llvm dev - Nov 2013 - [LLVMdev] new dragonegg 3.4 warning on darwin12

Duncan,
   Is this expected for x86_64-apple-darwin12 under Xcode 5? Using current
llvm/compiler-rt/clang/polly/testsuite with dragonegg 3.4 branch, I see
the warnings...

% /sw/lib/gcc4.8/bin/gcc-4 -fplugin=/sw/lib/gcc4.8/lib/dragonegg.so
-specs=/sw/lib/gcc4.8/lib/integrated-as.specs
-fplugin-arg-dragonegg-enable-gcc-optzns  -Ofast himenoBMTxpa.c
himenoBMTxpa.c: In function ‘main’:
himenoBMTxpa.c:79:5: warning: incompatible implicit declaration of built-in
function ‘strcpy’ [enabled by default]
     strcpy(size,argv[1]);
     ^
himenoBMTxpa.c: In function ‘set_param’:
himenoBMTxpa.c:226:5: warning: incompatible implicit declaration of built-in
function ‘exit’ [enabled by default]
     exit(6);
     ^
himenoBMTxpa.c: In function ‘newMat’:
himenoBMTxpa.c:239:5: warning: incompatible implicit declaration of built-in
function ‘malloc’ [enabled by default]
     malloc(mnums * mrows * mcols * mdeps * sizeof(float));
     ^
himenoBMTxpa.c: In function ‘clearMat’:
himenoBMTxpa.c:248:5: warning: incompatible implicit declaration of built-in
function ‘free’ [enabled by default]
     free(Mat->m);
     ^
'-cmpxchg16b' is not a recognized feature for this target (ignoring
feature)
'-cmpxchg16b' is not a recognized feature for this target (ignoring
feature)
'-cmpxchg16b' is not a recognized feature for this target (ignoring
feature)

Are these warnings for...

'-cmpxchg16b' is not a recognized feature for this target (ignoring
feature)

expected? The resulting executable runs fine but I don't recall seeing this
warning before.
           Jack

On Thu, Nov 21, 2013 at 07:37:46PM -0500, Jack Howarth
wrote:
> Duncan,
>    Is this expected for x86_64-apple-darwin12 under Xcode 5? Using current
> llvm/compiler-rt/clang/polly/testsuite with dragonegg 3.4 branch, I see
> the warnings...
> 
> % /sw/lib/gcc4.8/bin/gcc-4 -fplugin=/sw/lib/gcc4.8/lib/dragonegg.so
-specs=/sw/lib/gcc4.8/lib/integrated-as.specs
-fplugin-arg-dragonegg-enable-gcc-optzns  -Ofast himenoBMTxpa.c
> himenoBMTxpa.c: In function ‘main’:
> himenoBMTxpa.c:79:5: warning: incompatible implicit declaration of built-in
function ‘strcpy’ [enabled by default]
>      strcpy(size,argv[1]);
>      ^
> himenoBMTxpa.c: In function ‘set_param’:
> himenoBMTxpa.c:226:5: warning: incompatible implicit declaration of
built-in function ‘exit’ [enabled by default]
>      exit(6);
>      ^
> himenoBMTxpa.c: In function ‘newMat’:
> himenoBMTxpa.c:239:5: warning: incompatible implicit declaration of
built-in function ‘malloc’ [enabled by default]
>      malloc(mnums * mrows * mcols * mdeps * sizeof(float));
>      ^
> himenoBMTxpa.c: In function ‘clearMat’:
> himenoBMTxpa.c:248:5: warning: incompatible implicit declaration of
built-in function ‘free’ [enabled by default]
>      free(Mat->m);
>      ^
> '-cmpxchg16b' is not a recognized feature for this target (ignoring
feature)
> '-cmpxchg16b' is not a recognized feature for this target (ignoring
feature)
> '-cmpxchg16b' is not a recognized feature for this target (ignoring
feature)
> 
> Are these warnings for...
> 
> '-cmpxchg16b' is not a recognized feature for this target (ignoring
feature)
> 
> expected? The resulting executable runs fine but I don't recall seeing
this warning before.
The cmpxchg16b feature was renamed to cx16 in LLVM.  I've made the
corresponding change to DragonEgg in r195404.

Thanks,
-- 
Peter

On Thu, Nov 21, 2013 at 05:53:46PM -0800, Peter Collingbourne
wrote:
> On Thu, Nov 21, 2013 at 07:37:46PM -0500, Jack Howarth wrote:
> > Duncan,
> >    Is this expected for x86_64-apple-darwin12 under Xcode 5? Using
current
> > llvm/compiler-rt/clang/polly/testsuite with dragonegg 3.4 branch, I
see
> > the warnings...
> > 
> > % /sw/lib/gcc4.8/bin/gcc-4 -fplugin=/sw/lib/gcc4.8/lib/dragonegg.so
-specs=/sw/lib/gcc4.8/lib/integrated-as.specs
-fplugin-arg-dragonegg-enable-gcc-optzns  -Ofast himenoBMTxpa.c
> > himenoBMTxpa.c: In function ‘main’:
> > himenoBMTxpa.c:79:5: warning: incompatible implicit declaration of
built-in function ‘strcpy’ [enabled by default]
> >      strcpy(size,argv[1]);
> >      ^
> > himenoBMTxpa.c: In function ‘set_param’:
> > himenoBMTxpa.c:226:5: warning: incompatible implicit declaration of
built-in function ‘exit’ [enabled by default]
> >      exit(6);
> >      ^
> > himenoBMTxpa.c: In function ‘newMat’:
> > himenoBMTxpa.c:239:5: warning: incompatible implicit declaration of
built-in function ‘malloc’ [enabled by default]
> >      malloc(mnums * mrows * mcols * mdeps * sizeof(float));
> >      ^
> > himenoBMTxpa.c: In function ‘clearMat’:
> > himenoBMTxpa.c:248:5: warning: incompatible implicit declaration of
built-in function ‘free’ [enabled by default]
> >      free(Mat->m);
> >      ^
> > '-cmpxchg16b' is not a recognized feature for this target
(ignoring feature)
> > '-cmpxchg16b' is not a recognized feature for this target
(ignoring feature)
> > '-cmpxchg16b' is not a recognized feature for this target
(ignoring feature)
> > 
> > Are these warnings for...
> > 
> > '-cmpxchg16b' is not a recognized feature for this target
(ignoring feature)
> > 
> > expected? The resulting executable runs fine but I don't recall
seeing this warning before.
> 
> The cmpxchg16b feature was renamed to cx16 in LLVM.  I've made the
> corresponding change to DragonEgg in r195404.
Peter,
  Please don't forget to also apply this change to the dragonegg 3.4 release
branch as well.
Thanks in advance.
       Jack
> 
> Thanks,
> -- 
> Peter