Fix an index array check.

Patch by Marius Wachtler.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196561 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/R600/AMDGPUSubtarget.cpp

@@ -80,7 +80,7 @@ AMDGPUSubtarget::isTargetELF() const {
 }
 size_t
 AMDGPUSubtarget::getDefaultSize(uint32_t dim) const {
-  if (dim > 3) {
+  if (dim > 2) {
     return 1;
   } else {
     return DefaultSize[dim];