clang does not know FP registers gcc does

[llvmbot]

Bugzilla Link	10299
Resolution	FIXED
Resolved on	Jul 07, 2011 17:57
Version	trunk
OS	Linux
Attachments	Test Case llvm/llvm-project#373 (fpcr), Test Case llvm/llvm-project#374 (fpsr and fpcr)
Reporter	LLVM Bugzilla Contributor
CC	@asl,@echristo

Extended Description

In RTEMS, we use some inline assembly to assist in FPU context switches. clang has trouble with the two attached test cases. I think we use two registers clang does not know about yet. This can likely be reduced but I thought it better to stick with two real examples so when this is addressed, it is more likely to let this code in RTEMS compile.

[llvmbot]

assigned to @echristo

[echristo]

Thanks Joel!

[echristo]

Fixed thusly:

[yendi:Data/sources/llvm] echristo% git svn dcommit
Committing to https://llvm.org/svn/llvm-project/llvm/trunk ...
M lib/Target/X86/X86MCAsmInfo.cpp
Committed r134653
M lib/Target/X86/X86MCAsmInfo.cpp
r134653 = 675819a2a75c0e4669f45bce42b0c2ad23da5d4c (refs/remotes/origin/master)

and

for clang:
M lib/Basic/Targets.cpp
r134654 = bb851ee5ad7e4ab99d0d68ca8c3809d7f01410c6 (refs/remotes/origin/master)