[LLVMbugs] [Bug 329] NEW: [llvmgcc] type names are not emitted for structure typedefs

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.cs.uiuc.edu/bugs/show_bug.cgi?id=329

           Summary: [llvmgcc] type names are not emitted for structure
                    typedefs
           Product: tools
           Version: 1.0
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: minor
          Priority: P2
         Component: llvm-gcc
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: sabre at nondot.org


The C front-end is not emitting LLVM type names for typedefs of structures. 
This is usually fine (because structs usually also have a tag), but causes us to
not emit names at all for certain structs, defined like this:

----------------------------------
typedef struct {
        double W, X, Y, Z;
} FOOTY;

void test(FOOTY* A) {}
----------------------------------

Missing the symbolic type name makes the LLVM code unreadable for some programs
like 188.ammp (and others) which have large structures defined like this.

We currently compile this testcase into:

void %test({ double, double, double, double }* %A) {
entry:
        ret void
}

Where we would like to see:

void %test(%FOOTY* %A) {
entry:
        ret void
}

-Chris



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