commit 1144af3c9b4da48cd581156e05b24261c8de366a
author Richard Smith <richard-llvm@metafoo.co.uk> Fri Aug 24 23:29:28 2012 +0000
committer Richard Smith <richard-llvm@metafoo.co.uk> Fri Aug 24 23:29:28 2012 +0000
tree 49da576a97bfdab702528643450798baa54c790f
parent cac59d8ae815596f4f6b77d1a5414c0591168ea5

Fix integer undefined behavior due to signed left shift overflow in LLVM.
Reviewed offline by chandlerc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162623 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/PowerPC/InstPrinter/PPCInstPrinter.cpp

diff --git a/lib/Target/PowerPC/InstPrinter/PPCInstPrinter.cpp b/lib/Target/PowerPC/InstPrinter/PPCInstPrinter.cpp
index d175e3e..413142e 100644
--- a/lib/Target/PowerPC/InstPrinter/PPCInstPrinter.cpp
+++ b/lib/Target/PowerPC/InstPrinter/PPCInstPrinter.cpp
@@ -137,7 +137,7 @@
 void PPCInstPrinter::printS5ImmOperand(const MCInst *MI, unsigned OpNo,
                                        raw_ostream &O) {
   char Value = MI->getOperand(OpNo).getImm();
-  Value = (Value << (32-5)) >> (32-5);
+  Value = SignExtend32<5>(Value);
   O << (int)Value;
 }