AMDGPU: Set StackGrowsUp in MCAsmInfo

Not sure what this does though.

llvm-svn: 301229
diff --git a/llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUMCAsmInfo.cpp b/llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUMCAsmInfo.cpp
index 6c61fb1..2364e7b 100644
--- a/llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUMCAsmInfo.cpp
+++ b/llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUMCAsmInfo.cpp
@@ -15,6 +15,7 @@
 
 AMDGPUMCAsmInfo::AMDGPUMCAsmInfo(const Triple &TT) : MCAsmInfoELF() {
   CodePointerSize = (TT.getArch() == Triple::amdgcn) ? 8 : 4;
+  StackGrowsUp = true;
   HasSingleParameterDotFile = false;
   //===------------------------------------------------------------------===//
   MinInstAlignment = 4;