[FastISel][AArch64] Don't fold the 'and' instruction into the 'tbz/tbnz' instruction...

[oota-llvm.git] / test / CodeGen / AArch64 / fast-isel-tbz.ll

diff --git a/test/CodeGen/AArch64/fast-isel-tbz.ll b/test/CodeGen/AArch64/fast-isel-tbz.ll
index 9fd10cb7a477ce4b3d70d35a471f56565a6ea22d..d7f46b2cfde8adc3e65bcec8d8cae078e7e21163 100644 (file)
--- a/test/CodeGen/AArch64/fast-isel-tbz.ll
+++ b/test/CodeGen/AArch64/fast-isel-tbz.ll
@@ -121,5 +121,21 @@ bb2:
   ret i32 0
 }
 
   ret i32 0
 }
 

+; Test that we don't fold the 'and' instruction into the compare.
+define i32 @icmp_eq_and_i32(i32 %a, i1 %c) {
+; CHECK-LABEL: icmp_eq_and_i32
+; CHECK:       and  [[REG:w[0-9]+]], w0, #0x4
+; CHECK-NEXT:  cbz  [[REG]], {{LBB.+_3}}
+  %1 = and i32 %a, 4
+  br i1 %c, label %bb0, label %bb2
+bb0:
+  %2 = icmp eq i32 %1, 0
+  br i1 %2, label %bb1, label %bb2, !prof !0
+bb1:
+  ret i32 1
+bb2:
+  ret i32 0
+}
+

 !0 = metadata !{metadata !"branch_weights", i32 0, i32 2147483647}
 !1 = metadata !{metadata !"branch_weights", i32 2147483647, i32 0}
 !0 = metadata !{metadata !"branch_weights", i32 0, i32 2147483647}
 !1 = metadata !{metadata !"branch_weights", i32 2147483647, i32 0}