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| author | Andrew Waterman <waterman@eecs.berkeley.edu> | 2014-01-13 16:42:02 -0800 |
|---|---|---|
| committer | Andrew Waterman <waterman@eecs.berkeley.edu> | 2014-01-13 16:42:02 -0800 |
| commit | 77f281580773fe5217ae40bcf8a0f8bc05c28ded (patch) | |
| tree | 79885362aa51ce842ec912ba4523f36620b1dce8 /riscv/encoding.h | |
| parent | 7f457c47b339cc7c79f56bb277ed8ed989e88ae1 (diff) | |
| download | spike-77f281580773fe5217ae40bcf8a0f8bc05c28ded.zip spike-77f281580773fe5217ae40bcf8a0f8bc05c28ded.tar.gz spike-77f281580773fe5217ae40bcf8a0f8bc05c28ded.tar.bz2 | |
Improve performance for branchy code
We now use a heavily unrolled loop as the software I$, which allows the
host machine's branch target prediction to associate target PCs with
unique-ish host PCs.
Diffstat (limited to 'riscv/encoding.h')
| -rw-r--r-- | riscv/encoding.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/riscv/encoding.h b/riscv/encoding.h index 48a0108..711ef7b 100644 --- a/riscv/encoding.h +++ b/riscv/encoding.h @@ -288,7 +288,7 @@ #define MASK_SRET 0xffffffff #define MATCH_FNMADD_S 0x4f #define MASK_FNMADD_S 0x600007f -#define MATCH_JAL 0x67 +#define MATCH_JAL 0x6f #define MASK_JAL 0x7f #define MATCH_LWU 0x6003 #define MASK_LWU 0x707f @@ -392,7 +392,7 @@ #define MASK_DIVU 0xfe00707f #define MATCH_AMOSWAP_W 0x800202f #define MASK_AMOSWAP_W 0xf800707f -#define MATCH_JALR 0x6f +#define MATCH_JALR 0x67 #define MASK_JALR 0x707f #define MATCH_FSD 0x3027 #define MASK_FSD 0x707f |