1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -mergeicmps -mtriple=x86_64-unknown-unknown -S | FileCheck %s
4 %"struct.std::pair" = type { i32, i32 }
6 ; Check that the transformation is avoided when GEP has a use outside of the
7 ; parant block of the load instruction.
9 define zeroext i32 @opeq1(
10 ; CHECK-LABEL: @opeq1(
11 ; CHECK-NOT: [[MEMCMP:%.*]] = call i32 @memcmp
13 %"struct.std::pair"* nocapture readonly dereferenceable(16) %a,
14 %"struct.std::pair"* nocapture readonly dereferenceable(16) %b) local_unnamed_addr #0 {
16 %first.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %a, i64 0, i32 1
17 %0 = load i32, i32* %first.i, align 4
18 %first1.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %b, i64 0, i32 1
19 %1 = load i32, i32* %first1.i, align 4
20 %cmp.i = icmp eq i32 %0, %1
21 br i1 %cmp.i, label %land.rhs.i, label %opeq1.exit
24 %second.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %a, i64 0, i32 0
25 %2 = load i32, i32* %second.i, align 4
26 %second2.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %b, i64 0, i32 0
27 %3 = load i32, i32* %second2.i, align 4
28 %cmp3.i = icmp eq i32 %2, %3
32 %4 = phi i1 [ false, %entry ], [ %cmp3.i, %land.rhs.i]
33 %5 = load i32, i32* %first.i, align 4
34 %6 = select i1 %4, i32 %5, i32 0