Prior to D69446 I had done some NFC cleanup to make landing an iterative
outliner a cleaner more straight-forward patch. Since then, it seems that has
landed but I noticed some ways it could be cleaned up. Specifically:
1) doOutline was meant to be the re-runable function, but instead
runOnceOnModule was created that just calls doOutline.
2) In D69446 we discussed that the flag allowing the re-run of the
outliner should be a flag to tell how many additional times to run
the outliner again, not the total number of times. I don't think it
makes sense to introduce a flag, but print an error if the flag is
set to 0.
This is an NFCi, the i being that I get rid of the way that the
machine-outline-runs flag could be used to tell the outliner to not run
at all, and because I renamed the flag to '-machine-outliner-reruns'.
Differential Revision: https://reviews.llvm.org/D79070
Summary: The following change is to allow the machine outlining can be applied for Nth times, where N is specified by the compiler option. By default the value of N is 1. The motivation is that the repeated machine outlining can further reduce code size. Please refer to the presentation "Improving Swift Binary Size via Link Time Optimization" in LLVM Developers' Meeting in 2019.
Reviewers: aschwaighofer, tellenbach, paquette
Reviewed By: paquette
Subscribers: tellenbach, hiraditya, llvm-commits, jinlin
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D71027
Summary: The following change is to allow the machine outlining can be applied for Nth times, where N is specified by the compiler option. By default the value of N is 1. The motivation is that the repeated machine outlining can further reduce code size. Please refer to the presentation "Improving Swift Binary Size via Link Time Optimization" in LLVM Developers' Meeting in 2019.
Reviewers: aschwaighofer, tellenbach, paquette
Reviewed By: paquette
Subscribers: tellenbach, hiraditya, llvm-commits, jinlin
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D71027
Summary: The following change is to allow the machine outlining can be applied for Nth times, where N is specified by the compiler option. By default the value of N is 1. The motivation is that the repeated machine outlining can further reduce code size. Please refer to the presentation "Improving Swift Binary Size via Link Time Optimization" in LLVM Developers' Meeting in 2019.
Reviewers: aschwaighofer, tellenbach, paquette
Reviewed By: paquette
Subscribers: tellenbach, hiraditya, llvm-commits, jinlin
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D71027
