[Git][ghc/ghc][wip/romes/ncg-perf] ncg: Don't execute dwarfGen for SDoc unnecessarily

[Rodrigo Mesquita (@alt-romes)]

Rodrigo Mesquita pushed to branch wip/romes/ncg-perf at Glasgow Haskell Compiler / GHC


Commits:
e051a138 by Rodrigo Mesquita at 2024-07-10T15:38:58+01:00
ncg: Don't execute dwarfGen for SDoc unnecessarily

`dwarfGen @SDoc` is only needed if -ddump-asm is enabled (see emitNativeCode).

- - - - -


1 changed file:

- compiler/GHC/CmmToAsm.hs


Changes:

=====================================
compiler/GHC/CmmToAsm.hs
=====================================
@@ -234,7 +234,8 @@ finishNativeGen logger config modLoc bufh us ngs
                   else do
                      compPath <- getCurrentDirectory
                      let (dwarf_h, us') = dwarfGen compPath config modLoc us (ngs_debug ngs)
-                         (dwarf_s, _)   = dwarfGen compPath config modLoc us (ngs_debug ngs)
+                         -- `dwarfGen @SDoc` is only needed if -ddump-asm is enabled (see emitNativeCode)
+                         ~(dwarf_s, _)   = dwarfGen compPath config modLoc us (ngs_debug ngs)
                      emitNativeCode logger config bufh dwarf_h dwarf_s
                      return us'
 



View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/e051a1385d727e3fbafa39ac9b4cd13c508a5fde

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