[cfe-dev] [llvm-dev] [RFC] ASM Goto With Output Constraints

Finkel, Hal J. via cfe-dev cfe-dev at lists.llvm.org
Thu Jun 27 15:20:17 PDT 2019

On 6/27/19 2:31 PM, Craig Topper via llvm-dev wrote:
What about SelectionDAG representation? Currently we expand callbr to INLINEASM_BR and BR. Both of which are terminators. But in order to support outputs we would need to put CopyFromReg nodes between them.

Or maybe we should support having terminators that define values? People ask about this from time to time, and that seems like the higher-overall-value extension to make to the MI representation.




~Nick Desaulniers
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Hal Finkel
Lead, Compiler Technology and Programming Languages
Leadership Computing Facility
Argonne National Laboratory
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