1; RUN: opt -S < %s -passes='loop-mssa(loop-rotate,licm)' -verify-dom-info -verify-loop-info | FileCheck %s 2; PR2624 unroll multiple exits 3 4@mode_table = global [4 x i32] zeroinitializer ; <ptr> [#uses=1] 5 6; CHECK-LABEL: @f( 7; CHECK-NOT: bb: 8define i8 @f() { 9entry: 10 tail call i32 @fegetround( ) ; <i32>:0 [#uses=1] 11 br label %bb 12 13bb: ; preds = %bb4, %entry 14 %mode.0 = phi i8 [ 0, %entry ], [ %indvar.next, %bb4 ] ; <i8> [#uses=4] 15 zext i8 %mode.0 to i32 ; <i32>:1 [#uses=1] 16 getelementptr [4 x i32], ptr @mode_table, i32 0, i32 %1 ; <ptr>:2 [#uses=1] 17 load i32, ptr %2, align 4 ; <i32>:3 [#uses=1] 18 icmp eq i32 %3, %0 ; <i1>:4 [#uses=1] 19 br i1 %4, label %bb1, label %bb2 20 21bb1: ; preds = %bb 22 ret i8 %mode.0 23 24bb2: ; preds = %bb 25 icmp eq i8 %mode.0, 1 ; <i1>:5 [#uses=1] 26 br i1 %5, label %bb5, label %bb4 27 28bb4: ; preds = %bb2 29 %indvar.next = add i8 %mode.0, 1 ; <i8> [#uses=1] 30 br label %bb 31 32bb5: ; preds = %bb2 33 tail call void @raise_exception( ) noreturn 34 unreachable 35} 36 37declare i32 @fegetround() 38 39declare void @raise_exception() noreturn 40 41;CHECK: for.body.lr.ph: 42;CHECK-NEXT: %0 = load i8, ptr %CurPtr, align 1 43;CHECK-NEXT: %conv2 = sext i8 %0 to i32 44;CHECK-NEXT: br label %for.body 45 46define i32 @foo(ptr %CurPtr, i32 %a) #0 { 47entry: 48 br label %for.cond 49 50for.cond: ; preds = %for.inc, %entry 51 %i.0 = phi i32 [ 1, %entry ], [ %inc, %for.inc ] 52 %cmp = icmp ne i32 %i.0, %a 53 br i1 %cmp, label %for.body, label %return 54 55for.body: ; preds = %for.cond 56 %idxprom = zext i32 %i.0 to i64 57 %arrayidx = getelementptr inbounds i8, ptr %CurPtr, i64 %idxprom 58 %0 = load i8, ptr %arrayidx, align 1 59 %conv = sext i8 %0 to i32 60 %1 = load i8, ptr %CurPtr, align 1 61 %conv2 = sext i8 %1 to i32 62 %cmp3 = icmp ne i32 %conv, %conv2 63 br i1 %cmp3, label %return, label %for.inc 64 65for.inc: ; preds = %for.body 66 %inc = add i32 %i.0, 1 67 br label %for.cond 68 69return: ; preds = %for.cond, %for.body 70 %retval.0 = phi i32 [ 0, %for.body ], [ 1, %for.cond ] 71 ret i32 %retval.0 72} 73 74attributes #0 = { nounwind uwtable } 75