Changes in directory llvm/lib/Target/X86:
README.txt updated: 1.111 -> 1.112 --- Log message: A new entry --- Diffs of the changes: (+10 -0) README.txt | 10 ++++++++++ 1 files changed, 10 insertions(+) Index: llvm/lib/Target/X86/README.txt diff -u llvm/lib/Target/X86/README.txt:1.111 llvm/lib/Target/X86/README.txt:1.112 --- llvm/lib/Target/X86/README.txt:1.111 Fri May 19 15:55:31 2006 +++ llvm/lib/Target/X86/README.txt Sat May 20 02:44:53 2006 @@ -577,3 +577,13 @@ //===---------------------------------------------------------------------===// +Some ideas for instruction selection code simplification: 1. A pre-pass to +determine which chain producing node can or cannot be folded. The generated +isel code would then use the information. 2. The same pre-pass can force +ordering of TokenFactor operands to allow load / store folding. 3. During isel, +instead of recursively going up the chain operand chain, mark the chain operand +as available and put it in some work list. Select other nodes in the normal +manner. The chain operands are selected after all other nodes are selected. Uses +of chain nodes are modified after instruction selection is completed. + + _______________________________________________ llvm-commits mailing list llvm-commits@cs.uiuc.edu http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits