1; RUN: opt < %s -simplifycfg -S | FileCheck %s 2 3; Use a select to make this a single BB. 4; Also, make sure the profile metadata is propagated to the select (PR26636). 5 6define i32 @FoldTwoEntryPHINode(i1 %C, i32 %V1, i32 %V2, i16 %V3) { 7entry: 8 br i1 %C, label %then, label %else, !prof !0, !unpredictable !1 9then: 10 %V4 = or i32 %V2, %V1 11 br label %Cont 12else: 13 %V5 = sext i16 %V3 to i32 14 br label %Cont 15Cont: 16 %V6 = phi i32 [ %V5, %else ], [ %V4, %then ] 17 call i32 @FoldTwoEntryPHINode( i1 false, i32 0, i32 0, i16 0 ) 18 ret i32 %V1 19 20; CHECK-LABEL: @FoldTwoEntryPHINode( 21; CHECK-NEXT: entry: 22; CHECK-NEXT: %V5 = sext i16 %V3 to i32 23; CHECK-NEXT: %V4 = or i32 %V2, %V1 24; CHECK-NEXT: %V6 = select i1 %C, i32 %V4, i32 %V5, !prof !0, !unpredictable !1 25; CHECK-NEXT: %0 = call i32 @FoldTwoEntryPHINode(i1 false, i32 0, i32 0, i16 0) 26; CHECK-NEXT: ret i32 %V1 27} 28 29!0 = !{!"branch_weights", i32 3, i32 5} 30!1 = !{} 31 32; CHECK: !0 = !{!"branch_weights", i32 3, i32 5} 33; CHECK: !1 = !{} 34 35