aboutsummaryrefslogtreecommitdiff
path: root/include/llvm/Transforms/Utils/GlobalStatus.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/llvm/Transforms/Utils/GlobalStatus.h')
-rw-r--r--include/llvm/Transforms/Utils/GlobalStatus.h31
1 files changed, 17 insertions, 14 deletions
diff --git a/include/llvm/Transforms/Utils/GlobalStatus.h b/include/llvm/Transforms/Utils/GlobalStatus.h
index c36609508808..8cc265bdf81d 100644
--- a/include/llvm/Transforms/Utils/GlobalStatus.h
+++ b/include/llvm/Transforms/Utils/GlobalStatus.h
@@ -10,11 +10,13 @@
#ifndef LLVM_TRANSFORMS_UTILS_GLOBALSTATUS_H
#define LLVM_TRANSFORMS_UTILS_GLOBALSTATUS_H
-#include "llvm/IR/Instructions.h"
+#include "llvm/Support/AtomicOrdering.h"
namespace llvm {
-class Value;
+
+class Constant;
class Function;
+class Value;
/// It is safe to destroy a constant iff it is only used by constants itself.
/// Note that constants cannot be cyclic, so this test is pretty easy to
@@ -27,11 +29,11 @@ bool isSafeToDestroyConstant(const Constant *C);
/// accurate.
struct GlobalStatus {
/// True if the global's address is used in a comparison.
- bool IsCompared;
+ bool IsCompared = false;
/// True if the global is ever loaded. If the global isn't ever loaded it
/// can be deleted.
- bool IsLoaded;
+ bool IsLoaded = false;
/// Keep track of what stores to the global look like.
enum StoredType {
@@ -51,32 +53,33 @@ struct GlobalStatus {
/// This global is stored to by multiple values or something else that we
/// cannot track.
Stored
- } StoredType;
+ } StoredType = NotStored;
/// If only one value (besides the initializer constant) is ever stored to
/// this global, keep track of what value it is.
- Value *StoredOnceValue;
+ Value *StoredOnceValue = nullptr;
/// These start out null/false. When the first accessing function is noticed,
/// it is recorded. When a second different accessing function is noticed,
/// HasMultipleAccessingFunctions is set to true.
- const Function *AccessingFunction;
- bool HasMultipleAccessingFunctions;
+ const Function *AccessingFunction = nullptr;
+ bool HasMultipleAccessingFunctions = false;
/// Set to true if this global has a user that is not an instruction (e.g. a
/// constant expr or GV initializer).
- bool HasNonInstructionUser;
+ bool HasNonInstructionUser = false;
/// Set to the strongest atomic ordering requirement.
- AtomicOrdering Ordering;
+ AtomicOrdering Ordering = AtomicOrdering::NotAtomic;
+
+ GlobalStatus();
/// Look at all uses of the global and fill in the GlobalStatus structure. If
/// the global has its address taken, return true to indicate we can't do
/// anything with it.
static bool analyzeGlobal(const Value *V, GlobalStatus &GS);
-
- GlobalStatus();
};
-}
-#endif
+} // end namespace llvm
+
+#endif // LLVM_TRANSFORMS_UTILS_GLOBALSTATUS_H