diff options
author | Chris Lattner <sabre@nondot.org> | 2008-11-12 08:13:36 +0000 |
---|---|---|
committer | Chris Lattner <sabre@nondot.org> | 2008-11-12 08:13:36 +0000 |
commit | d95377341b7bf916ec102cebf302a90dc1ce37b8 (patch) | |
tree | 180f1dc9f310f1d47fdcfe3746fa432771796daf /clang/lib/CodeGen/CodeGenFunction.cpp | |
parent | 51e7118c3056f7b7d8dd1fc16bfbeb854f5172c9 (diff) | |
download | bcm5719-llvm-d95377341b7bf916ec102cebf302a90dc1ce37b8.tar.gz bcm5719-llvm-d95377341b7bf916ec102cebf302a90dc1ce37b8.zip |
Handle Unary ! in EmitBranchOnBoolExpr, so that we can efficiently
codegen stuff like "if (!(X && Y))"
llvm-svn: 59115
Diffstat (limited to 'clang/lib/CodeGen/CodeGenFunction.cpp')
-rw-r--r-- | clang/lib/CodeGen/CodeGenFunction.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/clang/lib/CodeGen/CodeGenFunction.cpp b/clang/lib/CodeGen/CodeGenFunction.cpp index a797d75963f..0756de7a8a7 100644 --- a/clang/lib/CodeGen/CodeGenFunction.cpp +++ b/clang/lib/CodeGen/CodeGenFunction.cpp @@ -263,7 +263,12 @@ void CodeGenFunction::EmitBranchOnBoolExpr(const Expr *Cond, EmitBranchOnBoolExpr(CondBOp->getRHS(), TrueBlock, FalseBlock); return; } - + } + + if (const UnaryOperator *CondUOp = dyn_cast<UnaryOperator>(Cond)) { + // br(!x, t, f) -> br(x, f, t) + if (CondUOp->getOpcode() == UnaryOperator::LNot) + return EmitBranchOnBoolExpr(CondUOp->getSubExpr(), FalseBlock, TrueBlock); } // Emit the code with the fully general case. |