[llvm-testresults] buildbot failure in lab.llvm.org on clang-x86_64-darwin11-Rlto

[llvmlab-buildmaster at lab.llvm.org]

The Buildbot has detected a failed build on builder clang-x86_64-darwin11-Rlto while building lab.llvm.org.
Full details are available at:
 http://lab.llvm.org:8013/builders/clang-x86_64-darwin11-Rlto/builds/554

Buildbot URL: http://lab.llvm.org:8013/

Buildslave for this Build: xserve3

Build Reason: Triggerable(phase3-stage0)
Build Source Stamp: 186726
Blamelist: 

BUILD FAILED: failed make

sincerely,
 -The Buildbot


================================================================================

CHANGES:


LOGS:
Last 15 lines of 'stdio':
	clang: error: unable to execute command: Illegal instruction: 4
	clang: error: linker command failed due to signal (use -v to see invocation)
	make[2]: *** [/Users/buildslave/zorg/buildbot/smooshlab/slave-0.8/build.clang-x86_64-darwin11-Rlto/clang-build/Release/bin/llc] Error 254
	make[1]: *** [llc/.makeall] Error 2
	make[1]: *** Waiting for unfinished jobs....
	Assertion failed: (isa<X>(Val) && "cast<Ty>() argument of incompatible type!"), function cast, file /Users/buildslave/zorg/buildbot/smooshlab/slave-0.8/build.clang-x86_64-darwin11-RA/llvm/include/llvm/Support/Casting.h, line 239.
	Stack dump:
	0.	Running pass 'Global Variable Optimizer' on module 'ld-temp.o'.
	clang: error: unable to execute command: Illegal instruction: 4
	clang: error: linker command failed due to signal (use -v to see invocation)
	make[2]: *** [/Users/buildslave/zorg/buildbot/smooshlab/slave-0.8/build.clang-x86_64-darwin11-Rlto/clang-build/Release/bin/opt] Error 254
	make[1]: *** [opt/.makeall] Error 2
	llvm[2]: ======= Finished Linking Release Executable llvm-nm
	llvm[2]: ======= Finished Linking Release Executable llvm-prof
	make: *** [all] Error 1