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Diffstat (limited to 'docs')
| -rw-r--r-- | docs/users_guide/debugging.rst | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/docs/users_guide/debugging.rst b/docs/users_guide/debugging.rst index d11cc04fd0..c6d90e642d 100644 --- a/docs/users_guide/debugging.rst +++ b/docs/users_guide/debugging.rst @@ -588,6 +588,20 @@ Formatting dumps let expressions. This is helpful when your code does a lot of unboxing. +.. ghc-flag:: -dhex-word-literals + :shortdesc: Print values of type `Word#` in hexadecimal. + :type: dynamic + + Print values of type `Word#` and `Word64#` (but not values of + type `Int#` and `Int64#`) in hexadecimal instead of decimal. + The hexadecimal is zero-padded to make the length of the + representation a power of two. For example: `0x0A0A##`, + `0x000FFFFF##`, `0xC##`. This flag may be helpful when you + are producing a bit pattern that to expect to work correctly on a 32-bit + or a 64-bit architecture. Dumping hexadecimal literals after + optimizations and constant folding makes it easier to confirm + that the generated bit pattern is correct. + .. ghc-flag:: -dno-debug-output :shortdesc: Suppress unsolicited debugging output :type: dynamic |