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| author | Janne Grunau <janne-libav@jannau.net> | 2016-11-18 09:36:59 +0200 |
|---|---|---|
| committer | Martin Storsjö <martin@martin.st> | 2016-11-18 23:17:26 +0200 |
| commit | e5b0fc170f85b00f7dd0ac514918fb5c95253d39 (patch) | |
| tree | 802e9996ee5994417ef1e8879c457d99c9f266a5 /libavcodec/arm | |
| parent | 3c7fa8cbb93dba96acb12aef6e00d929c1da1ae8 (diff) | |
| download | ffmpeg-streaming-e5b0fc170f85b00f7dd0ac514918fb5c95253d39.zip ffmpeg-streaming-e5b0fc170f85b00f7dd0ac514918fb5c95253d39.tar.gz | |
arm: vp9itxfm: Simplify the stack alignment code
This is one instruction less for thumb, and only have got
1/2 arm/thumb specific instructions.
Signed-off-by: Martin Storsjö <martin@martin.st>
Diffstat (limited to 'libavcodec/arm')
| -rw-r--r-- | libavcodec/arm/vp9itxfm_neon.S | 28 |
1 files changed, 12 insertions, 16 deletions
diff --git a/libavcodec/arm/vp9itxfm_neon.S b/libavcodec/arm/vp9itxfm_neon.S index cdb43b5..5d73d84 100644 --- a/libavcodec/arm/vp9itxfm_neon.S +++ b/libavcodec/arm/vp9itxfm_neon.S @@ -791,15 +791,13 @@ function ff_vp9_\txfm1\()_\txfm2\()_16x16_add_neon, export=1 .ifnc \txfm1\()_\txfm2,idct_idct vpush {q4-q7} .endif - mov r7, sp @ Align the stack, allocate a temp buffer -T mov r12, sp -T bic r12, r12, #15 -T sub r12, r12, #512 -T mov sp, r12 -A bic sp, sp, #15 -A sub sp, sp, #512 +T mov r7, sp +T and r7, r7, #15 +A and r7, sp, #15 + add r7, r7, #512 + sub sp, sp, r7 mov r4, r0 mov r5, r1 @@ -828,7 +826,7 @@ A sub sp, sp, #512 bl \txfm2\()16_1d_4x16_pass2_neon .endr - mov sp, r7 + add sp, sp, r7 .ifnc \txfm1\()_\txfm2,idct_idct vpop {q4-q7} .endif @@ -1117,15 +1115,13 @@ function ff_vp9_idct_idct_32x32_add_neon, export=1 beq idct32x32_dc_add_neon push {r4-r7,lr} vpush {q4-q7} - mov r7, sp @ Align the stack, allocate a temp buffer -T mov r12, sp -T bic r12, r12, #15 -T sub r12, r12, #2048 -T mov sp, r12 -A bic sp, sp, #15 -A sub sp, sp, #2048 +T mov r7, sp +T and r7, r7, #15 +A and r7, sp, #15 + add r7, r7, #2048 + sub sp, sp, r7 mov r4, r0 mov r5, r1 @@ -1143,7 +1139,7 @@ A sub sp, sp, #2048 bl idct32_1d_4x32_pass2_neon .endr - mov sp, r7 + add sp, sp, r7 vpop {q4-q7} pop {r4-r7,pc} endfunc |
