[Hexagon] Add more lit tests

llvm-svn: 327271

1 files changed, 29 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/Hexagon/dag-combine-select-or0.ll b/llvm/test/CodeGen/Hexagon/dag-combine-select-or0.ll
new file mode 100644
index 00000000000..172a07b1968
--- /dev/null
+++ b/llvm/test/CodeGen/Hexagon/dag-combine-select-or0.ll
@@ -0,0 +1,29 @@
+; RUN: llc -march=hexagon -O2 < %s | FileCheck %s
+; Make sure no mux with 0 is generated.
+; CHECK-NOT: mux{{.*}}#0
+; CHECK: endloop
+
+target triple = "hexagon"
+
+; Function Attrs: nounwind readnone
+define i32 @f0(i32 %a0, i32 %a1) #0 {
+b0:
+  %v0 = icmp ugt i32 %a0, %a1
+  br label %b1
+
+b1:                                               ; preds = %b1, %b0
+  %v1 = phi i32 [ 0, %b0 ], [ %v5, %b1 ]
+  %v2 = phi i32 [ 0, %b0 ], [ %v7, %b1 ]
+  %v3 = phi i32 [ 1, %b0 ], [ %v6, %b1 ]
+  %v4 = select i1 %v0, i32 %v3, i32 0
+  %v5 = or i32 %v1, %v4
+  %v6 = shl i32 %v3, 1
+  %v7 = add i32 %v2, 1
+  %v8 = icmp eq i32 %v7, 32
+  br i1 %v8, label %b2, label %b1
+
+b2:                                               ; preds = %b1
+  ret i32 %v5
+}
+
+attributes #0 = { nounwind readnone }