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llvm-project/clang/test/CodeGenObjC/deadcode_strip_used_var.m

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Restructure how the driver communicates information about the target Objective-C runtime down to the frontend: break this down into a single target runtime kind and version, and compute all the relevant information from that. This makes it relatively painless to add support for new runtimes to the compiler. Make the new -cc1 flag, -fobjc-runtime=blah-x.y.z, available at the driver level as a better and more general alternative to -fgnu-runtime and -fnext-runtime. This new concept of an Objective-C runtime also encompasses what we were previously separating out as the "Objective-C ABI", so fragile vs. non-fragile runtimes are now really modelled as different kinds of runtime, paving the way for better overall differentiation. As a sort of special case, continue to accept the -cc1 flag -fobjc-runtime-has-weak, as a sop to PLCompatibilityWeak. I won't go so far as to say "no functionality change", even ignoring the new driver flag, but subtle changes in driver semantics are almost certainly not intended. llvm-svn: 158793
2012-06-20 06:18:46 +00:00
// RUN: %clang_cc1 %s -emit-llvm -o %t -triple i386-apple-darwin10 -fobjc-runtime=macosx-fragile-10.5
Eliminate &&s in tests. - 'for i in $(find . -type f); do sed -e 's#\(RUN:.*[^ ]\) *&& *$#\1#g' $i | FileUpdate $i; done', for the curious. llvm-svn: 86430
2009-11-08 01:45:36 +00:00
// RUN: grep "llvm.used" %t | count 1
Restructure how the driver communicates information about the target Objective-C runtime down to the frontend: break this down into a single target runtime kind and version, and compute all the relevant information from that. This makes it relatively painless to add support for new runtimes to the compiler. Make the new -cc1 flag, -fobjc-runtime=blah-x.y.z, available at the driver level as a better and more general alternative to -fgnu-runtime and -fnext-runtime. This new concept of an Objective-C runtime also encompasses what we were previously separating out as the "Objective-C ABI", so fragile vs. non-fragile runtimes are now really modelled as different kinds of runtime, paving the way for better overall differentiation. As a sort of special case, continue to accept the -cc1 flag -fobjc-runtime-has-weak, as a sop to PLCompatibilityWeak. I won't go so far as to say "no functionality change", even ignoring the new driver flag, but subtle changes in driver semantics are almost certainly not intended. llvm-svn: 158793
2012-06-20 06:18:46 +00:00
// RUN: %clang_cc1 %s -emit-llvm -o %t -triple x86_64-apple-darwin10 -fobjc-runtime=macosx-fragile-10.5
Patch fixes an obscure bug when 'used' attribute is applied to variables in ObjC's Next runtime mode. Next runtime also implicitly applies 'used' attribute on some of its meta-data. This results in two 'llvm.used' arrays to be generated, and one of them is renamed to 'llvm.used1'. llvm-svn: 74008
2009-06-23 21:47:46 +00:00
// RUN: grep "llvm.used" %t | count 1
__attribute__((used)) static int XXXXXX __attribute__ ((section ("__DATA,__Xinterpose"))) ;
__attribute__((used)) static int YYYY __attribute__ ((section ("__DATA,__Xinterpose"))) ;
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