math/big: fix broken comment

R=iant, iant
CC=golang-dev
https://golang.org/cl/6485064

diff --git a/src/pkg/math/big/arith_amd64.s b/src/pkg/math/big/arith_amd64.s
index b1d4a862b259e49afc15a33a9415f98a1ff87f89..2d10793e63e4932879f23885557e83e43fab45fa 100644 (file)
--- a/src/pkg/math/big/arith_amd64.s
+++ b/src/pkg/math/big/arith_amd64.s
@@ -34,9 +34,7 @@ TEXT ·addVV(SB),7,$0
        MOVQ $0, CX             // c = 0
        MOVQ $0, SI             // i = 0
 
-       // uncomment the next line to disable the unrolled loop
-       // JMP V1
-       
+       // s/JL/JMP/ below to disable the unrolled loop
        SUBQ $4, DI             // n -= 4
        JL V1                   // if n < 0 goto V1
 
@@ -90,9 +88,7 @@ TEXT ·subVV(SB),7,$0
        MOVQ $0, CX             // c = 0
        MOVQ $0, SI             // i = 0
 
-       // uncomment the next line to disable the unrolled loop
-       // JMP V2
-       
+       // s/JL/JMP/ below to disable the unrolled loop
        SUBQ $4, DI             // n -= 4
        JL V2                   // if n < 0 goto V2
 
@@ -144,9 +140,7 @@ TEXT ·addVW(SB),7,$0
        
        MOVQ $0, SI             // i = 0
 
-       // uncomment the next line to disable the unrolled loop
-       // JMP V3
-       
+       // s/JL/JMP/ below to disable the unrolled loop
        SUBQ $4, DI             // n -= 4
        JL V3                   // if n < 4 goto V3
 
@@ -198,9 +192,7 @@ TEXT ·subVW(SB),7,$0
        
        MOVQ $0, SI             // i = 0
 
-       // uncomment the next line to disable the unrolled loop
-       // JMP V4
-       
+       // s/JL/JMP/ below to disable the unrolled loop
        SUBQ $4, DI             // n -= 4
        JL V4                   // if n < 4 goto V4
 
@@ -389,7 +381,7 @@ E7: SUBL $1, BX             // i--
 TEXT ·bitLen(SB),7,$0
        BSRQ x+0(FP), AX
        JZ Z1
-       INCL AX
+       ADDL $1, AX
        MOVL AX, n+8(FP)
        RET