[llvm-testresults] buildbot failure in smooshlab on clang-x86_64-darwin10-selfhost-rel

[Douglas Gregor]

Bill, I think this is yours...

	- Doug

On Mar 4, 2010, at 4:43 PM, daniel_dunbar at apple.com wrote:

> The Buildbot has detected a new failure of clang-x86_64-darwin10-selfhost-rel on smooshlab.
> Full details are available at:
> http://smooshlab.apple.com:8010/builders/clang-x86_64-darwin10-selfhost-rel/builds/163
> 
> Buildbot URL: http://smooshlab.apple.com:8010/
> 
> Buildslave for this Build: smoosh-02
> 
> Build Reason: 
> Build Source Stamp: 97767
> Blamelist: dgregor,void
> 
> BUILD FAILED: failed compile.llvm.stage2
> 
> sincerely,
> -The Buildbot
> 
> 
> ================================================================================
> 
> CHANGES:
> Files:
> lib/Target/X86/X86InstrInfo.cpp
> test/CodeGen/X86/jump-opt.ll
> test/FrontendC/2008-07-29-EHLabel.ll
> At: Thu 04 Mar 2010 16:28:57
> Changed By: void
> Comments: Micro-optimization:
> 
> This code:
> 
> float floatingPointComparison(float x, float y) {
>    double product = (double)x * y;
>    if (product == 0.0)
>        return product;
>    return product - 1.0;
> }
> 
> produces this:
> 
> _floatingPointComparison:
> 0000000000000000        cvtss2sd        %xmm1,%xmm1
> 0000000000000004        cvtss2sd        %xmm0,%xmm0
> 0000000000000008        mulsd           %xmm1,%xmm0
> 000000000000000c        pxor            %xmm1,%xmm1
> 0000000000000010        ucomisd         %xmm1,%xmm0
> 0000000000000014        jne             0x00000004
> 0000000000000016        jp              0x00000002
> 0000000000000018        jmp             0x00000008
> 000000000000001a        addsd           0x00000006(%rip),%xmm0
> 0000000000000022        cvtsd2ss        %xmm0,%xmm0
> 0000000000000026        ret
> 
> The "jne/jp/jmp" sequence can be reduced to this instead:
> 
> _floatingPointComparison:
> 0000000000000000        cvtss2sd        %xmm1,%xmm1
> 0000000000000004        cvtss2sd        %xmm0,%xmm0
> 0000000000000008        mulsd           %xmm1,%xmm0
> 000000000000000c        pxor            %xmm1,%xmm1
> 0000000000000010        ucomisd         %xmm1,%xmm0
> 0000000000000014        jp              0x00000002
> 0000000000000016        je              0x00000008
> 0000000000000018        addsd           0x00000006(%rip),%xmm0
> 0000000000000020        cvtsd2ss        %xmm0,%xmm0
> 0000000000000024        ret
> 
> for a savings of 2 bytes.
> 
> This xform can happen when we recognize that jne and jp jump to the same "true"
> MBB, the unconditional jump would jump to the "false" MBB, and the "true" branch
> is the fall-through MBB.
> Properties: 
> 
> 
> 
> 
> Files:
> include/clang/AST/DeclBase.h
> lib/AST/DeclBase.cpp
> At: Thu 04 Mar 2010 16:28:57
> Changed By: dgregor
> Comments: When we invalidate a declaration, make it public, so that it doesn't
> trigger access control or one of the many assertions we have for valid
> access specifiers.
> Properties: 
> 
> 
> 
> 
> LOGS:
> Last 10 lines of 'stdio':
> 	llvm[1]: Compiling regcomp.c for Release build
> 	llvm[1]: Compiling regerror.c for Release build
> 	llvm[1]: Compiling regexec.c for Release build
> 	llvm[1]: Compiling regfree.c for Release build
> 	llvm[1]: Compiling regstrlcpy.c for Release build
> 	/var/folders/UN/UNqse73IF28xfwzSQQzX5U+++TM/-Tmp-/cc-Tdn2Hz.s:unknown:Undefined local symbol LBB26_12
> 	clang: error: assembler command failed with exit code 1 (use -v to see invocation)
> 	make[1]: *** [/Users/buildslave/zorg/buildbot/smooshlab/slave/build.clang-x86_64-darwin10-selfhost-rel/llvm.obj.2/lib/Support/Release/Timer.o] Error 1
> 	make[1]: *** Waiting for unfinished jobs....
> 	make: *** [all] Error 1
>