- + .align 4 + $unrolled_loop: +- ldq t0, 8(v0) #-e0 : prefetch t0 +- xor a1, t3, t1 # .. e1 : +- cmpbge zero, t1, t1 # e0 : +- bne t1, $found_it # .. e1 : ++ ldq t0, 0(v0) # e0 : load quad ++ xor a1, t0, t1 # .. e1 : ++ ldq zero, 8(v0) # e0 : prefetch next quad ++ cmpbge zero, t1, t1 # .. e1: ++ bne t1, $found_it # e0 : + +- addq v0, 8, v0 #-e0 : ++ addq v0, 8, v0 # e1 : + $odd_quad_count: ++ ldq t0, 0(v0) # e0 : load quad + xor a1, t0, t1 # .. e1 : +- ldq t3, 8(v0) # e0 : prefetch t3 ++ ldq zero, 8(v0) # e0 : prefetch next quad + cmpbge zero, t1, t1 # .. e1 : + addq v0, 8, t5 #-e0 : + bne t1, $found_it # .. e1 : +@@ -159,8 +159,8 @@ + addq v0, 8, v0 # .. e1 : + bne t5, $unrolled_loop #-e1 : + +- mov t3, t0 # e0 : move prefetched value into t0 +-$final: subq t4, v0, a2 # .. e1 : a2 <- number of bytes left to do ++$final: ldq t0, 0(v0) # e0 : load last quad ++ subq t4, v0, a2 # .. e1 : a2 <- number of bytes left to do + bne a2, $last_quad # e1 : + + $not_found: +diff -durN glibc-2.10.1.orig/ports/sysdeps/alpha/alphaev6/memchr.S glibc-2.10.1/ports/sysdeps/alpha/alphaev6/memchr.S +diff -durN glibc-2.10.1.orig/ports/sysdeps/alpha/memchr.S glibc-2.10.1/ports/sysdeps/alpha/memchr.S |