diff options
| author | Richard Smith <richard-llvm@metafoo.co.uk> | 2012-09-28 20:20:52 +0000 |
|---|---|---|
| committer | Richard Smith <richard-llvm@metafoo.co.uk> | 2012-09-28 20:20:52 +0000 |
| commit | 70d38f3179251bb3e7253a52bf54f8fa2314590a (patch) | |
| tree | 46ee9625372573bfc1f27b811616cc40db4d2f44 /lib/AST/ExprConstant.cpp | |
| parent | 65eaecf09ea407626fa5b88178b579f2ce5f4177 (diff) | |
Allow __builtin_bswap32/64 in constant expressions, like gcc does. Patch by Tijl Coosemans!
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164841 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/AST/ExprConstant.cpp')
| -rw-r--r-- | lib/AST/ExprConstant.cpp | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/AST/ExprConstant.cpp b/lib/AST/ExprConstant.cpp index 8f3f84d07d..c4fd70a8c8 100644 --- a/lib/AST/ExprConstant.cpp +++ b/lib/AST/ExprConstant.cpp @@ -4296,6 +4296,15 @@ bool IntExprEvaluator::VisitCallExpr(const CallExpr *E) { return Error(E); } + case Builtin::BI__builtin_bswap32: + case Builtin::BI__builtin_bswap64: { + APSInt Val; + if (!EvaluateInteger(E->getArg(0), Val, Info)) + return false; + + return Success(Val.byteSwap(), E); + } + case Builtin::BI__builtin_classify_type: return Success(EvaluateBuiltinClassifyType(E), E); |