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| author | Johannes Doerfert <jdoerfert@anl.gov> | 2019-06-27 15:51:40 +0000 |
|---|---|---|
| committer | Johannes Doerfert <jdoerfert@anl.gov> | 2019-06-27 15:51:40 +0000 |
| commit | 3b77583e95236761d8741fd6df375975a8ca5d83 (patch) | |
| tree | 62368c6f8dec79ee75d295c2d39c31d41a9646e8 /llvm/test/Bitcode | |
| parent | 7d8274d54d0305b827e87adae4619abd6433043c (diff) | |
| download | bcm5719-llvm-3b77583e95236761d8741fd6df375975a8ca5d83.tar.gz bcm5719-llvm-3b77583e95236761d8741fd6df375975a8ca5d83.zip | |
[Attr] Add "willreturn" function attribute
This patch introduces a new function attribute, willreturn, to indicate
that a call of this function will either exhibit undefined behavior or
comes back and continues execution at a point in the existing call stack
that includes the current invocation.
This attribute guarantees that the function does not have any endless
loops, endless recursion, or terminating functions like abort or exit.
Patch by Hideto Ueno (@uenoku)
Reviewers: jdoerfert
Subscribers: mehdi_amini, hiraditya, steven_wu, dexonsmith, lebedev.ri, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D62801
llvm-svn: 364555
Diffstat (limited to 'llvm/test/Bitcode')
| -rw-r--r-- | llvm/test/Bitcode/attributes.ll | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/llvm/test/Bitcode/attributes.ll b/llvm/test/Bitcode/attributes.ll index 6f149c0d3bf..3aac9ee64ce 100644 --- a/llvm/test/Bitcode/attributes.ll +++ b/llvm/test/Bitcode/attributes.ll @@ -204,7 +204,7 @@ define void @f34() ; CHECK: define void @f34() { call void @nobuiltin() nobuiltin -; CHECK: call void @nobuiltin() #36 +; CHECK: call void @nobuiltin() #37 ret void; } @@ -351,6 +351,12 @@ define void @f59() shadowcallstack ret void } +; CHECK: define void @f60() #36 +define void @f60() willreturn +{ + ret void +} + ; CHECK: attributes #0 = { noreturn } ; CHECK: attributes #1 = { nounwind } ; CHECK: attributes #2 = { readnone } @@ -387,4 +393,5 @@ define void @f59() shadowcallstack ; CHECK: attributes #33 = { speculatable } ; CHECK: attributes #34 = { sanitize_hwaddress } ; CHECK: attributes #35 = { shadowcallstack } -; CHECK: attributes #36 = { nobuiltin } +; CHECK: attributes #36 = { willreturn } +; CHECK: attributes #37 = { nobuiltin } |
