[LLVMbugs] [Bug 1629] New: lli with -force-interpreter will cause assertion when having static class object in function

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=1629

           Summary: lli with -force-interpreter will cause assertion when
                    having static class object in function
           Product: libraries
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Interpreter
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: zhousheng00 at gmail.com
                CC: zhousheng00 at gmail.com, llvmbugs at cs.uiuc.edu


The following piece of code causes lli to crash when -force-interpreter is
set.For Jit, it's okay.

class X { 
  unsigned v;
public:
  X(int val) : v(val) {}
};

int main() {
  static X a(0);
  return 0;
}

Assertion info:
lli: /developer/home2/zsth/projects/commit/llvm/lib/Support/APInt.cpp:101:
llvm::APInt::APInt(const llvm::APInt&): Assertion `BitWidth <=
IntegerType::MAX_INT_BITS && "bitwidth too large"' failed.

The .ll file :
; 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"
target triple = "i686-pc-linux-gnu"
        %struct.X = type { i32 }
@_ZGVZ4mainE1a = internal global i64 0, align 8         ; <i64*> [#uses=3]

define i32 @main() {
entry:
        %tmp2 = load i8* bitcast (i64* @_ZGVZ4mainE1a to i8*), align 8         
; <i8> [#uses=1]
        %tmp3 = icmp eq i8 %tmp2, 0             ; <i1> [#uses=1]
        br i1 %tmp3, label %cond_true, label %UnifiedReturnBlock

cond_true:              ; preds = %entry
        %tmp5 = tail call i32 @__cxa_guard_acquire( i64* @_ZGVZ4mainE1a )      
        ; <i32> [#uses=1]
        %tmp6 = icmp eq i32 %tmp5, 0            ; <i1> [#uses=1]
        br i1 %tmp6, label %UnifiedReturnBlock, label %cond_true10

cond_true10:            ; preds = %cond_true
        tail call void @__cxa_guard_release( i64* @_ZGVZ4mainE1a )
        ret i32 0

UnifiedReturnBlock:             ; preds = %cond_true, %entry
        ret i32 0
}

declare i32 @__cxa_guard_acquire(i64*)

declare void @__cxa_guard_release(i64*)


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