It's not necessary to do rounding for alloca operations when the requested
alignment is equal to the stack alignment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Sparc/SparcSubtarget.cpp b/lib/Target/Sparc/SparcSubtarget.cpp
new file mode 100644
index 0000000..9940fcf
--- /dev/null
+++ b/lib/Target/Sparc/SparcSubtarget.cpp
@@ -0,0 +1,43 @@
+//===- SparcSubtarget.cpp - SPARC Subtarget Information -------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by Chris Lattner and is distributed under the
+// University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the SPARC specific subclass of TargetSubtarget.
+//
+//===----------------------------------------------------------------------===//
+
+#include "SparcSubtarget.h"
+#include "SparcGenSubtarget.inc"
+using namespace llvm;
+
+// FIXME: temporary.
+#include "llvm/Support/CommandLine.h"
+namespace {
+ cl::opt<bool> EnableV9("enable-sparc-v9-insts", cl::Hidden,
+ cl::desc("Enable V9 instructions in the V8 target"));
+}
+
+SparcSubtarget::SparcSubtarget(const Module &M, const std::string &FS) {
+ // Set the default features.
+ IsV9 = false;
+ V8DeprecatedInsts = false;
+ IsVIS = false;
+
+ // Determine default and user specified characteristics
+ std::string CPU = "generic";
+
+ // FIXME: autodetect host here!
+ CPU = "v9"; // What is a good way to detect V9?
+
+ // Parse features string.
+ ParseSubtargetFeatures(FS, CPU);
+
+ // Unless explicitly enabled, disable the V9 instructions.
+ if (!EnableV9)
+ IsV9 = false;
+}