1; RUN: opt -passes=indvars -S < %s | FileCheck %s 2 3; Check that IndVarSimplify's result is not influenced by stray calls to 4; ScalarEvolution in debug builds. However, -verify-passes=indvars may still do 5; such calls. 6; llvm.org/PR44815 7 8; In this test, adding -verify-passes=indvars causes %tmp13 to not be optimized away. 9; CHECK-LABEL: @foo 10; CHECK-NOT: phi i32 11 12target triple = "x86_64-unknown-linux-gnu" 13 14@b = external dso_local local_unnamed_addr global i32 15 16define dso_local void @foo() { 17tmp0: 18 br label %tmp12 19 20tmp7: 21 %tmp8 = add nuw nsw i32 %tmp13, 1 22 store i32 undef, ptr @b 23 br label %tmp12 24 25tmp12: 26 %tmp13 = phi i32 [ 2, %tmp0 ], [ %tmp8, %tmp7 ] 27 %tmp14 = phi i32 [ 1, %tmp0 ], [ %tmp13, %tmp7 ] 28 %tmp15 = icmp ult i32 %tmp14, undef 29 br i1 %tmp15, label %tmp7, label %tmp16 30 31tmp16: 32 ret void 33} 34