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This patch makes LSR generate better code for SystemZ in the cases of memory intrinsics, Load->Store pairs or comparison of immediate with memory. In order to achieve this, the following common code changes were made: * New TTI hook: LSRWithInstrQueries(), which defaults to false. Controls if LSR should do instruction-based addressing evaluations by calling isLegalAddressingMode() with the Instruction pointers. * In LoopStrengthReduce: handle address operands of memset, memmove and memcpy as address uses, and call isFoldableMemAccessOffset() for any LSRUse::Address, not just loads or stores. SystemZ changes: * isLSRCostLess() implemented with Insns first, and without ImmCost. * New function supportedAddressingMode() that is a helper for TTI methods looking at Instructions passed via pointers. Review: Ulrich Weigand, Quentin Colombet https://reviews.llvm.org/D35262 https://reviews.llvm.org/D35049 llvm-svn: 308729 |
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.. | ||
Analysis | ||
AsmParser | ||
BinaryFormat | ||
Bitcode | ||
CodeGen | ||
DebugInfo | ||
Demangle | ||
ExecutionEngine | ||
Fuzzer | ||
IR | ||
IRReader | ||
LineEditor | ||
Linker | ||
LTO | ||
MC | ||
Object | ||
ObjectYAML | ||
Option | ||
Passes | ||
ProfileData | ||
Support | ||
TableGen | ||
Target | ||
Testing | ||
ToolDrivers | ||
Transforms | ||
XRay | ||
CMakeLists.txt | ||
LLVMBuild.txt |