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From: Rudi Heitbaum <rudi@heitbaum.com>
Date: Sat, 9 Mar 2024 18:55:53 +0000
Subject: [PATCH] Add OPUS_ARM_INLINE_DOTPROD dotprod check
fixes:
../meson.build:322:9: ERROR: Unknown variable "opus_arm_may_have_dotprod"
after:
dotprod check passes through.
Checking if "compiler supports gcc-style inline assembly" compiles: YES
Checking if "assembler supports EDSP instructions on ARM" compiles: YES
Checking if "assembler supports ARMv6 media instructions on ARM" compiles: YES
Checking if "assembler supports NEON instructions on ARM" compiles: YES
Checking if "assembler supports DOTPROD instructions on ARM" compiles: NO
Program perl found: YES (/usr/bin/perl)
Fetching value of define "__APPLE__" : (undefined)
Checking if "compiler supports ARMv7/AArch64 NEON intrinsics" : links: YES
Checking if "compiler supports AArch64 NEON intrinsics" : links: NO
Checking if "compiler supports AArch64 NEON intrinsics with -mfpu=neon" : links: NO
Message: Compiler does not support AArch64 NEON intrinsics
Checking if "compiler supports AArch64 DOTPROD intrinsics" : links: NO
Checking if "compiler supports AArch64 DOTPROD intrinsics with -march=armv8.2-a+dotprod" : links: NO
Message: Compiler does not support AArch64 DOTPROD intrinsics
refer:
- https://community.arm.com/arm-community-blogs/b/tools-software-ides-blog/posts/exploring-the-arm-dot-product-instructions
test with:
armv7ve-none-linux-gnueabihf-gcc test.c
/tmp/cc02sooK.s: Assembler messages:
/tmp/cc02sooK.s:32: Error: bad instruction `udot v0.4s,v1.16b,v2.16b'
aarch64-none-linux-gnu-gcc test.c
/tmp/ccnVi9Ec.s: Assembler messages:
/tmp/ccnVi9Ec.s:12: Error: selected processor does not support `udot v0.4s,v1.16b,v2.16b'
aarch64-none-linux-gnu-gcc -march=armv8.2-a+dotprod test.c
Signed-off-by: Rudi Heitbaum <rudi@heitbaum.com>
Signed-off-by: Jean-Marc Valin <jmvalin@jmvalin.ca>
---
meson.build | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/meson.build b/meson.build
index bd23744cadb1..8624f0c38a59 100644
--- a/meson.build
+++ b/meson.build
@@ -252,6 +252,13 @@ if not opt_asm.disabled()
opus_conf.set('OPUS_ARM_INLINE_NEON', 1)
inline_optimization += ['NEON']
endif
+
+ # AS_ASM_ARM_DOTPROD
+ if cc.compiles(asm_tmpl.format('udot v0.4s,v1.16b,v2.16b'),
+ name : 'assembler supports DOTPROD instructions on ARM')
+ opus_conf.set('OPUS_ARM_INLINE_DOTPROD', 1)
+ inline_optimization += ['DOTPROD']
+ endif
endif
# We need Perl to translate RVCT-syntax asm to gas syntax
@@ -273,6 +280,9 @@ if not opt_asm.disabled()
opus_arm_may_have_neon = opus_conf.has('OPUS_ARM_INLINE_NEON')
opus_arm_presume_neon = opus_arm_may_have_neon and opus_can_presume_simd
+ opus_arm_may_have_dotprod = opus_conf.has('OPUS_ARM_INLINE_DOTPROD')
+ opus_arm_presume_dotprod = opus_arm_may_have_dotprod and opus_can_presume_simd
+
if not opt_rtcd.disabled()
if not opus_arm_may_have_edsp
message('Trying to force-enable armv5e EDSP instructions...')
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