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Tweak the Printer code in runtime for smaller code #8023

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merged 7 commits into from
Jan 22, 2024

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steven-johnson
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TL;DR: template expansion meant that we had more replicated code than expected from the inline expansion of code in Printer and friends. Restructured and added NEVER_INLINE to try to make the call sites as small as possible. It's a modest code-size savings but nonzero... e.g., the linux-x86-64 .o output from correct_cross_compilation drops from 164280 bytes to 162936 bytes.

TL;DR: template expansion meant that we had more replicated code than expected from the inline expansion of code in Printer and friends. Restructured and added NEVER_INLINE to try to make the call sites as small as possible. It's a modest code-size savings but nonzero... e.g., the linux-x86-64 .o output from correct_cross_compilation drops from 164280 bytes to 162936 bytes.
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(soooo many subtle off by one errors, sigh)

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Finally green! PTAL

@steven-johnson steven-johnson merged commit e0e9f63 into main Jan 22, 2024
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@steven-johnson steven-johnson deleted the srj/printer-tweak branch January 22, 2024 21:43
ardier pushed a commit to ardier/Halide-mutation that referenced this pull request Mar 3, 2024
* Tweak the Printer code in runtime for smaller code

TL;DR: template expansion meant that we had more replicated code than expected from the inline expansion of code in Printer and friends. Restructured and added NEVER_INLINE to try to make the call sites as small as possible. It's a modest code-size savings but nonzero... e.g., the linux-x86-64 .o output from correct_cross_compilation drops from 164280 bytes to 162936 bytes.

* Update printer.h

* debug

* Update HalideTestHelpers.cmake

* Update printer.h

* fixes
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2 participants