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| author | Peter Collingbourne <peter@pcc.me.uk> | 2018-07-24 19:34:37 +0000 |
|---|---|---|
| committer | Peter Collingbourne <peter@pcc.me.uk> | 2018-07-24 19:34:37 +0000 |
| commit | 5df3f9e0708ca0f36e3e879801a9a51ec95278b1 (patch) | |
| tree | f48abcfbd8e09d0211a6caf495dbb37714531a37 /lib/CodeGen/TargetLoweringBase.cpp | |
| parent | f48b4d01aaa614b1553bf1489b4f276ed46ea224 (diff) | |
Put "built-in" function definitions in global Used list, for LTO. (fix bug 34169)
When building with LTO, builtin functions that are defined but whose calls have not been inserted yet, get internalized. The Global Dead Code Elimination phase in the new LTO implementation then removes these function definitions. Later optimizations add calls to those functions, and the linker then dies complaining that there are no definitions. This CL fixes the new LTO implementation to check if a function is builtin, and if so, to not internalize (and later DCE) the function. As part of this fix I needed to move the RuntimeLibcalls.{def,h} files from the CodeGen subidrectory to the IR subdirectory. I have updated all the files that accessed those two files to access their new location.
Fixes PR34169
Patch by Caroline Tice!
Differential Revision: https://reviews.llvm.org/D49434
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337847 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/TargetLoweringBase.cpp')
| -rw-r--r-- | lib/CodeGen/TargetLoweringBase.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/CodeGen/TargetLoweringBase.cpp b/lib/CodeGen/TargetLoweringBase.cpp index 96e03388d5c..43f4bad595e 100644 --- a/lib/CodeGen/TargetLoweringBase.cpp +++ b/lib/CodeGen/TargetLoweringBase.cpp @@ -118,7 +118,7 @@ static cl::opt<int> MinPercentageForPredictableBranch( void TargetLoweringBase::InitLibcalls(const Triple &TT) { #define HANDLE_LIBCALL(code, name) \ setLibcallName(RTLIB::code, name); -#include "llvm/CodeGen/RuntimeLibcalls.def" +#include "llvm/IR/RuntimeLibcalls.def" #undef HANDLE_LIBCALL // Initialize calling conventions to their default. for (int LC = 0; LC < RTLIB::UNKNOWN_LIBCALL; ++LC) |