1 files changed, 56 insertions, 0 deletions
diff --git a/test/Transforms/SimplifyCFG/R600/parallelorifcollapse.ll b/test/Transforms/SimplifyCFG/R600/parallelorifcollapse.ll
new file mode 100644
index 0000000000..e1bb5fc510
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/R600/parallelorifcollapse.ll
@@ -0,0 +1,56 @@
+; Function Attrs: nounwind
+; RUN: opt < %s -mtriple=r600-unknown-linux-gnu -optimizecfg -basicaa -S | FileCheck %s
+;
+; CFG optimization should use parallel-or mode to generate branch conditions and
+; then merge if-regions with the same bodies, which should result in 2 branches.
+; To see the assembly output without this transformation, remove -basicaa option.
+;
+; CHECK: or i1
+; CHECK-NEXT: br
+; CHECK: br
+; CHECK: ret
+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* %a0, align 4
+  %1 = load i32* %b0, align 4
+  %cmp = icmp ne i32 %0, %1
+  br i1 %cmp, label %land.lhs.true, label %if.end
+
+land.lhs.true:                                    ; preds = %entry
+  %2 = load i32* %c0, align 4
+  %3 = load i32* %d0, align 4
+  %cmp1 = icmp ne i32 %2, %3
+  br i1 %cmp1, label %if.then, label %if.end
+
+if.then:                                          ; preds = %land.lhs.true
+  store i32 1, i32* %data, align 4
+  br label %if.end
+
+if.end:                                           ; preds = %if.then, %land.lhs.true, %entry
+  %4 = load i32* %a1, align 4
+  %5 = load i32* %b1, align 4
+  %cmp2 = icmp ne i32 %4, %5
+  br i1 %cmp2, label %land.lhs.true3, label %if.end6
+
+land.lhs.true3:                                   ; preds = %if.end
+  %6 = load i32* %c1, align 4
+  %7 = load i32* %d1, align 4
+  %cmp4 = icmp ne i32 %6, %7
+  br i1 %cmp4, label %if.then5, label %if.end6
+
+if.then5:                                         ; preds = %land.lhs.true3
+  store i32 1, i32* %data, align 4
+  br label %if.end6
+
+if.end6:                                          ; preds = %if.then5, %land.lhs.true3, %if.end
+  ret void
+}