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all: use the new LLVM pass manager

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The old LLVM pass manager is deprecated and should not be used anymore.
Moreover, the pass manager builder (which we used to set up a pass
pipeline) is actually removed from LLVM entirely in LLVM 17:
https://reviews.llvm.org/D145387
https://reviews.llvm.org/D145835

The new pass manager does change the binary size in many cases: both
growing and shrinking it. However, on average the binary size remains
more or less the same.

This is needed as a preparation for LLVM 17.
This commit is contained in:
Ayke van Laethem
2023-09-19 22:37:44 +02:00
committed by Ron Evans
parent 1da1abe314
commit 3b1913ac57
10 changed files with 76 additions and 118 deletions
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builder/sizes_test.go
+3 -3
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@@ -41,9 +41,9 @@ func TestBinarySize(t *testing.T) {
// This is a small number of very diverse targets that we want to test.
tests := []sizeTest{
// microcontrollers
{"hifive1b", "examples/echo", 4568, 280, 0, 2252},
{"microbit", "examples/serial", 2728, 388, 8, 2256},
{"wioterminal", "examples/pininterrupt", 5996, 1484, 116, 6816},
{"hifive1b", "examples/echo", 4484, 280, 0, 2252},
{"microbit", "examples/serial", 2724, 388, 8, 2256},
{"wioterminal", "examples/pininterrupt", 6000, 1484, 116, 6816},
// TODO: also check wasm. Right now this is difficult, because
// wasm binaries are run through wasm-opt and therefore the