[llvm] MC: Store fragment content and fixups out-of-line (PR #146307)

[Fangrui Song via llvm-commits]

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@@ -296,10 +301,7 @@ class LLVM_ABI MCSection {
 
 /// Interface implemented by fragments that contain encoded instructions and/or
 /// data.
-///
 class MCEncodedFragment : public MCFragment {
-  uint8_t BundlePadding = 0;
----------------
MaskRay wrote:

Thanks. Kept BundlePadding at the beginning.


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Benchmark | Old | New

-- | -- | --
kimwitu++ | 234MiB | 221MiB (-5.37%)
sqlite3 | 201MiB | 182MiB (-9.12%)
consumer-typeset | 154MiB | 144MiB (-6.18%)
Bullet | 198MiB | 193MiB (-2.41%)
tramp3d-v4 | 624MiB | 592MiB (-5.13%)
mafft | 124MiB | 122MiB (-1.49%)
ClamAV | 213MiB | 196MiB (-8.39%)
lencod | 264MiB | 262MiB (-0.98%)
SPASS | 288MiB | 285MiB (-1.13%)
7zip | 432MiB | 397MiB (-8.05%)
geomean | 245MiB | 233MiB (-4.87%)




https://github.com/llvm/llvm-project/pull/146307