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isPow2DivCheap That name doesn't specify signed or unsigned. Lazy as I am, I eventually read the function and variable comments. It turns out that this is strictly about signed div. But I discovered that the comments are wrong: srl/add/sra is not the general sequence for signed integer division by power-of-2. We need one more 'sra': sra/srl/add/sra That's the sequence produced in DAGCombiner. The first 'sra' may be removed when dividing by exactly '2', but that's a special case. This patch corrects the comments, changes the name of the flag bit, and changes the name of the accessor methods. No functional change intended. Differential Revision: http://reviews.llvm.org/D5010 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216237 91177308-0d34-0410-b5e6-96231b3b80d8 |
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Analysis | ||
AsmParser | ||
Bitcode | ||
CodeGen | ||
DebugInfo | ||
ExecutionEngine | ||
IR | ||
IRReader | ||
LineEditor | ||
Linker | ||
LTO | ||
MC | ||
Object | ||
Option | ||
ProfileData | ||
Support | ||
TableGen | ||
Target | ||
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CMakeLists.txt | ||
LLVMBuild.txt | ||
Makefile |