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