; RUN: opt < %s -basicaa -licm -S | FileCheck %s ; RUN: opt -aa-pipeline=basic-aa -passes='require,require,require,loop(licm)' -S %s | FileCheck %s target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" target triple = "x86_64-unknown-linux-gnu" ; Make sure we don't hoist the store out of the loop; %a would ; have the wrong value if f() unwinds define void @test1(i32* nocapture noalias %a, i1 zeroext %y) uwtable { entry: br label %for.body for.body: %i.03 = phi i32 [ 0, %entry ], [ %inc, %for.inc ] %0 = load i32, i32* %a, align 4 %add = add nsw i32 %0, 1 store i32 %add, i32* %a, align 4 br i1 %y, label %if.then, label %for.inc ; CHECK: define void @test1 ; CHECK: load i32, i32* ; CHECK-NEXT: add ; CHECK-NEXT: store i32 if.then: tail call void @f() br label %for.inc for.inc: %inc = add nuw nsw i32 %i.03, 1 %exitcond = icmp eq i32 %inc, 10000 br i1 %exitcond, label %for.cond.cleanup, label %for.body for.cond.cleanup: ret void } ; We can hoist the store out of the loop here; if f() unwinds, ; the lifetime of %a ends. define void @test2(i1 zeroext %y) uwtable { entry: %a = alloca i32 br label %for.body for.body: %i.03 = phi i32 [ 0, %entry ], [ %inc, %for.inc ] %0 = load i32, i32* %a, align 4 %add = add nsw i32 %0, 1 store i32 %add, i32* %a, align 4 br i1 %y, label %if.then, label %for.inc if.then: tail call void @f() br label %for.inc for.inc: %inc = add nuw nsw i32 %i.03, 1 %exitcond = icmp eq i32 %inc, 10000 br i1 %exitcond, label %for.cond.cleanup, label %for.body for.cond.cleanup: ret void ; CHECK: define void @test2 ; CHECK: store i32 ; CHECK-NEXT: ret void ret void } declare void @f() uwtable