1 ; RUN: opt < %s -S -instcombine | FileCheck %s 2 @A = extern_weak global i32, align 4 3 @B = extern_weak global i32, align 4 4 5 define i32 @foo(i1 %which) { 6 entry: 7 br i1 %which, label %final, label %delay 8 9 delay: 10 br label %final 11 12 ; CHECK-LABEL: final: 13 ; CHECK: phi i32 [ 1, %entry ], [ select (i1 icmp eq (i32* @A, i32* @B), i32 2, i32 1), %delay ] 14 final: 15 %use2 = phi i1 [ false, %entry ], [ icmp eq (i32* @A, i32* @B), %delay ] 16 %value = select i1 %use2, i32 2, i32 1 17 ret i32 %value 18 } 19 20
