[ThinLTO]Allow setting of maximum cache size with 64-bit number

Also added a C-interface function for large values, and updated
llvm-lto's --thinlto-cache-max-size-bytes switch to take a type larger
than int.

The maximum cache size in terms of bytes is a 64-bit number. However,
the methods to set it only took unsigned previously, which meant that
the maximum cache size could not be specified above 4GB. That's quite
small compared to the output of some projects, so it makes sense to
provide the ability to set larger values in that field.

We also needed a C-interface function that provides a greater range
than the existing thinlto_codegen_set_cache_size_bytes, which also only
takes an unsigned, so this change also adds
hinlto_codegen_set_cache_size_megabytes.

Reviewed by: mehdi_amini, tejohnson, steven_wu

Differential Revision: https://reviews.llvm.org/D52023

llvm-svn: 342233

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/tools/llvm-lto/llvm-lto.cpp b/llvm/tools/llvm-lto/llvm-lto.cpp
index 75668a9dd8b..25f086fdac9 100644
--- a/llvm/tools/llvm-lto/llvm-lto.cpp
+++ b/llvm/tools/llvm-lto/llvm-lto.cpp
@@ -158,7 +158,7 @@ static cl::opt<int>
     ThinLTOCachePruningInterval("thinlto-cache-pruning-interval",
     cl::init(1200), cl::desc("Set ThinLTO cache pruning interval."));
 
-static cl::opt<int>
+static cl::opt<unsigned long long>
     ThinLTOCacheMaxSizeBytes("thinlto-cache-max-size-bytes",
     cl::desc("Set ThinLTO cache pruning directory maximum size in bytes."));