detect arm idiv (#33)

nihui · Feb 23, 2024 · 34fadc9 · 34fadc9
1 parent a9ae51c
commit 34fadc9
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diff --git a/README.md b/README.md
@@ -218,7 +218,7 @@ _`fma4` on zen1, ISA in hypervisor, etc._
 |CPU|ISA|
 |:---:|---|
 |x86|`mmx` `sse` `sse2` `sse3` `ssse3` `sse41` `sse42` `sse4a` `xop` `avx` `f16c` `fma` `fma4` `avx2` `avx512f` `avx512bw` `avx512cd` `avx512dq` `avx512vl` `avx512vnni` `avx512bf16` `avx512ifma` `avx512vbmi` `avx512vbmi2` `avx512fp16` `avxvnni` `avxvnniint8` `avxifma`|
-|arm|`edsp` `neon` `vfpv4`|
+|arm|`edsp` `neon` `vfpv4` `idiv`|
 |aarch64|`neon` `vfpv4` `cpuid` `asimdhp` `asimddp` `asimdfhm` `bf16` `i8mm` `sve` `sve2` `svebf16` `svei8mm` `svef32mm` `sha3` `sha512` `sm3` `sm4` `amx`|
 |mips|`msa`|
 |powerpc|`vsx`|

diff --git a/main.c b/main.c
@@ -69,6 +69,7 @@ int main()
     PRINT_ISA_SUPPORT(edsp)
     PRINT_ISA_SUPPORT(neon)
     PRINT_ISA_SUPPORT(vfpv4)
+    PRINT_ISA_SUPPORT(idiv)
 
 #elif __mips__
     PRINT_ISA_SUPPORT(msa)

diff --git a/ruapu.h b/ruapu.h
@@ -217,10 +217,12 @@ RUAPU_INSTCODE(amx, 0x00201220) // amx setup
 RUAPU_INSTCODE(edsp, 0xfb20, 0x0000) // smlad r0,r0,r0,r0
 RUAPU_INSTCODE(neon, 0xef00, 0x0d40) // vadd.f32 q0,q0,q0
 RUAPU_INSTCODE(vfpv4, 0xffb6, 0x0600) // vcvt.f16.f32 d0,q0
+RUAPU_INSTCODE(idiv, 0x2003, 0xfb90, 0xf0f0) // movs r0,#3 + sdiv r0,r0,r0
 #else
 RUAPU_INSTCODE(edsp, 0xe7000010) // smlad r0,r0,r0,r0
 RUAPU_INSTCODE(neon, 0xf2000d40) // vadd.f32 q0,q0,q0
 RUAPU_INSTCODE(vfpv4, 0xf3b60600) // vcvt.f16.f32 d0,q0
+RUAPU_INSTCODE(idiv, 0xe3a00003, 0xe710f010) // movs r0,#3 + sdiv r0,r0,r0
 #endif
 
 #elif __mips__
@@ -311,6 +313,7 @@ RUAPU_ISAENTRY(amx)
 RUAPU_ISAENTRY(edsp)
 RUAPU_ISAENTRY(neon)
 RUAPU_ISAENTRY(vfpv4)
+RUAPU_ISAENTRY(idiv)
 
 #elif __mips__
 RUAPU_ISAENTRY(msa)