commit ad952ad8f05a1c5082a6b7ac8627008fa24d722a
author Bob Wilson <bob.wilson@apple.com> Tue Oct 18 17:34:51 2011 +0000
committer Bob Wilson <bob.wilson@apple.com> Tue Oct 18 17:34:51 2011 +0000
tree cbb3b398bd2102a32f4110b0d9e655d55385f17f
parent db2b18febaea04d01b3dcb24fc44d5be7bd27a00

Fix incorrect check for sign-extended constant BUILD_VECTOR.
<rdar://problem/10298332>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142371 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/ARM/ARMISelLowering.cpp

diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp
index 1615f5b..7753006 100644
--- a/lib/Target/ARM/ARMISelLowering.cpp
+++ b/lib/Target/ARM/ARMISelLowering.cpp
@@ -4527,7 +4527,7 @@
       unsigned HalfSize = EltSize / 2;
       if (isSigned) {
         int64_t SExtVal = C->getSExtValue();
-        if ((SExtVal >> HalfSize) != (SExtVal >> EltSize))
+        if (SExtVal != SExtVal << (64 - HalfSize) >> (64 - HalfSize))
           return false;
       } else {
         if ((C->getZExtValue() >> HalfSize) != 0)