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author | Pablo Barrio <pablo.barrio@arm.com> | 2017-12-04 16:55:49 +0000 |
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committer | Pablo Barrio <pablo.barrio@arm.com> | 2017-12-04 16:55:49 +0000 |
commit | 93356784e0e357e3f1f74d565480cc9c25ea4bc9 (patch) | |
tree | cf9bae09ce0e9c8c265005c595bd3675310a9c30 /test/CodeGen/AArch64/bics.ll | |
parent | 3f2a29c060fb22c270cbfb4f6ad62b614d59ed13 (diff) |
Fix function pointer tail calls in armv8-M.base
Summary:
The compiler fails with the following error message:
fatal error: error in backend: ran out of registers during
register allocation
Tail call optimization for Armv8-M.base fails to meet all the required
constraints when handling calls to function pointers where the
arguments take up r0-r3. This is because the pointer to the
function to be called can only be stored in r0-r3, but these are
all occupied by arguments. This patch makes sure that tail call
optimization does not try to handle this type of calls.
Reviewers: chill, MatzeB, olista01, rengolin, efriedma
Reviewed By: olista01, efriedma
Subscribers: efriedma, aemerson, javed.absar, llvm-commits, kristof.beyls
Differential Revision: https://reviews.llvm.org/D40706
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@319664 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/AArch64/bics.ll')
0 files changed, 0 insertions, 0 deletions