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| 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 | 80ac9efec467cdad333d47e587921bbfd412ca35 (patch) | |
| tree | 79ae9c7a26df2b8ae9f01da2f7d28ebb73c5bb16 /clang/lib/AST/ExprConstant.cpp | |
| parent | 334dad6aeaa59a21fbfd6a54498e79fa699a7734 (diff) | |
| download | bcm5719-llvm-80ac9efec467cdad333d47e587921bbfd412ca35.tar.gz bcm5719-llvm-80ac9efec467cdad333d47e587921bbfd412ca35.zip | |
Allow __builtin_bswap32/64 in constant expressions, like gcc does. Patch by Tijl Coosemans!
llvm-svn: 164841
Diffstat (limited to 'clang/lib/AST/ExprConstant.cpp')
| -rw-r--r-- | clang/lib/AST/ExprConstant.cpp | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/clang/lib/AST/ExprConstant.cpp b/clang/lib/AST/ExprConstant.cpp index 8f3f84d07d7..c4fd70a8c8b 100644 --- a/clang/lib/AST/ExprConstant.cpp +++ b/clang/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); |
