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1; RUN: opt -basicaa -load-combine -instcombine -S < %s | FileCheck %s
2target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
3target triple = "x86_64-unknown-linux-gnu"
4
5define i64 @test1(i32* nocapture readonly noalias %a, i32* nocapture readonly noalias %b) {
6; CHECK-LABEL: @test1
7
8; CHECK: load i64, i64*
9; CHECK: ret i64
10
11  %load1 = load i32, i32* %a, align 4
12  %conv = zext i32 %load1 to i64
13  %arrayidx1 = getelementptr inbounds i32, i32* %a, i64 1
14  store i32 %load1, i32* %b, align 4
15  %load2 = load i32, i32* %arrayidx1, align 4
16  %conv2 = zext i32 %load2 to i64
17  %shl = shl nuw i64 %conv2, 32
18  %add = or i64 %shl, %conv
19  ret i64 %add
20}
21
22define i64 @test2(i32* nocapture readonly %a, i32* nocapture readonly %b) {
23; CHECK-LABEL: @test2
24
25; CHECK: load i32, i32*
26; CHECK: load i32, i32*
27; CHECK: ret i64
28
29  %load1 = load i32, i32* %a, align 4
30  %conv = zext i32 %load1 to i64
31  %arrayidx1 = getelementptr inbounds i32, i32* %a, i64 1
32  store i32 %load1, i32* %b, align 4
33  %load2 = load i32, i32* %arrayidx1, align 4
34  %conv2 = zext i32 %load2 to i64
35  %shl = shl nuw i64 %conv2, 32
36  %add = or i64 %shl, %conv
37  ret i64 %add
38}
39
40