| Dan Gohman | 6a23921 | 2009-11-20 20:19:14 +0000 | [diff] [blame] | 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] |
| Chris Lattner | d2bf432 | 2011-11-27 06:54:59 +0000 | [diff] [blame^] | 15 | store volatile i32 -1, i32* %b |
| Dan Gohman | 6a23921 | 2009-11-20 20:19:14 +0000 | [diff] [blame] | 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 | } |