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| author | Richard Smith <richard-llvm@metafoo.co.uk> | 2019-09-13 02:20:00 +0000 |
|---|---|---|
| committer | Richard Smith <richard-llvm@metafoo.co.uk> | 2019-09-13 02:20:00 +0000 |
| commit | 91e6928464113135f0deff4aa476bab560b1bb14 (patch) | |
| tree | 01ae10e998ebcde1cccfdd5ee3ea8f25b5e289a8 /include/clang/Basic | |
| parent | 2bef3ea48658ec42d7e4a0cff421a3c7f8c0375a (diff) | |
| download | clang-91e6928464113135f0deff4aa476bab560b1bb14.tar.gz | |
For PR17164: split -fno-lax-vector-conversion into three different
levels:
-- none: no lax vector conversions [new GCC default]
-- integer: only conversions between integer vectors [old GCC default]
-- all: all conversions between same-size vectors [Clang default]
For now, Clang still defaults to "all" mode, but per my proposal on
cfe-dev (2019-04-10) the default will be changed to "integer" as soon as
that doesn't break lots of testcases. (Eventually I'd like to change the
default to "none" to match GCC and general sanity.)
Following GCC's behavior, the driver flag -flax-vector-conversions is
translated to -flax-vector-conversions=integer.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@371805 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/clang/Basic')
| -rw-r--r-- | include/clang/Basic/LangOptions.def | 3 | ||||
| -rw-r--r-- | include/clang/Basic/LangOptions.h | 10 |
2 files changed, 12 insertions, 1 deletions
diff --git a/include/clang/Basic/LangOptions.def b/include/clang/Basic/LangOptions.def index dec281e793..6b497a0517 100644 --- a/include/clang/Basic/LangOptions.def +++ b/include/clang/Basic/LangOptions.def @@ -119,7 +119,8 @@ LANGOPT(AppleKext , 1, 0, "Apple kext support") BENIGN_LANGOPT(PascalStrings, 1, 0, "Pascal string support") LANGOPT(WritableStrings , 1, 0, "writable string support") LANGOPT(ConstStrings , 1, 0, "const-qualified string support") -LANGOPT(LaxVectorConversions , 1, 1, "lax vector conversions") +ENUM_LANGOPT(LaxVectorConversions, LaxVectorConversionKind, 2, + LaxVectorConversionKind::All, "lax vector conversions") LANGOPT(AltiVec , 1, 0, "AltiVec-style vector initializers") LANGOPT(ZVector , 1, 0, "System z vector extensions") LANGOPT(Exceptions , 1, 0, "exception handling") diff --git a/include/clang/Basic/LangOptions.h b/include/clang/Basic/LangOptions.h index e3b7737fa3..5f808f04e9 100644 --- a/include/clang/Basic/LangOptions.h +++ b/include/clang/Basic/LangOptions.h @@ -184,6 +184,16 @@ public: FEA_On }; + enum class LaxVectorConversionKind { + /// Permit no implicit vector bitcasts. + None, + /// Permit vector bitcasts between integer vectors with different numbers + /// of elements but the same total bit-width. + Integer, + /// Permit vector bitcasts between all vectors with the same total + /// bit-width. + All, + }; public: /// Set of enabled sanitizers. |