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Reorder some operands to increase frequency of multiply early termination on TDMI targets, reorder some operations to try to reduce stalls.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21834 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Andrew Mahone 2009-07-13 04:50:02 +00:00
parent 15dc0750be
commit f35db90efa
1 changed files with 55 additions and 55 deletions
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110
apps/codecs/lib/mdct_arm.S
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@ -80,9 +80,9 @@ mdct_butterfly_16:
rsb r3, r2, r3, asl #1 @ (x1 - x9) - (x0 - x8)
ldr r12, =cPI2_8
smull r8, r5, r2, r12
smull r8, r5, r12, r2
smull r8, r6, r12, r3
mov r5, r5, asl #1
smull r8, r6, r3, r12
mov r6, r6, asl #1
stmia r0!, {r5, r6, r10, r11}
@ -103,9 +103,9 @@ mdct_butterfly_16:
sub r2, r2, r3 @ (x12 - x4) - (x13 - x5)
add r3, r2, r3, asl #1 @ (x12 - x4) + (x13 - x5)
smull r8, r5, r2, r12
smull r8, r5, r12, r2
smull r8, r6, r12, r3
mov r5, r5, asl #1
smull r8, r6, r3, r12
mov r6, r6, asl #1
@ no stmia here, r5, r6, r10, r11 are passed to mdct_butterfly_8
@ -138,11 +138,11 @@ mdct_butterfly_32:
ldr r12, =cPI1_8
ldr lr, =cPI3_8
smull r10, r6, r2, r12
smlal r10, r6, r3, lr
smull r10, r6, r12, r2
rsb r2, r2, #0
smull r10, r7, r3, r12
smlal r10, r7, r2, lr
smlal r10, r6, lr, r3
smull r10, r7, r12, r3
smlal r10, r7, lr, r2
mov r6, r6, asl #1
mov r7, r7, asl #1
@ -151,8 +151,8 @@ mdct_butterfly_32:
ldr r11, =cPI2_8
smull r10, r8, r4, r11
mov r8, r8, asl #1
smull r10, r9, r5, r11
mov r8, r8, asl #1
mov r9, r9, asl #1
stmia r0!, {r6, r7, r8, r9}
@ -170,11 +170,11 @@ mdct_butterfly_32:
stmia r1!, {r6, r7, r8, r9}
smull r10, r6, r2, lr
smlal r10, r6, r3, r12
smull r10, r6, lr, r2
rsb r2, r2, #0
smull r10, r7, r3, lr
smlal r10, r7, r2, r12
smlal r10, r6, r12, r3
smull r10, r7, lr, r3
smlal r10, r7, r12, r2
mov r6, r6, asl #1
mov r7, r7, asl #1
@ -195,11 +195,11 @@ mdct_butterfly_32:
stmia r1!, {r6, r7, r8, r9}
smull r10, r7, r2, r12
smlal r10, r7, r3, lr
smull r10, r7, lr, r3
rsb r3, r3, #0
smull r10, r6, r3, r12
smlal r10, r6, r2, lr
smlal r10, r7, r12, r2
smull r10, r6, r12, r3
smlal r10, r6, lr, r2
mov r6, r6, asl #1
mov r7, r7, asl #1
@ -207,9 +207,9 @@ mdct_butterfly_32:
add r5, r4, r5, asl #1 @ (x26 - x10) + (x27 - x11)
ldr r11, =cPI2_8
smull r10, r8, r4, r11
smull r10, r8, r11, r4
smull r10, r9, r11, r5
mov r8, r8, asl #1
smull r10, r9, r5, r11
mov r9, r9, asl #1
stmia r0!, {r6, r7, r8, r9}
@ -227,11 +227,11 @@ mdct_butterfly_32:
stmia r1, {r6, r7, r8, r9}
smull r10, r7, r2, lr
smlal r10, r7, r3, r12
smull r10, r7, r12, r3
rsb r3, r3, #0
smull r10, r6, r3, lr
smlal r10, r6, r2, r12
smlal r10, r7, lr, r2
smull r10, r6, lr, r3
smlal r10, r6, r12, r2
mov r6, r6, asl #1
mov r7, r7, asl #1
@ -270,11 +270,11 @@ mdct_butterfly_generic_loop:
stmdb r0!, {r6, r7, r8, r9}
ldmia r2, {r6, r7}
smull r5, r8, r14, r6
smlal r5, r8, r12, r7
smull r5, r8, r6, r14
rsb r14, r14, #0
smull r5, r9, r12, r6
smlal r5, r9, r14, r7
smlal r5, r8, r7, r12
smull r5, r9, r6, r12
smlal r5, r9, r7, r14
mov r8, r8, asl #1
mov r9, r9, asl #1
@ -282,11 +282,11 @@ mdct_butterfly_generic_loop:
add r2, r2, r3, asl #2
ldmia r2, {r6, r7}
smull r5, r8, r11, r6
smlal r5, r8, r10, r7
smull r5, r8, r6, r11
rsb r11, r11, #0
smull r5, r9, r10, r6
smlal r5, r9, r11, r7
smlal r5, r8, r7, r10
smull r5, r9, r6, r10
smlal r5, r9, r7, r11
mov r8, r8, asl #1
mov r9, r9, asl #1
@ -313,11 +313,11 @@ mdct_butterfly_generic_loop:
stmdb r0!, {r6, r7, r8, r9}
ldmia r2, {r6, r7}
smull r5, r9, r14, r6
smlal r5, r9, r12, r7
smull r5, r9, r6, r14
rsb r14, r14, #0
smull r5, r8, r12, r6
smlal r5, r8, r14, r7
smlal r5, r9, r7, r12
smull r5, r8, r6, r12
smlal r5, r8, r7, r14
mov r8, r8, asl #1
mov r9, r9, asl #1
@ -325,11 +325,11 @@ mdct_butterfly_generic_loop:
sub r2, r2, r3, asl #2
ldmia r2, {r6, r7}
smull r5, r9, r11, r6
smlal r5, r9, r10, r7
smull r5, r9, r6, r11
rsb r11, r11, #0
smull r5, r8, r10, r6
smlal r5, r8, r11, r7
smlal r5, r9, r7, r10
smull r5, r8, r6, r10
smlal r5, r8, r7, r11
mov r8, r8, asl #1
mov r9, r9, asl #1
@ -356,11 +356,11 @@ mdct_butterfly_generic_loop:
stmdb r0!, {r6, r7, r8, r9}
ldmia r2, {r6, r7}
smull r5, r8, r12, r6
smlal r5, r8, r14, r7
smull r5, r8, r6, r12
rsb r12, r12, #0
smull r5, r9, r14, r6
smlal r5, r9, r12, r7
smlal r5, r8, r7, r14
smull r5, r9, r6, r14
smlal r5, r9, r7, r12
mov r8, r8, asl #1
mov r9, r9, asl #1
@ -368,11 +368,11 @@ mdct_butterfly_generic_loop:
add r2, r2, r3, asl #2
ldmia r2, {r6, r7}
smull r5, r8, r10, r6
smlal r5, r8, r11, r7
smull r5, r8, r6, r10
rsb r10, r10, #0
smull r5, r9, r11, r6
smlal r5, r9, r10, r7
smlal r5, r8, r7, r11
smull r5, r9, r6, r11
smlal r5, r9, r7, r10
mov r8, r8, asl #1
mov r9, r9, asl #1
@ -399,11 +399,11 @@ mdct_butterfly_generic_loop:
stmdb r0!, {r6, r7, r8, r9}
ldmia r2, {r6, r7}
smull r5, r9, r12, r6
smlal r5, r9, r14, r7
smull r5, r9, r6, r12
smlal r5, r9, r7, r14
rsb r12, r12, #0
smull r5, r8, r14, r6
smlal r5, r8, r12, r7
smull r5, r8, r6, r14
smlal r5, r8, r7, r12
mov r8, r8, asl #1
mov r9, r9, asl #1
@ -411,11 +411,11 @@ mdct_butterfly_generic_loop:
sub r2, r2, r3, asl #2
ldmia r2, {r6, r7}
smull r5, r9, r10, r6
smlal r5, r9, r11, r7
smull r5, r9, r6, r10
rsb r10, r10, #0
smull r5, r8, r11, r6
smlal r5, r8, r10, r7
smlal r5, r9, r7, r11
smull r5, r8, r6, r11
smlal r5, r8, r7, r10
mov r8, r8, asl #1
mov r9, r9, asl #1