Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/llvm/test/Transforms/SimplifyCFG/extract-cost.ll

@@ -0,0 +1,22 @@
+; RUN: opt -simplifycfg -S  < %s | FileCheck %s
+
+declare { i32, i1 } @llvm.uadd.with.overflow.i32(i32, i32) #1
+
+define i32 @f(i32 %a, i32 %b) #0 {
+entry:
+  %uadd = tail call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 %a, i32 %b)
+  %cmp = extractvalue { i32, i1 } %uadd, 1
+  br i1 %cmp, label %return, label %if.end
+
+if.end:                                           ; preds = %entry
+  %0 = extractvalue { i32, i1 } %uadd, 0
+  br label %return
+
+return:                                           ; preds = %entry, %if.end
+  %retval.0 = phi i32 [ %0, %if.end ], [ 0, %entry ]
+  ret i32 %retval.0
+
+; CHECK-LABEL: @f(
+; CHECK-NOT: phi
+; CHECK: select
+}