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
5 ; Check that IndVarSimplify's result is not influenced by stray calls to
6 ; ScalarEvolution in debug builds. However, -verify-indvars may still do
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
13 ; In this test, adding -verify-indvars causes %tmp13 to not be optimized away.
17 target triple = "x86_64-unknown-linux-gnu"
19 @b = external dso_local local_unnamed_addr global i32
21 define dso_local void @foo() {
26 %tmp8 = add nuw nsw i32 %tmp13, 1
27 store i32 undef, i32* @b
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