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[LTO] Handle Task=-1 passed to addSaveTemps

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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
This commit is contained in:
Teresa Johnson 2018-05-05 14:37:20 +00:00
parent bf53c91505
commit 81cbc49784
1 changed files with 5 additions and 3 deletions
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8
lib/LTO/LTOBackend.cpp
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@ -76,10 +76,12 @@ Error Config::addSaveTemps(std::string OutputFileName,
// user hasn't requested using the input module's path, emit to a file
// named from the provided OutputFileName with the Task ID appended.
if (M.getModuleIdentifier() == "ld-temp.o" || !UseInputModulePath) {
PathPrefix = OutputFileName + utostr(Task);
PathPrefix = OutputFileName;
if (Task != (unsigned)-1)
PathPrefix += utostr(Task) + ".";
} else
PathPrefix = M.getModuleIdentifier();
std::string Path = PathPrefix + "." + PathSuffix + ".bc";
PathPrefix = M.getModuleIdentifier() + ".";
std::string Path = PathPrefix + PathSuffix + ".bc";
std::error_code EC;
raw_fd_ostream OS(Path, EC, sys::fs::OpenFlags::F_None);
// Because -save-temps is a debugging feature, we report the error