[LTO] Handle Task=-1 passed to addSaveTemps
Summary:
This change is necessary for D46464, which will pass -1 as the Task
ID for distributed backends, so that the save temps files don't end
up with "4294967295" in their path. For distributed back ends, when -1
is passed, don't append any Task ID.
An existing test (tools/clang/test/CodeGen/thinlto_backend.ll) will
fail without this change after D46464.
Reviewers: pcc
Subscribers: mehdi_amini, inglorion, llvm-commits
Differential Revision: https://reviews.llvm.org/D46488
llvm-svn: 331591
1 file changed