From 972a34ec2c79d241318af24389b8ee042d10556a Mon Sep 17 00:00:00 2001 From: "Timothy B. Terriberry" Date: Sun, 19 May 2013 17:11:17 -0700 Subject: Add ARMv4/ARMv5E macros. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Original patch by Aurélien Zanelli : http://lists.xiph.org/pipermail/opus/2013-May/002078.html Revised version: - Add autconf detection (ported from libtheora). - Rename ARM5E to ARMv5E (an ARM5 is not the same thing as ARMv5!). - Use actual macros so they can still be selectively overridden. - Split out ARMv4 parts and add a few more ARMv4 macros. - Label blocks to make them easy to find in generated assembly. - Fix MULT16_32_Q15() so we can pass make check. The MDCT test passes in values larger than 2**30 for b. The new version should be just as fast (or faster, since it's easier to merge the shift with following instructions), and there's no appreciable impact on accuracy (FFT/MDCT SNR actually goes up in most cases). - Fix register constraints. We were using early-clobber flags in a bunch of places that didn't need them, and commutative-pair flags in a bunch of places that weren't actually commutative. This was Jean-Marc's fault (the original code came from Speex). - Simplify silk_CLZ16(). - Port over iFFT C_MULC asm by Andree Buschmann from Rockbox. - Speed up the C_MULC asm by using LDRD, allowing more flexible addressing, re-ordering instructions to avoid some stalls, allowing more flexible register allocation, and getting things out of the inline asm block so the compiler can schedule them better. - Add C_MUL and C_MUL4 asm for the FFT to the encoder based, on the new C_MULC. In total, this patch gives a 22.3% speed-up on test_opus_encoder on a 600 MHz Cortex A8 using gcc 4.2.1, When restricted to ARMv4 optimizations, it gives a 9.6% speed-up on the same processor/compiler. On the conformance test vectors: Average mono quality is 97.0583 % Average stereo quality is 97.775 % --- autogen.sh | 1 + 1 file changed, 1 insertion(+) (limited to 'autogen.sh') diff --git a/autogen.sh b/autogen.sh index 13c55c41..c9542665 100755 --- a/autogen.sh +++ b/autogen.sh @@ -135,6 +135,7 @@ fi echo "Generating configuration files for $package, please wait...." +ACLOCAL_FLAGS="-I m4" echo " $ACLOCAL $ACLOCAL_FLAGS" $ACLOCAL $ACLOCAL_FLAGS || exit 1 echo " autoheader" -- cgit v1.2.3