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On Aug 9, 2010, at 10:44 AM, Peter S. Housel wrote: > Several instruction set architectures include arithmetic operations that can trap on overflow, or support this feature with a separate trap-on-overflow-flag instruction (such as the x86 INTO instruction). > > > I am adding a back-end to the Open Dylan compiler to generate LLVM IR. The original back-end, which generates x86

Several instruction set architectures include arithmetic operations that can trap on overflow, or support this feature with a separate trap-on-overflow-flag instruction (such as the x86 INTO instruction). I am adding a back-end to the Open Dylan compiler to generate LLVM IR. The original back-end, which generates x86 machine code, makes use of the INTO instruction, and the runtime turns the

...stand... why can't you use a branch on a llvm.sadd.with.overflow that goes to an llvm.trap? This is what clang does with -ftrapv. > > -Chris -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20100809/edc30562/attachment.html>