From ea2c159f966be363d5c19df8d116d471604f7db5 Mon Sep 17 00:00:00 2001
From: Simon Pilgrim <llvm-dev@redking.me.uk>
Date: Mon, 6 Jan 2020 16:36:33 +0000
Subject: [PATCH] [AMDGPU] Fix "use of uninitialized variable" static analyzer
 warning. NFCI.

Add "unreachable" default case to AMDGPUTargetStreamer::getArchNameFromElfMach
---
 llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUTargetStreamer.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUTargetStreamer.cpp b/llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUTargetStreamer.cpp
index c15da8075a34..fef665c2900e 100644
--- a/llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUTargetStreamer.cpp
+++ b/llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUTargetStreamer.cpp
@@ -60,6 +60,7 @@ StringRef AMDGPUTargetStreamer::getArchNameFromElfMach(unsigned ElfMach) {
   AMDGPU::GPUKind AK;
 
   switch (ElfMach) {
+  default: llvm_unreachable("Unhandled ELF::EF_AMDGPU type");
   case ELF::EF_AMDGPU_MACH_R600_R600:      AK = GK_R600;    break;
   case ELF::EF_AMDGPU_MACH_R600_R630:      AK = GK_R630;    break;
   case ELF::EF_AMDGPU_MACH_R600_RS880:     AK = GK_RS880;   break;