1 ; RUN: opt < %s -internalize -ipsccp -S | FileCheck %s 2 ; PR5569 3 4 ; IPSCCP should prove that the blocks are dead and delete them, and 5 ; properly handle the dangling blockaddress constants. 6 7 ; CHECK: @bar.l = internal constant [2 x i8*] [i8* inttoptr (i32 1 to i8*), i8* inttoptr (i32 1 to i8*)] 8 9 @code = global [5 x i32] [i32 0, i32 0, i32 0, i32 0, i32 1], align 4 ; <[5 x i32]*> [#uses=0] 10 @bar.l = internal constant [2 x i8*] [i8* blockaddress(@bar, %lab0), i8* blockaddress(@bar, %end)] ; <[2 x i8*]*> [#uses=1] 11 12 define void @foo(i32 %x) nounwind readnone { 13 entry: 14 %b = alloca i32, align 4 ; <i32*> [#uses=1] 15 store volatile i32 -1, i32* %b 16 ret void 17 } 18 19 define void @bar(i32* nocapture %pc) nounwind readonly { 20 entry: 21 br label %indirectgoto 22 23 lab0: ; preds = %indirectgoto 24 %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1] 25 br label %indirectgoto 26 27 end: ; preds = %indirectgoto 28 ret void 29 30 indirectgoto: ; preds = %lab0, %entry 31 %indvar = phi i32 [ %indvar.next, %lab0 ], [ 0, %entry ] ; <i32> [#uses=2] 32 %pc.addr.0 = getelementptr i32* %pc, i32 %indvar ; <i32*> [#uses=1] 33 %tmp1.pn = load i32* %pc.addr.0 ; <i32> [#uses=1] 34 %indirect.goto.dest.in = getelementptr inbounds [2 x i8*]* @bar.l, i32 0, i32 %tmp1.pn ; <i8**> [#uses=1] 35 %indirect.goto.dest = load i8** %indirect.goto.dest.in ; <i8*> [#uses=1] 36 indirectbr i8* %indirect.goto.dest, [label %lab0, label %end] 37 } 38 39 define i32 @main() nounwind readnone { 40 entry: 41 ret i32 0 42 } 43
