diff options
Diffstat (limited to 'target/hexagon/README')
| -rw-r--r-- | target/hexagon/README | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/target/hexagon/README b/target/hexagon/README index 746ebec378..c1d8c8d0ab 100644 --- a/target/hexagon/README +++ b/target/hexagon/README @@ -183,10 +183,11 @@ when the override is present. } We also generate an analyze_<tag> function for each instruction. Currently, -these functions record the writes to registers by calling ctx_log_*. During -gen_start_packet, we invoke the analyze_<tag> function for each instruction in -the packet, and we mark the implicit writes. After the analysis is performed, -we initialize the result register for each of the predicated assignments. +these functions record the reads and writes to registers by calling ctx_log_*. +During gen_start_packet, we invoke the analyze_<tag> function for each instruction in +the packet, and we mark the implicit writes. The analysis determines if the packet +semantics can be short-circuited. If not, we initialize the result register for each +of the predicated assignments. In addition to instruction semantics, we use a generator to create the decode tree. This generation is a four step process. |