Add R600 backend

A new backend supporting AMD GPUs: Radeon HD2XXX - HD7XXX

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169915 91177308-0d34-0410-b5e6-96231b3b80d8

test/CodeGen/R600/literals.ll

@@ -0,0 +1,30 @@
+; RUN: llc < %s -march=r600 -mcpu=redwood | FileCheck %s
+
+; Test using an integer literal constant.
+; Generated ASM should be:
+; ADD_INT REG literal.x, 5
+; or
+; ADD_INT literal.x REG, 5
+
+; CHECK: ADD_INT {{[A-Z0-9,. ]*}}literal.x,{{[A-Z0-9,. ]*}} 5
+define void @i32_literal(i32 addrspace(1)* %out, i32 %in) {
+entry:
+  %0 = add i32 5, %in
+  store i32 %0, i32 addrspace(1)* %out
+  ret void
+}
+
+; Test using a float literal constant.
+; Generated ASM should be:
+; ADD REG literal.x, 5.0
+; or
+; ADD literal.x REG, 5.0
+
+; CHECK: ADD {{[A-Z0-9,. ]*}}literal.x,{{[A-Z0-9,. ]*}} {{[0-9]+}}(5.0
+define void @float_literal(float addrspace(1)* %out, float %in) {
+entry:
+  %0 = fadd float 5.0, %in
+  store float %0, float addrspace(1)* %out
+  ret void
+}
+