Bob Haarman d4f1cfbb84 LTO: don't fatal when value for cache key already exists ...

Summary:
LTO/Caching.cpp uses file rename to atomically set the value for a
cache key. On Windows, this fails when the destination file already
exists. Previously, LLVM would report_fatal_error in such
cases. However, because the old and the new value for the cache key
are supposed to be equivalent, it actually doesn't matter which one we
keep. This change makes it so that failing the rename when an openable
file with the desired name already exists causes us to report success
instead of fataling.

Reviewers: pcc, hans

Subscribers: mehdi_amini, llvm-commits, hiraditya

Differential Revision: https://reviews.llvm.org/D39874

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@317899 91177308-0d34-0410-b5e6-96231b3b80d8

2017-11-10 17:08:21 +00:00

..

Caching.cpp

LTO: don't fatal when value for cache key already exists

2017-11-10 17:08:21 +00:00

CMakeLists.txt

Support: Add a VCSRevision.h header file.

2017-04-13 01:26:12 +00:00

LLVMBuild.txt

[lib/LTO] Add a way to run a custom pipeline

2016-09-07 17:46:16 +00:00

LTO.cpp

[LTO][ThinLTO] Use the linker resolutions to mark global values as dso_local.

2017-11-04 17:04:39 +00:00

LTOBackend.cpp

[Support] Rename tool_output_file to ToolOutputFile, NFC

2017-09-23 01:03:17 +00:00

LTOCodeGenerator.cpp

Add llvm::for_each as a range-based extensions to <algorithm> and make use of it in some cases where it is a more clear alternative to std::for_each.

2017-11-03 20:01:25 +00:00

LTOModule.cpp

LTOModule::isBitcodeFile() shouldn't assert when returning false.

2017-10-31 16:39:47 +00:00

ThinLTOCodeGenerator.cpp

Move the stripping of invalid debug info from the Verifier to AutoUpgrade.

2017-10-02 18:31:29 +00:00

UpdateCompilerUsed.cpp

[Analysis] Add LibFunc_ prefix to enums in TargetLibraryInfo. (NFC)

2017-01-23 23:16:46 +00:00