[LLVMbugs] [Bug 15353] New: clang -m32 -O fails with long long function argument with message "Call result #3 has unhandled type i32"

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Mon Feb 25 12:19:24 PST 2013


http://llvm.org/bugs/show_bug.cgi?id=15353

            Bug ID: 15353
           Summary: clang -m32 -O fails with long long function argument
                    with message "Call result #3 has unhandled type i32"
           Product: clang
           Version: 3.2
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
          Assignee: unassignedclangbugs at nondot.org
          Reporter: jayzel at synopsys.com
                CC: dgregor at apple.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 10075
  --> http://llvm.org/bugs/attachment.cgi?id=10075&action=edit
Here is the results of trying to compile the program

On x86 32 bit architecture with C or C++ program clang fails to compile a
program with a long long argument passed to a function following a for
statement
to set the long long.

This works in 64 bit mode.  The problem is only when using optimization levels
from -O to -O3.  Without optimization or with -O4 the program compiles
successfully.
The program can be compiled with
clang -m32 -c -O clangfail.c
It will also fail with
clang++ -m32 -c -O clangfail.c

Following is the C file that causes the problem:
/*-----------------------------------------*/
void myfprintf(long long);
void integer_work(long count)
{
  long long i;
  long long result = 0;
  for (i=1; i <= count; i++) {
        result+=i;
 }
  myfprintf(result);
}

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