[LLVMbugs] [Bug 1805] New: llvm-g++ emits trees for computed labels too late

bugzilla-daemon at cs.uiuc.edu bugzilla-daemon at cs.uiuc.edu
Fri Nov 16 09:18:28 PST 2007


           Summary: llvm-g++ emits trees for computed labels too late
           Product: tools
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: llvm-g++
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: asl at math.spbu.ru
                CC: llvmbugs at cs.uiuc.edu

Consider the following easy testcase:

int baz(void*);

int foo() {
 static void* bar[] = { &&bb1, &&bb2, &&bb3 };
 switch (baz(bar)) {
 case 1:
   goto bb1;
 case 2:
   goto bb2;
   goto bb3;
 bb1: return 1;
 bb2: return 2;
 bb3: return 3;

It works with both llvm-g++ and llvm-gcc for 4.0, works for llvm-gcc 4.2, but
not for llvm-g++ 4.2 :( Looks like some sort of "regression".

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