diff options
| author | Vedant Kumar <vsk@apple.com> | 2019-04-02 17:42:38 +0000 |
|---|---|---|
| committer | Vedant Kumar <vsk@apple.com> | 2019-04-02 17:42:38 +0000 |
| commit | 37b0f9ad9531d5c42c9bcbf0f59209131d5896e4 (patch) | |
| tree | f2f3ebe15685dc16fd55171c405d4a9a63225e54 /clang/lib/CodeGen/CGBuiltin.cpp | |
| parent | 9da8a68d6b54c44ef6579af2352dfecf2359431f (diff) | |
| download | bcm5719-llvm-37b0f9ad9531d5c42c9bcbf0f59209131d5896e4.tar.gz bcm5719-llvm-37b0f9ad9531d5c42c9bcbf0f59209131d5896e4.zip | |
[os_log] Mark os_log_helper `nounwind`
Allow the optimizer to remove unnecessary EH cleanups surrounding calls
to os_log_helper, to save some code size.
As a follow-up, it might be worthwhile to add a BasicNoexcept exception
spec to os_log_helper, and to then teach CGCall to emit direct calls for
callees which can't throw. This could save some compile-time.
Differential Revision: https://reviews.llvm.org/D60108
llvm-svn: 357501
Diffstat (limited to 'clang/lib/CodeGen/CGBuiltin.cpp')
| -rw-r--r-- | clang/lib/CodeGen/CGBuiltin.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp index 72a336b104e..97789218bbe 100644 --- a/clang/lib/CodeGen/CGBuiltin.cpp +++ b/clang/lib/CodeGen/CGBuiltin.cpp @@ -1138,6 +1138,7 @@ llvm::Function *CodeGenFunction::generateBuiltinOSLogHelperFunction( Fn->setVisibility(llvm::GlobalValue::HiddenVisibility); CGM.SetLLVMFunctionAttributes(GlobalDecl(), FI, Fn); CGM.SetLLVMFunctionAttributesForDefinition(nullptr, Fn); + Fn->setDoesNotThrow(); // Attach 'noinline' at -Oz. if (CGM.getCodeGenOpts().OptimizeSize == 2) |
