[MSP430] Fix data layout string.

Summary:
Without this patch some types have incorrect size and/or alignment
according to the MSP430 EABI.

Reviewers: asl, awygle

Reviewed By: asl

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D34561

llvm-svn: 306159

1 files changed, 6 insertions, 2 deletions

diff --git a/llvm/lib/Target/MSP430/MSP430TargetMachine.cpp b/llvm/lib/Target/MSP430/MSP430TargetMachine.cpp
index d8fdc8ba674..982c6fea62d 100644
--- a/llvm/lib/Target/MSP430/MSP430TargetMachine.cpp
+++ b/llvm/lib/Target/MSP430/MSP430TargetMachine.cpp
@@ -32,16 +32,20 @@ static Reloc::Model getEffectiveRelocModel(Optional<Reloc::Model> RM) {
   return *RM;
 }
 
+static std::string computeDataLayout(const Triple &TT, StringRef CPU,
+                                     const TargetOptions &Options) {
+  return "e-m:e-p:16:16-i32:16-i64:16-f32:16-f64:16-a:8-n8:16-S16";
+}
+
 MSP430TargetMachine::MSP430TargetMachine(const Target &T, const Triple &TT,
                                          StringRef CPU, StringRef FS,
                                          const TargetOptions &Options,
                                          Optional<Reloc::Model> RM,
                                          CodeModel::Model CM,
                                          CodeGenOpt::Level OL)
-    : LLVMTargetMachine(T, "e-m:e-p:16:16-i32:16:32-a:16-n8:16", TT, CPU, FS,
+    : LLVMTargetMachine(T, computeDataLayout(TT, CPU, Options), TT, CPU, FS,
                         Options, getEffectiveRelocModel(RM), CM, OL),
       TLOF(make_unique<TargetLoweringObjectFileELF>()),
-      // FIXME: Check DataLayout string.
       Subtarget(TT, CPU, FS, *this) {
   initAsmInfo();
 }