mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-25 22:12:57 +02:00
86dd733bc8
1. Teach it to use overlapping unaligned load / store to copy / set the trailing bytes. e.g. On 86, use two pairs of movups / movaps for 17 - 31 byte copies. 2. Use f64 for memcpy / memset on targets where i64 is not legal but f64 is. e.g. x86 and ARM. 3. When memcpy from a constant string, do *not* replace the load with a constant if it's not possible to materialize an integer immediate with a single instruction (required a new target hook: TLI.isIntImmLegal()). 4. Use unaligned load / stores more aggressively if target hooks indicates they are "fast". 5. Update ARM target hooks to use unaligned load / stores. e.g. vld1.8 / vst1.8. Also increase the threshold to something reasonable (8 for memset, 4 pairs for memcpy). This significantly improves Dhrystone, up to 50% on ARM iOS devices. rdar://12760078 llvm-svn: 169791 |
||
---|---|---|
.. | ||
Analysis | ||
Archive | ||
AsmParser | ||
Bitcode | ||
CodeGen | ||
DebugInfo | ||
ExecutionEngine | ||
Linker | ||
MC | ||
Object | ||
Option | ||
Support | ||
TableGen | ||
Target | ||
Transforms | ||
VMCore | ||
CMakeLists.txt | ||
LLVMBuild.txt | ||
Makefile |