Restore the capability to manipulate datalayout from the C API

Summary:
This consist in variosu addition to the C API:

  LLVMTargetDataRef LLVMGetModuleDataLayout(LLVMModuleRef M);
  void LLVMSetModuleDataLayout(LLVMModuleRef M, LLVMTargetDataRef DL);
  LLVMTargetDataRef LLVMCreateTargetMachineData(LLVMTargetMachineRef T);

Reviewers: joker.eph, Wallbraker, echristo

Subscribers: axw

Differential Revision: http://reviews.llvm.org/D17255

llvm-svn: 260936

1 files changed, 6 insertions, 0 deletions

diff --git a/llvm/tools/llvm-c-test/echo.cpp b/llvm/tools/llvm-c-test/echo.cpp
index b19ae951d4e..774e339879d 100644
--- a/llvm/tools/llvm-c-test/echo.cpp
+++ b/llvm/tools/llvm-c-test/echo.cpp
@@ -16,6 +16,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm-c-test.h"
+#include "llvm-c/Target.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/Support/ErrorHandling.h"
 
@@ -629,6 +630,11 @@ int llvm_echo(void) {
   LLVMContextRef Ctx = LLVMContextCreate();
   LLVMModuleRef M = LLVMModuleCreateWithNameInContext("<stdin>", Ctx);
 
+  LLVMSetTarget(M, LLVMGetTarget(Src));
+  LLVMSetModuleDataLayout(M, LLVMGetModuleDataLayout(Src));
+  if (strcmp(LLVMGetDataLayoutStr(M), LLVMGetDataLayoutStr(Src)))
+    report_fatal_error("Inconsistent DataLayout string representation");
+
   clone_functions(Src, M);
   char *Str = LLVMPrintModuleToString(M);
   fputs(Str, stdout);