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* Generate objc intrinsics instead of runtime calls as the ARC optimizer now ↵Pete Cooper2018-12-181-2/+2
| | | | | | | | | works only on intrinsics Differential Revision: https://reviews.llvm.org/D55802 Reviewers: rjmccall llvm-svn: 349535
* [ObjC] Use consistent comment style in inline asmOliver Stannard2017-08-211-1/+1
| | | | | | | | | The comment markers accepted by the assembler vary between different targets, but '//' is always accepted, so we should use that for consistency. Differential revision: https://reviews.llvm.org/D36666 llvm-svn: 311325
* ARM64: initial clang support commit.Tim Northover2014-03-291-7/+10
| | | | | | | | | | | This adds Clang support for the ARM64 backend. There are definitely still some rough edges, so please bring up any issues you see with this patch. As with the LLVM commit though, we think it'll be more useful for merging with AArch64 from within the tree. llvm-svn: 205100
* Use the actual ABI-determined C calling convention for runtimeJohn McCall2013-02-281-2/+2
| | | | | | | | | | | | | | | | | | | | | | calls and declarations. LLVM has a default CC determined by the target triple. This is not always the actual default CC for the ABI we've been asked to target, and so we sometimes find ourselves annotating all user functions with an explicit calling convention. Since these calling conventions usually agree for the simple set of argument types passed to most runtime functions, using the LLVM-default CC in principle has no effect. However, the LLVM optimizer goes into histrionics if it sees this kind of formal CC mismatch, since it has no concept of CC compatibility. Therefore, if this module happens to define the "runtime" function, or got LTO'ed with such a definition, we can miscompile; so it's quite important to get this right. Defining runtime functions locally is quite common in embedded applications. llvm-svn: 176286
* At -O0, prefer objc_storeStrong with a null new value to theJohn McCall2012-10-171-2/+1
| | | | | | | | | | | combination of a load+objc_release; this is generally better for tools that try to track why values are retained and released. Also use objc_storeStrong when copying a block (again, only at -O0), which requires us to do a preliminary store of null in order to compensate for objc_storeStrong's assign semantics. llvm-svn: 166085
* In ARC, if we're emitting assembly markers for calls toJohn McCall2012-09-071-0/+17
| | | | | | | | | objc_retainAutoreleasedReturnValue, we need to also be killing them during return peepholing. Make sure we recognize an intervening bitcast, but more importantly, assert if we can't find the asm marker at all. rdar://problem/12133032 llvm-svn: 163431
* Make -fobjc-nonfragile-abi the -cc1 default, since it's theJohn McCall2011-10-021-1/+1
| | | | | | | | | | | | | | | | | | | increasingly prevailing case to the point that new features like ARC don't even support the fragile ABI anymore. This required a little bit of reshuffling with exceptions because a check was assuming that ObjCNonFragileABI was only being set in ObjC mode, and that's actually a bit obnoxious to do. Most, though, it involved a perl script to translate a ton of test cases. Mostly no functionality change for driver users, although there are corner cases with disabling language-specific exceptions that we should handle more correctly now. llvm-svn: 140957
* Automatic Reference Counting.John McCall2011-06-151-0/+20
Language-design credit goes to a lot of people, but I particularly want to single out Blaine Garst and Patrick Beard for their contributions. Compiler implementation credit goes to Argyrios, Doug, Fariborz, and myself, in no particular order. llvm-svn: 133103
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