1 ; RUN: opt -basicaa -load-combine -instcombine -S < %s | FileCheck %s 2 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 3 target triple = "x86_64-unknown-linux-gnu" 4 5 define 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 22 define 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
