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1; RUN: opt -passes='loop(loop-reduce)' %s -o - -S | FileCheck %s2 3; Required metadata to trigger previously failing assertion.4target datalayout = "e-m:e-i64:64-n32:64"5 6@f = external dso_local local_unnamed_addr global i32, align 47 8declare i32 @a() local_unnamed_addr9declare i32 @e(i32) local_unnamed_addr10 11define dso_local i32 @b() {12entry:13 %call = tail call i32 @a()14 %tobool.not = icmp eq i32 %call, 015 br i1 %tobool.not, label %cleanup.cont.critedge, label %if.then16 17if.then: ; preds = %entry18; It's ok to modify this test in the future should be able to split critical19; edges here, just noting that this is the critical edge that we care about.20; CHECK: callbr void asm sideeffect "", "!i"()21; CHECK-NEXT: to label %return [label %cleanup.cont.critedge]22 callbr void asm sideeffect "", "!i"()23 to label %return [label %cleanup.cont.critedge]24 25cleanup.cont.critedge: ; preds = %entry, %if.then26 br label %return27 28return: ; preds = %if.then, %cleanup.cont.critedge29 %retval.0 = phi i32 [ 4, %cleanup.cont.critedge ], [ 0, %if.then ]30 ret i32 %retval.031}32 33define dso_local i32 @do_pages_move_nr_pages() local_unnamed_addr {34entry:35 br label %for.cond36 37for.cond: ; preds = %if.end3, %entry38 %g.0 = phi i32 [ undef, %entry ], [ %inc, %if.end3 ]39 %0 = load i32, ptr @f, align 440 %tobool.not = icmp eq i32 %0, 041 br i1 %tobool.not, label %if.end3, label %if.then42 43if.then: ; preds = %for.cond44 %call.i = tail call i32 @a()45 %tobool.not.i = icmp eq i32 %call.i, 046 br i1 %tobool.not.i, label %if.then2, label %if.then.i47 48if.then.i: ; preds = %if.then49 callbr void asm sideeffect "", "!i"()50 to label %if.end3 [label %if.then2]51 52if.then2: ; preds = %if.then, %if.then.i53 %g.0.lcssa = phi i32 [ %g.0, %if.then ], [ %g.0, %if.then.i ]54 %call4 = tail call i32 @e(i32 %g.0.lcssa)55 ret i32 undef56 57if.end3: ; preds = %for.cond, %if.then.i58 %inc = add nsw i32 %g.0, 159 br label %for.cond60}61 62