From 48f498fccf84d4b8888a567884cb935a4f457741 Mon Sep 17 00:00:00 2001 From: Michael Liao Date: Tue, 28 Aug 2012 16:55:13 +0000 Subject: Fix PR13704 - The increment needs to be signed value to preserve the original value when its data type is larger than 64-bit integer. llvm-svn: 162766 --- clang/lib/CodeGen/CGExprScalar.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'clang/lib/CodeGen/CGExprScalar.cpp') diff --git a/clang/lib/CodeGen/CGExprScalar.cpp b/clang/lib/CodeGen/CGExprScalar.cpp index f304317756b..58692f5cb35 100644 --- a/clang/lib/CodeGen/CGExprScalar.cpp +++ b/clang/lib/CodeGen/CGExprScalar.cpp @@ -1306,7 +1306,7 @@ ScalarExprEmitter::EmitScalarPrePostIncDec(const UnaryOperator *E, LValue LV, // Most common case by far: integer increment. } else if (type->isIntegerType()) { - llvm::Value *amt = llvm::ConstantInt::get(value->getType(), amount); + llvm::Value *amt = llvm::ConstantInt::get(value->getType(), amount, true); // Note that signed integer inc/dec with width less than int can't // overflow because of promotion rules; we're just eliding a few steps here. -- cgit v1.2.3