[llvm-commits] [llvm] r134018 - in /llvm/trunk: lib/Target/X86/X86FastISel.cpp lib/Target/X86/X86FloatingPoint.cpp lib/Target/X86/X86ISelLowering.cpp lib/Target/X86/X86InstrFPStack.td lib/Target/X86/X86RegisterInfo.cpp lib/Target/X86/X86RegisterInfo.td test/CodeGen/X86/inline-asm-fpstack.ll

[Jakob Stoklund Olesen]

On Jul 1, 2011, at 1:53 PM, Chad Rosier wrote:

> 
> On Jul 1, 2011, at 11:34 AM, Jakob Stoklund Olesen wrote:
> 
>> 
>> On Jun 30, 2011, at 1:33 PM, Chad Rosier wrote:
>> 
>>> Hi Jakob,
>>> I'm seeing a failure for one of the clang llvm-gcc tests.  Bisect brought me to this revision, which seems very relevant.
>>> gcc.target/i386/pr30848.c (test for excess errors)
>>> mcrosier$ /Users/mcrosier/llvm-clean/install/bin/clang /Users/mcrosier/gcc-4_2-testsuite/src/gcc.target/i386/pr30848.c    -ansi -pedantic-errors -fno-show-column -S  -o pr30848.s
>>> fatal error: error in backend: Inline asm fixed outputs must be last on the x87 stack
>> 
>> Clang is failing correctly, but I fixed the message thusly:
>> 
>> clang -c /d/g/clang-tests/gcc-4_2-testsuite/src/gcc.target/i386/pr30848.c 
>> fatal error: error in backend: Inline asm output regs must be last on the x87 stack
>> 
>> However, DejaGNU is still failing the test:
>> 
>> $ cat src/gcc.target/i386/pr30848.c 
>> /* { dg-do compile } */
>> 
>> void foo(double d)
>> {
>>   __asm__ ("" : "=u" (d));  /* { dg-error "output regs" } */
>> }
>> 
>> Anyone know how to fix the test suite?
>> 
> 
> I tried a few different regular expressions that I expected would work, but it still failed miserably?  Hopefully, someone with more DejaGNU experience can speak up.
> 
>  Chad
> 
>> Here is gcc-4.2:
>> 
>> $ gcc-4.2 -c /d/g/clang-tests/gcc-4_2-testsuite/src/gcc.target/i386/pr30848.c 
>> /d/g/clang-tests/gcc-4_2-testsuite/src/gcc.target/i386/pr30848.c: In function ‘foo’:
>> /d/g/clang-tests/gcc-4_2-testsuite/src/gcc.target/i386/pr30848.c:5: error: output regs must be grouped at top of stack

Perhaps the problem is that clang doesn't print a line number. We can't currently do that.

/jakob

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