Make VLAs usable, and make basic usage work correctly. Also, add a
simple test that actually does VLA codegen.
Note that despite the fact that the alloca isn't in the entry block, it
should dominate all uses; this is guaranteed by the restrictions on goto
into VLA scope in C99.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61291 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGDecl.cpp b/lib/CodeGen/CGDecl.cpp
index 86bc347..db6aae6 100644
--- a/lib/CodeGen/CGDecl.cpp
+++ b/lib/CodeGen/CGDecl.cpp
@@ -192,17 +192,9 @@
// Allocate memory for the array.
llvm::Value *VLA = Builder.CreateAlloca(llvm::Type::Int8Ty, VLASize, "vla");
- VLA = Builder.CreateBitCast(VLA, LElemPtrTy, "tmp");
-
- llvm::AllocaInst *Alloc =
- CreateTempAlloca(LElemPtrTy, D.getIdentifier()->getName());
-
- // FIXME: Volatile?
- Builder.CreateStore(VLA, Alloc);
-
- DeclPtr = Alloc;
+ DeclPtr = Builder.CreateBitCast(VLA, LElemPtrTy, "tmp");
}
-
+
llvm::Value *&DMEntry = LocalDeclMap[&D];
assert(DMEntry == 0 && "Decl already exists in localdeclmap!");
DMEntry = DeclPtr;