Changes in directory llvm/lib/Target/X86:
README.txt updated: 1.21 -> 1.22 --- Log message: Minor update. --- Diffs of the changes: (+9 -0) README.txt | 9 +++++++++ 1 files changed, 9 insertions(+) Index: llvm/lib/Target/X86/README.txt diff -u llvm/lib/Target/X86/README.txt:1.21 llvm/lib/Target/X86/README.txt:1.22 --- llvm/lib/Target/X86/README.txt:1.21 Thu Jan 12 16:54:21 2006 +++ llvm/lib/Target/X86/README.txt Thu Jan 12 19:20:42 2006 @@ -112,3 +112,12 @@ //===---------------------------------------------------------------------===// Check if load folding would add a cycle in the dag. + +//===---------------------------------------------------------------------===// + +Model X86 EFLAGS as a real register to avoid redudant cmp / test. e.g. + + cmpl $1, %eax + setg %al + testb %al, %al # unnecessary + jne .BB7 _______________________________________________ llvm-commits mailing list llvm-commits@cs.uiuc.edu http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
