| ; RUN: opt < %s -internalize -ipsccp -S | FileCheck %s |
| ; PR5569 |
| |
| ; IPSCCP should prove that the blocks are dead and delete them, and |
| ; properly handle the dangling blockaddress constants. |
| |
| ; CHECK: @bar.l = internal constant [2 x i8*] [i8* inttoptr (i32 1 to i8*), i8* inttoptr (i32 1 to i8*)] |
| |
| @code = global [5 x i32] [i32 0, i32 0, i32 0, i32 0, i32 1], align 4 ; <[5 x i32]*> [#uses=0] |
| @bar.l = internal constant [2 x i8*] [i8* blockaddress(@bar, %lab0), i8* blockaddress(@bar, %end)] ; <[2 x i8*]*> [#uses=1] |
| |
| define void @foo(i32 %x) nounwind readnone { |
| entry: |
| %b = alloca i32, align 4 ; <i32*> [#uses=1] |
| store volatile i32 -1, i32* %b |
| ret void |
| } |
| |
| define void @bar(i32* nocapture %pc) nounwind readonly { |
| entry: |
| br label %indirectgoto |
| |
| lab0: ; preds = %indirectgoto |
| %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1] |
| br label %indirectgoto |
| |
| end: ; preds = %indirectgoto |
| ret void |
| |
| indirectgoto: ; preds = %lab0, %entry |
| %indvar = phi i32 [ %indvar.next, %lab0 ], [ 0, %entry ] ; <i32> [#uses=2] |
| %pc.addr.0 = getelementptr i32, i32* %pc, i32 %indvar ; <i32*> [#uses=1] |
| %tmp1.pn = load i32, i32* %pc.addr.0 ; <i32> [#uses=1] |
| %indirect.goto.dest.in = getelementptr inbounds [2 x i8*], [2 x i8*]* @bar.l, i32 0, i32 %tmp1.pn ; <i8**> [#uses=1] |
| %indirect.goto.dest = load i8*, i8** %indirect.goto.dest.in ; <i8*> [#uses=1] |
| indirectbr i8* %indirect.goto.dest, [label %lab0, label %end] |
| } |
| |
| define i32 @main() nounwind readnone { |
| entry: |
| ret i32 0 |
| } |