[LLVMbugs] [Bug 5569] New: Bug with IPSCCP and blockaddress (assertion)
bugzilla-daemon at cs.uiuc.edu
bugzilla-daemon at cs.uiuc.edu
Fri Nov 20 07:15:44 PST 2009
http://llvm.org/bugs/show_bug.cgi?id=5569
Summary: Bug with IPSCCP and blockaddress (assertion)
Product: new-bugs
Version: trunk
Platform: PC
OS/Version: Linux
Status: NEW
Keywords: compile-fail
Severity: normal
Priority: P2
Component: new bugs
AssignedTo: unassignedbugs at nondot.org
ReportedBy: quickslyver at free.fr
CC: llvmbugs at cs.uiuc.edu
Created an attachment (id=3842)
--> (http://llvm.org/bugs/attachment.cgi?id=3842)
testcase (llvm assembler)
The following command from a gcc torture testcase compiled with clang at -O3
crash during ipsccp after internalize:
$llvm-as test.ll -o - | opt -internalize -ipsccp -o - | llvm-dis -o -
opt: llvm/include/llvm/Support/Casting.h:199: typename llvm::cast_retty<To,
From>::ret_type llvm::cast(const Y&) [with X = llvm::Instruction, Y =
llvm::User*]: Assertion `isa<X>(Val) && "cast<Ty>() argument of incompatible
type!"' failed.
[...]
Stack dump:
0. Running pass 'Interprocedural Sparse Conditional Constant Propagation'
on module '<stdin>'.
****The testcase: (also in attachement)
; ModuleID = '<stdin>'
target datalayout =
"e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32"
target triple = "i386-pc-linux-gnu"
@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]
volatile store 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* %pc, i32 %indvar ; <i32*> [#uses=1]
%tmp1.pn = load i32* %pc.addr.0 ; <i32> [#uses=1]
%indirect.goto.dest.in = getelementptr inbounds [2 x i8*]* @bar.l, i32 0, i32
%tmp1.pn ; <i8**> [#uses=1]
%indirect.goto.dest = load 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
}
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