Switch lowering: fix assert in buildBitTests (PR23738)

[oota-llvm.git] / test / CodeGen / X86 / switch.ll

diff --git a/test/CodeGen/X86/switch.ll b/test/CodeGen/X86/switch.ll
index 66a739c8470c43f3e4e5e54d9fedaedb281aca89..a4dece65479c68a17216382007619f743ddfe799 100644 (file)
--- a/test/CodeGen/X86/switch.ll
+++ b/test/CodeGen/X86/switch.ll
@@ -534,3 +534,18 @@ return: ret void
 ; CHECK-NOT: cmpl
 ; CHECK: cmpl $99
 }
+
+
+define void @pr23738(i4 %x) {
+entry:
+  switch i4 %x, label %bb0 [
+    i4 0, label %bb1
+    i4 1, label %bb1
+    i4 -5, label %bb1
+  ]
+bb0: tail call void @g(i32 0) br label %return
+bb1: tail call void @g(i32 1) br label %return
+return: ret void
+; Don't assert due to truncating the bitwidth (64) to i4 when checking
+; that the bit-test range fits in a word.
+}