From b354ef31cf32cfd9b801d68fd3262d041ac9b162 Mon Sep 17 00:00:00 2001
From: Rafael Espindola <rafael.espindola@gmail.com>
Date: Wed, 18 Mar 2015 22:19:16 +0000
Subject: [PATCH] Teach getDefaultFormat that we only support ELF on some
 architectures.

This should bring the windows bots back.

It is a bit ugly, but it is better than what we had before: The triple would
say that the object format was COFF, but llc/llvm-mc would produce an ELF.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@232683 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Support/Triple.cpp   | 17 +++++++++++++++++
 test/CodeGen/R600/elf.ll |  3 +++
 2 files changed, 20 insertions(+)

diff --git a/lib/Support/Triple.cpp b/lib/Support/Triple.cpp
index d74173a6621..4b4ee283e64 100644
--- a/lib/Support/Triple.cpp
+++ b/lib/Support/Triple.cpp
@@ -439,6 +439,23 @@ static const char *getObjectFormatTypeName(Triple::ObjectFormatType Kind) {
 }
 
 static Triple::ObjectFormatType getDefaultFormat(const Triple &T) {
+  switch (T.getArch()) {
+  default:
+    break;
+  case Triple::hexagon:
+  case Triple::mips:
+  case Triple::mipsel:
+  case Triple::mips64:
+  case Triple::mips64el:
+  case Triple::r600:
+  case Triple::amdgcn:
+  case Triple::sparc:
+  case Triple::sparcv9:
+  case Triple::systemz:
+  case Triple::xcore:
+    return Triple::ELF;
+  }
+
   if (T.isOSDarwin())
     return Triple::MachO;
   else if (T.isOSWindows())
diff --git a/test/CodeGen/R600/elf.ll b/test/CodeGen/R600/elf.ll
index 127da2c8acc..d0fd06a3437 100644
--- a/test/CodeGen/R600/elf.ll
+++ b/test/CodeGen/R600/elf.ll
@@ -5,6 +5,9 @@
 ; RUN: llc < %s -march=amdgcn -mcpu=carrizo -verify-machineinstrs -filetype=obj | llvm-readobj -s -symbols - | FileCheck --check-prefix=ELF %s
 ; RUN: llc < %s -march=amdgcn -mcpu=carrizo -verify-machineinstrs -o - | FileCheck --check-prefix=CONFIG --check-prefix=TYPICAL %s
 
+; Test that we don't try to produce a COFF file on windows
+; RUN: llc < %s -mtriple=amdgcn-pc-mingw -mcpu=SI -verify-machineinstrs -filetype=obj | llvm-readobj -s -symbols - | FileCheck --check-prefix=ELF %s
+
 ; ELF: Format: ELF32
 ; ELF: Name: .AMDGPU.config
 ; ELF: Type: SHT_PROGBITS