diff options
Diffstat (limited to 'compiler/nativeGen/Dwarf.hs')
| -rw-r--r-- | compiler/nativeGen/Dwarf.hs | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/compiler/nativeGen/Dwarf.hs b/compiler/nativeGen/Dwarf.hs index afeac030fd..0e645a2a56 100644 --- a/compiler/nativeGen/Dwarf.hs +++ b/compiler/nativeGen/Dwarf.hs @@ -2,6 +2,8 @@ module Dwarf ( dwarfGen ) where +import GhcPrelude + import CLabel import CmmExpr ( GlobalReg(..) ) import Config ( cProjectName, cProjectVersion ) @@ -147,7 +149,7 @@ debugSplitProcs b = concat $ H.mapElems $ mergeMaps $ map (split Nothing) b {- Note [Splitting DebugBlocks] -DWARF requires that we break up the the nested DebugBlocks produced from +DWARF requires that we break up the nested DebugBlocks produced from the C-- AST. For instance, we begin with tick trees containing nested procs. For example, @@ -180,10 +182,17 @@ procToDwarf df prc _otherwise -> showSDocDump df $ ppr $ dblLabel prc , dwLabel = dblCLabel prc , dwParent = fmap mkAsmTempDieLabel - $ mfilter (/= dblCLabel prc) + $ mfilter goodParent $ fmap dblCLabel (dblParent prc) - -- Omit parent if it would be self-referential } + where + goodParent a | a == dblCLabel prc = False + -- Omit parent if it would be self-referential + goodParent a | not (externallyVisibleCLabel a) + , debugLevel df < 2 = False + -- We strip block information when running -g0 or -g1, don't + -- refer to blocks in that case. Fixes #14894. + goodParent _ = True -- | Generate DWARF info for a block blockToDwarf :: DynFlags -> DebugBlock -> DwarfInfo |