1 files changed, 66 insertions, 0 deletions
diff --git a/test/CodeGen/AMDGPU/parallelorifcollapse.ll b/test/CodeGen/AMDGPU/parallelorifcollapse.ll
new file mode 100644
index 000000000000..1da1e91b8ab8
--- /dev/null
+++ b/test/CodeGen/AMDGPU/parallelorifcollapse.ll
@@ -0,0 +1,66 @@
+; Function Attrs: nounwind
+; RUN: llc < %s -march=r600 -mcpu=redwood  | FileCheck %s
+;
+; CFG flattening should use parallel-or to generate branch conditions and
+; then merge if-regions with the same bodies.
+
+; FIXME: For some reason having the allocas here allowed the flatten cfg pass
+; to do its transfomation, however now that we are using local memory for
+; allocas, the transformation isn't happening.
+; XFAIL: *
+;
+; CHECK: OR_INT
+; CHECK-NEXT: OR_INT
+; CHECK-NEXT: OR_INT
+define void @_Z9chk1D_512v() #0 {
+entry:
+  %a0 = alloca i32, align 4
+  %b0 = alloca i32, align 4
+  %c0 = alloca i32, align 4
+  %d0 = alloca i32, align 4
+  %a1 = alloca i32, align 4
+  %b1 = alloca i32, align 4
+  %c1 = alloca i32, align 4
+  %d1 = alloca i32, align 4
+  %data = alloca i32, align 4
+  %0 = load i32, i32* %a0, align 4
+  %1 = load i32, i32* %b0, align 4
+  %cmp = icmp ne i32 %0, %1
+  br i1 %cmp, label %land.lhs.true, label %if.else
+
+land.lhs.true:                                    ; preds = %entry
+  %2 = load i32, i32* %c0, align 4
+  %3 = load i32, i32* %d0, align 4
+  %cmp1 = icmp ne i32 %2, %3
+  br i1 %cmp1, label %if.then, label %if.else
+
+if.then:                                          ; preds = %land.lhs.true
+  br label %if.end
+
+if.else:                                          ; preds = %land.lhs.true, %entry
+  store i32 1, i32* %data, align 4
+  br label %if.end
+
+if.end:                                           ; preds = %if.else, %if.then
+  %4 = load i32, i32* %a1, align 4
+  %5 = load i32, i32* %b1, align 4
+  %cmp2 = icmp ne i32 %4, %5
+  br i1 %cmp2, label %land.lhs.true3, label %if.else6
+
+land.lhs.true3:                                   ; preds = %if.end
+  %6 = load i32, i32* %c1, align 4
+  %7 = load i32, i32* %d1, align 4
+  %cmp4 = icmp ne i32 %6, %7
+  br i1 %cmp4, label %if.then5, label %if.else6
+
+if.then5:                                         ; preds = %land.lhs.true3
+  br label %if.end7
+
+if.else6:                                         ; preds = %land.lhs.true3, %if.end
+  store i32 1, i32* %data, align 4
+  br label %if.end7
+
+if.end7:                                          ; preds = %if.else6, %if.then5
+  ret void
+}
+