| Safe Haskell | None |
|---|---|
| Language | Haskell2010 |
Debug
Contents
Synopsis
- data DebugBlock = DebugBlock {
- dblProcedure :: !Label
- dblLabel :: !Label
- dblCLabel :: !CLabel
- dblHasInfoTbl :: !Bool
- dblParent :: !(Maybe DebugBlock)
- dblTicks :: ![CmmTickish]
- dblSourceTick :: !(Maybe CmmTickish)
- dblPosition :: !(Maybe Int)
- dblUnwind :: [UnwindPoint]
- dblBlocks :: ![DebugBlock]
- dblIsEntry :: DebugBlock -> Bool
- cmmDebugGen :: ModLocation -> RawCmmGroup -> [DebugBlock]
- cmmDebugLabels :: (i -> Bool) -> GenCmmGroup d g (ListGraph i) -> [Label]
- cmmDebugLink :: [Label] -> LabelMap [UnwindPoint] -> [DebugBlock] -> [DebugBlock]
- debugToMap :: [DebugBlock] -> LabelMap DebugBlock
- type UnwindTable = Map GlobalReg (Maybe UnwindExpr)
- data UnwindPoint = UnwindPoint !CLabel !UnwindTable
- data UnwindExpr
- toUnwindExpr :: CmmExpr -> UnwindExpr
Documentation
data DebugBlock Source #
Debug information about a block of code. Ticks scope over nested blocks.
Constructors
Fields
- dblProcedure :: !Label
Entry label of containing proc
- dblLabel :: !Label
Hoopl label
- dblCLabel :: !CLabel
Output label
- dblHasInfoTbl :: !Bool
Has an info table?
- dblParent :: !(Maybe DebugBlock)
The parent of this proc. See Note [Splitting DebugBlocks]
- dblTicks :: ![CmmTickish]
Ticks defined in this block
- dblSourceTick :: !(Maybe CmmTickish)
Best source tick covering block
- dblPosition :: !(Maybe Int)
Output position relative to other blocks.
Nothingmeans the block was optimized out - dblUnwind :: [UnwindPoint]
- dblBlocks :: ![DebugBlock]
Nested blocks
Instances
Instance details
Defined in Debug
dblIsEntry :: DebugBlock -> Bool Source #
Is this the entry block?
cmmDebugGen :: ModLocation -> RawCmmGroup -> [DebugBlock] Source #
Extract debug data from a group of procedures. We will prefer source notes that come from the given module (presumably the module that we are currently compiling).
cmmDebugLabels :: (i -> Bool) -> GenCmmGroup d g (ListGraph i) -> [Label] Source #
cmmDebugLink :: [Label] -> LabelMap [UnwindPoint] -> [DebugBlock] -> [DebugBlock] Source #
Sets position and unwind table fields in the debug block tree according to native generated code.
debugToMap :: [DebugBlock] -> LabelMap DebugBlock Source #
Converts debug blocks into a label map for easier lookups
Unwinding information
type UnwindTable = Map GlobalReg (Maybe UnwindExpr) Source #
Maps registers to expressions that yield their "old" values
further up the stack. Most interesting for the stack pointer Sp,
but might be useful to document saved registers, too. Note that a
register's value will be Nothing when the register's previous
value cannot be reconstructed.
data UnwindPoint Source #
A label associated with an UnwindTable
Constructors
Instances
Instance details
Defined in Debug
data UnwindExpr Source #
Expressions, used for unwind information
Constructors
toUnwindExpr :: CmmExpr -> UnwindExpr Source #
Conversion of Cmm expressions to unwind expressions. We check for unsupported operator usages and simplify the expression as far as possible.