1; RUN: opt -indvars -stats -disable-output < %s 2>&1 | FileCheck %s --check-prefix=STATS 2; RUN: opt -indvars -S < %s | FileCheck %s --check-prefix=IR 3; REQUIRES: asserts 4 5; Check that IndVarSimplify's result is not influenced by stray calls to 6; ScalarEvolution in debug builds. However, -verify-indvars may still do 7; such calls. 8; llvm.org/PR44815 9 10; STATS: 1 scalar-evolution - Number of loops with trip counts computed by force 11; STATS: 2 scalar-evolution - Number of loops with predictable loop counts 12 13; In this test, adding -verify-indvars causes %tmp13 to not be optimized away. 14; IR-LABEL: @foo 15; IR-NOT: phi i32 16 17target triple = "x86_64-unknown-linux-gnu" 18 19@b = external dso_local local_unnamed_addr global i32 20 21define dso_local void @foo() { 22tmp0: 23 br label %tmp12 24 25tmp7: 26 %tmp8 = add nuw nsw i32 %tmp13, 1 27 store i32 undef, i32* @b 28 br label %tmp12 29 30tmp12: 31 %tmp13 = phi i32 [ 2, %tmp0 ], [ %tmp8, %tmp7 ] 32 %tmp14 = phi i32 [ 1, %tmp0 ], [ %tmp13, %tmp7 ] 33 %tmp15 = icmp ult i32 %tmp14, undef 34 br i1 %tmp15, label %tmp7, label %tmp16 35 36tmp16: 37 ret void 38} 39