Changes in directory llvm/lib/CodeGen:
README.txt updated: 1.2 -> 1.3 --- Log message: New entries. --- Diffs of the changes: (+21 -0) README.txt | 21 +++++++++++++++++++++ 1 files changed, 21 insertions(+) Index: llvm/lib/CodeGen/README.txt diff -u llvm/lib/CodeGen/README.txt:1.2 llvm/lib/CodeGen/README.txt:1.3 --- llvm/lib/CodeGen/README.txt:1.2 Wed Mar 28 03:30:04 2007 +++ llvm/lib/CodeGen/README.txt Wed Mar 28 21:48:56 2007 @@ -65,3 +65,24 @@ 4. As stated in 3, not as simple as cloning in some cases. The target will have to decide how to remat it. For example, an ARM 2-piece constant generation instruction is remat'ed as a load from constantpool. + +//===---------------------------------------------------------------------===// + +bb27 ... + ... + %reg1037 = ADDri %reg1039, 1 + %reg1038 = ADDrs %reg1032, %reg1039, %NOREG, 10 + Successors according to CFG: 0x8b03bf0 (#5) + +bb76 (0x8b03bf0, LLVM BB @0x8b032d0, ID#5): + Predecessors according to CFG: 0x8b0c5f0 (#3) 0x8b0a7c0 (#4) + %reg1039 = PHI %reg1070, mbb<bb76.outer,0x8b0c5f0>, %reg1037, mbb<bb27,0x8b0a7c0> + +Note ADDri is not a two-address instruction. However, its result %reg1037 is an +operand of the PHI node in bb76 and its operand %reg1039 is the result of the +PHI node. We should treat it as a two-address code and make sure the ADDri is +scheduled after any node that reads %reg1039. + +//===---------------------------------------------------------------------===// + +Re-Materialize load from frame index. _______________________________________________ llvm-commits mailing list llvm-commits@cs.uiuc.edu http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits